1. COLABORACION PRO-AM
El Observatorio Virtual: Una infraestructura básica para la investigación astronómica
Enrique Solano
Miércoles 15 de Diciembre de 2010
Ver diapositivas presentación
Colaboraciones Profesionales - Amateurs

Detección de sistemas binarios con movimiento propio común utilizando herramientas del Observatorio Virtual.
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Coordinación: Xavier Miret (e-mail: 24503xmc at comb.cat), Tòfol Tobal, Ignacio Novalbos. Observatorio Astronómico del Garraf
Descripción: Se pretende explorar de manera sistemática y visual la totalidad del cielo con vistas a identificar nuevos pares de alto (> 50
mas/año) movimiento propio común. De manera resumida, el método a utilizar se basa en una comparación tipo "blinking" (parpadeo) entre las
imágenes de los surveys POSS1 y POSS2, cruzándolas posteriomente con los catálogos USNOB1 y NOMAD1. De manera adicional, se realiza
la astrometría relativa de los nuevos pares, midiendo separación y ángulo de posición sobre las imágenes estudiadas. El proceso de búsqueda se
realiza con la herramienta de Observatorio Virtual Aladin. Más información sobre el proyecto se puede obtener en los documentos adjuntos.
Estatus del proyecto:
 Noviembre 2012: IV Workshop OAG GWP Survey. Barcelona 2 diciembre 2012.
 Más información sobre el workshop: english español
 Mayo 2012: terminada la revisión de la zona RA:0-24h DEC:0-360º. Se han identificado 1725 nuevos sistemas múltiples que han
incorporados al Catálogo de Estrellas Dobles de Washington (WDS) con "GWP" como "discovery code".
 Abierto a colaboraciones con otros grupos de trabajo.
 Finalizado Garraf Wide Pairs Survey: junio 2015: 3000+ sistemas desconocidos catalogados. Presentación en el próximo IV International
Pro-Am Meeting, Vilanova i la Geltrú, 18-19-20 de septiembre 2015.
Documentación adicional: english español
Proyecto REDVO: Revisión de Estrellas Dobles Visuales Olvidadas
o Coordinación:
 Ignacio Novalbos, Tòfol Tobal. Observatorio Astronómico del Garraf
 Enrique Solano. Observatorio Virtual Español
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Introducción: El Observatorio Astronómico del Garraf tiene una dilatada experiencia en la catalogación de sistemas múltiples. Desde el año 2005 hasta la
fecha (abril 2012) han estudiado un total de 2298 pares procedentes de los listados preparados por B.Mason (USNO/WDS), con más de 4.500 mediciones y
la catalogación de 460 nuevos pares anónimos . Todos estos resultados se han incorporado al Catálogo de Estrellas Dobles de Washington.
Descripción: El objetivo principal es el de llevar a cabo la identificación y medición de estrellas dobles visuales con separaciones >1" para las que sólo existe
una medición histórica según consta en el Catálogo de Estrellas Dobles de Washington (WDS). A tal efecto se ha preparado una lista con las 1583 binarias de
este tipo que tienen imágenes en el proyecto de cartografiado UKIDSS (versión DR6). Utilizando herramientas de Observatorio Virtual (ALADIN) se
procederá a visualizar dichas imágenes, identificar los pares y realizar la correspondiente astrometría relativa. Con este proyecto se pretende incrementar
de manera significativa el número de observaciones de estrellas dobles visuales olvidadas ya que la metodología utilizada permite medir unos 30
pares/hora, algo impensable con otras técnicas de detección y medición.
Resultados obtenidos hasta la fecha (julio 2012):
 El aumento de resolución de UKIDSS respecte a POSS I/II es espectacular, alcanzando para pares de similar mag, los 0"70-0"80.
 Revisadas 800 neglected. Se han descubierto más de 100 anónimas (sistemas binarios no conocidos), muchas de ellas entre 2" y 0"70
 Algunas de las neglected han resultado desdoblarse a si mismas en dobles cerradas, que no tienen más que esta observación.
 Se constatan movimientos muy rápidos en un grupo de estrellas cerradas, que podrían ser orbitales sin cálculo alguno
 Se corrigen numerosos errores de posición e identificación.
 Se prepara una publicación tipo OAG Supplemnt para que los resultados sean confirmados por el USNO/WDS e incorporados a los catálogos
internacionales.
Estatus del proyecto:
 En marcha.
 Abierto a colaboraciones con otros grupos de trabajo.
 Documentación adicional: Guía práctica
2. GARRAF WIDE PAIRS SURVEY: EQUATORIAL ZONE : PROYECTO PRO-AM

Pro-Am Garraf Wide Pairs Survey 2009-2015
State of work
Code/Statisticals
Finished and revised by OAG/USNO coordination
FD
Finished, in review
FR
In Process
IP
No assigned
Total new pairs detected at december 2015
NA
3.000+
Total new pairs included in WDS at MAY 2012
1.725
Average new pairs/sector
66
Total Equatorial Sectors (DEC +20º / -20º)
48
Field size (Basic Search Unit or BSU)
1m RA x 15’ DEC
Total BSU of Equatorial Zone (DEC +20º / -20º)
230.400
Number of analyzed fields BSU (FD+FR)
230.400
Actual Finished Survey Percentage
100%
APRIL 2015

Pro-Am OAG Garraf Wide Pairs Survey 2009-2015 Staff
Amateur Team
General coordination
Astrometric measures and sector revision
Software support
and database compilation
T.Tobal
(OAG)
X.Miret
(OAG)
I.Novalbos
J.A.Santos
(OAG)
Others members (Am) of research team
J.A.Genebriera
(Tacande Observatory,
La Palma)
C.Schnabel
(A.A.Sabadell coord)
Professional Team
Astrophysical analysis &
Virtual Observatory Tools (SVO)
D.Valls
(OPM-CNRS)
J.A.Caballero-E.Solano
CAB (INTA-CSIC)
Publicaciones sobre estrellas dobles visuales (2003-2015)
OAG General Catalog
T.Tobal & J.Planas 2003
http://ad.usno.navy.mil/wds/unpublished/oag.html
OAG General Catalog of 10.000 Visual Double Stars
measurements
1970-2003 (J.2000,0) Vol I & II. OAG 2003
OAG Supplement nº 1
Tobal 2005a
http://ad.usno.navy.mil/wds/unpublished/oag1.html
Measures of 212 Southern Neglected Visual Double Stars
RA: 00h00m to 12h59m. OAG 2005.
OAG Supplement nº 2
Tobal 2005b
http://ad.usno.navy.mil/wds/unpublished/oag2.html
Measures of 192 Southern Neglected Visual Double Stars
RA: 13h00m to 23h59m. OAG 2005.
OAG Supplement nº 3
Tobal 2005c
http://ad.usno.navy.mil/wds/unpublished/oag3.html
Measures of 16 Neglected Southern Visual Double Stars.
OAG 2005.
OAG Supplement nº 4
Tobal 2005d
http://ad.usno.navy.mil/wds/unpublished/oag4.html
Measures of 104 Northern Neglected Visual Double Stars
RA: 00h00m to 01h59m. OAG 2005.
OAG Supplement nº 5
http://ad.usno.navy.mil/wds/unpublished/oag5.html Measures of 132 Northern Neglected Visual Double Stars
Tobal 2005e
RA: 02h00m to 04h59m. OAG 2005.
OAG Supplement nº 6
Tobal 2005f
http://ad.usno.navy.mil/wds/unpublished/oag6.html
Measures of 234 Northern Neglected Visual Double Stars
RA: 05h00m to 06h59m. OAG 2005.
OAG Supplement nº 7
Tobal 2005g
http://ad.usno.navy.mil/wds/unpublished/oag7.html
Measures of 147 Northern Neglected Visual Double Stars
RA: 07h00m to 12h59m. OAG 2005.
OAG Supplement nº 8
Tobal 2005h
http://ad.usno.navy.mil/wds/unpublished/oag8.html
Measures of 91 Southern Anonymous wide Visual
Double Stars
in Crux. OAG 2005.
OAG Supplement nº 9
Tobal 2005i
http://ad.usno.navy.mil/wds/unpublished/oag9.html
Measures of 143 Northern Neglected Visual Double Stars
AR: 13h00m to 17h59m. OAG 2005.
OAG Supplement nº 10
Tobal 2005j
http://ad.usno.navy.mil/wds/unpublished/oag10.html
Measures of 176 Northern Neglected Visual Double Stars
RA: 18h00m to 19h59m. OAG 2005.
OAG Supplement nº 11
Tobal 2006a
http://ad.usno.navy.mil/wds/unpublished/oag11.html
Measures of 177 Northern Neglected Visual Double Stars
RA: 20h00m to 20h31m. OAG 2006.
OAG Supplement nº 12
Tobal 2006b
http://ad.usno.navy.mil/wds/unpublished/oag12.html
Measures of 142 Northern Neglected Visual Double Stars
RA: 20h31m to 20h59m. OAG 2006.
OAG Supplement nº 13
Tobal 2007a
http://ad.usno.navy.mil/wds/unpublished/oag13.html
Measures of 140 Northern Neglected Visual Double Stars
RA: 21h00m to 21h59m. OAG 2007.
OAG Supplement nº 14
Tobal 2007b
http://ad.usno.navy.mil/wds/unpublished/oag14.html
Measures of 158 Northern Neglected Visual Double Stars
RA: 21h59m to 23h59m. OAG 2007..
http://ad.usno.navy.mil/wds/unpublished/oag15.html
Measures of 20 Southern Anonymous wide Visual
Double Stars
in Crux. OAG 2007.
http://ad.usno.navy.mil/wds/unpublished/oag16.html
Measures of 160 Equatorial Neglected Visual Double
Stars
RA: 00h00m to 05h59m. OAG 2007.
OAG Supplement nº17
Miret 2007b
http://ad.usno.navy.mil/wds/unpublished/oag17.html
Measures of 118 Equatorial Neglected Visual Double
Stars
RA: 06h00m to 06h59m. OAG 2007.
OAG Supplement nº18
http://ad.usno.navy.mil/wds/unpublished/oag18.html
Measures of 143 Equatorial Neglected Visual Double
OAG Supplement nº 15
Tobal 2007c
OAG Supplement nº 16
Miret 2007a
Miret 2007c
OAG Supplement nº19
Miret 2007d
OAG Supplement nº20
Tobal 2008a
OAG Supplement nº21
Tobal 2008b
OAG Supplement nº22
Miret & Tobal 2009a
Stars
RA: 07h00m to 07h59m. OAG 2007.
http://ad.usno.navy.mil/wds/unpublished/oag19.html
Measures of 131 Equatorial Neglected Visual Double
Stars
RA: 08h00m to 11h59m. OAG 2007.
http://ad.usno.navy.mil/wds/unpublished/oag20.html
Measures of 452 Equatorial Neglected Visual Double
Stars
RA: 12h00m to 23h59m. OAG 2008.
http://ad.usno.navy.mil/wds/unpublished/oag21.html
Measures of 35 Southern Anonymous wide Visual
Double Stars
in Apus-Octans. OAG 2008.
http://ad.usno.navy.mil/wds/unpublished/oag22.html
Measures of 65 Common Proper Motion Wide Pairs
RA 00h 00m to RA 01h 00m / DEC+00º 00' to +20º 00’.
OAG CPMWP SURVEY (I). OAG 2009.
OAG Supplement nº23
Tobal 2009a
http://ad.usno.navy.mil/wds/unpublished/oag23.html
Measures of 58 Southern Neglected Visual Double Stars
RA: 00h00m to 23h59m. OAG 2009.
OAG Supplement nº24
Miret & Tobal 2010a
http://ad.usno.navy.mil/wds/unpublished/oag24.html
Measures of 168 Common Proper Motion Wide Pairs
RA 01h 00m to RA 02h 59m / DEC +00º00' to +20º 00’.
OAG CPMWP SURVEY (II). OAG 2010.
http://ad.usno.navy.mil/wds/unpublished/oag25.html
Measures of 440 Common Proper Motion Wide Pairs
RA 02h 00m to RA 02h 59m / DEC +00º00' to -20º 00’
RA 03h 00m to RA 03h 59m / DEC +00º00' to -20º 00’
RA 08h 00m to RA 08h 59m / DEC +00º00' to -20º 00’
RA 10h 00m to RA 10h 59m / DEC +00º00' to -20º 00’.
OAG CPMWP SURVEY (III). OAG 2011.
OAG Supplement nº25
Bernal & Miret et al 2011a
OAG Supplement nº26
Tobal 2011a
Measures of 74 Equatorial Neglected Visual Double
Stars
RA: 00h00m to 05h59m. OAG 2011.
http://ad.usno.navy.mil/wds/unpublished/oag26.html
Caballero et al. 2008
VIII Reunión Científica
Sociedad Astronómica Española
Santander, 7-11 de julio 2008
GARRAF SURVEY:
A search for companions to Luyten stars with the Virtual Observatory.
(Presentación en ppt)
Tobal & Miret
2008a
Double Star Section Circular nº16,
2008
Webb Society
Measures of 1024 Neglected Visual Double Stars
(OAG Supplements nº15- to nº20)
Caballero & Miret, et al.
2008
SAO / NASA/ ADS
Preliminary results on a Virtual Observatory search
for companions to Luyten stars
Tobal & Miret
2009a
Double Star Section Circular nº17,
2009
Webb Society
Miret & Tobal
2009b
Double Star Section Circular nº17,
2009
Webb Society
Tobal 2009c
XXI Convención de Observadores
Agrupació Astronòmica de Sabadell
5-6 de diciembre de 2009
Tobal 2010a
Double Star Section Circular nº18,
2010
Webb Society
Measures of 108 Anonymous and Neglected Southern Visual Double
Stars (OAG Supplements nº21- to nº22)
OAG Common Proper Motion Wide Pairs Survey (Part I)
Estrellas Dobles Visuales: Perspectivas y Programas Pro-Am
(Presentación en ppt.) /
(Audio file of complete Tofol's communication in spanish)
Measures of 58 Southern Neglected Visual Double Stars
RA: 00h00m to 23h59m. OAG 2009.
Miret & Tobal
2010a
Double Star Section Circular nº18,
2010
Webb Society
OAG Common Proper Motion Wide Pairs Survey (Part II)
Miret & Tobal 2010
Agrupació Astronomica de Sabadell
OAG-AAS CPMWPS Workshop
February (I) and July (II) 2010
Highlights of Spanish Astrophysics V
Astrophysics and Space Science
Proceedings, 2010
Preliminary Results on a Virtual Observatory Search for Companions
to Luyten stars (pdf)
Caballero, Miret et al
2010a
A&A 520, A91 (2010)
DOI: 10.1051/0004-6361/201014419
Caballero, Montes et al. 2010b
Astronomy & Astrophisics
http://arxiv.org/abs/1006.4116
The magnetically-active, low-mass, triple system WDS 19312+3607
(pdf)
Communications
II Meeting DSO
23-24 October 2010
UAI Commission 26
Full presentations submitted by authors 2.0
SAO/NASA
Astrophisycs Data Sistem
SAO / NASA Web site
OAG papers Index / Search
Miret, Tobal et al
2011a
Double Star Section Circular nº19,
2011
Webb Society
OAG Common Proper Motion Wide Pairs Survey (Part III)
Miret & Novalbos
2011b
XXII Convenció de Observadores
AAS
Sabadell, 26-27 de noviembre 2011
OAG Common Proper Motion Wide Pairs Survey. Resultados y
metodología . Taller pràctico.
Tobal & Novalbos
2011a
XXII Convenció de Observadores
AAS
Sabadell, 26-27 de noviembre 2011
El Programa "Neglecteds": una colaboración Pro-Am con el SVO .
Visión de conjunto y metodologia.
La reducción astrométrica sobre imágenes POSS-II: métodos de
reducción y su influencia sobre las medidas de theta y rho
Novalbos 2012a
El Observador de Estrellas Dobles nº8
Novalbos & Miret et al. 2012a
El Observador de Estrellas Dobles nº8
El proyecto OAG Common Proper Motion Wide Pairs Survey 20082011
Tobal 2012a
Double Star Section Circular nº20,
2012
Webb Society
Measures of 74 Equatorial Neglected Visual Double Stars
RA: 00h00m to 05h59m. OAG 2011.
Miret, N. 2012a
Càcul orbital: aplicació Geogebra del mètode de raons dobles d' E.Vidal
Observatori Astronòmic del Garraf Abascal per obtenir els valors de P,T, e, en òrbites d'estrelles dobles
visuals..
Caballero & Genebriera et al 2012a
http://arxiv.org/abs/1205.5572
Cool dwarfs in wide multiple systems. Paper 3. Two Common Proper
Motion late type stars separated by over 11 arcmin.
Caballero & et al 2012a
Highlights of Spanish Astrophysics
VII
Astrophysics and Space Science
Proceedings,
Historical background: Collaborating with "professional" amateurs:
low-mass stars in fragile multiple system
Caballero & et al 2012a
Highlights of Spanish Astrophysics
VII
Astrophysics and Space Science
Proceedings,
Collaborating with "professional" amateurs: low-mass stars in fragile
multiple system
Novalbos 2012b
Congreso Estatal de Astronomía.
Gandia 2012
Revisión de Estrellas Dobles Visuales Olvidadas sobre imágenes
UKIDSS (R.E.D.V.O.)
http://ad.usno.navy.mil/wds
Garraf Wide Pairs
Catalog. Part I
Tobal, Miret, et al.
2012b
Catalog of Common Proper Motion Wide Pairs
discovered in OAG CPMWP Survey
Part I: Measures of 1725 pairs: Equatorial Zone
Part I: NOTES from WDS data (may 2012)
Garraf Wide Pairs
Catalog. Part II
Tobal, Valls, et al.
2015
In process (MNRS)
J. A. Caballero, I. Novalbos, T. Tobal, F. X. Miret
2015
In process /A&A/
Catalog of Common Proper Motion Wide Pairs
discovered in OAG CPMWP Survey. Equatorial Zone
Stars and brown dwarfs in the _ Orionis cluster. IV
Wide binaries resolved by UKIDSS
3. IV INTERNATIONAL MEETING PRO-AM, 18-19-20 SEPTEMBER 2015, VILANOVA I LA GELTRÚ, BARCELONA
4.
IV INTERNATIONAL Pro-Am MEETING
BINARY & MULTIPLE STARS
Vilanova i la Geltrú (Barcelona, Spain) 18-19-20 SEPTEMBER 2015
ORGANIZATION: Garraf Astronomical Observatory & Campus Universitari de la Mediterrània
UPDATED TABLE OF SPEAKERS BY ALPHABETIC ORDER, JUNE 2015
NAME
INSTITUTION /
GROUP
COUNTRY TITTLE
CATALOGUE OF ECLIPSING VARIABLES CEV
Abstract
EKATERINA
AVVAKUMOVA
URAL STATE
UNIVERSITY
RUS
A new version of the Catalogue of Eclipsing Variables will be presented. The catalogue
contains parameters and morphological types of light curves for some 7200 stars. Spectral
classification and recently published information about evolutionary type of about 1300
systems are also given. Our catalogue represents the largest list of eclipsing
binaries classified from observations. In the talk we will discuss several problems with the
data and some interesting eclipsing binaries, which were found during our work.
INVESTIGATION OF SEVERAL ECLIPSING BINARIES
Abstract
During the work on Catalogue of Eclipsing Variables we compiled an extensive list of
binaries with lack of observable parameters or doubtful evolutionary type. In the talk we
will present first results of our observational campaign on several northern stars and their
investigations.
BINARITY IN MASSIVE STARS: LS III +46 11"
Abstract
JAVIER ALONSO
UNIVERSIDAD DE
ALICANTE
SPA
Massive stars (stars with masses, at least, larger than 8 times that of our Sun) end their
lives in luminous explosions as core-collapse supernovae or gamma-ray bursts. Most of
this massive stars are born in multiple systems and a large fraction of them are quite close
binaries, so we only can detect the companions by studying its spectra. Recently, in this
way, we have discovered one of the most massive binary known to date: LS III +46 11"
ON THE ACCURACY OF DOUBLE STARS MEASUREMENTS FROM
"LUCKY" IMAGES
Abstract
RAINER ANTON
AMATEUR
GER
The precision and accuracy of measuring double stars from telescopic images is
addressed, in particular for “lucky imaging”. Three major contributions to the total error
margins are dicussed in some detail: the resolving power of the telescope and camera,
variations of the seeing, and the image scale. Representative results are compared with
literature data.
THE LIFE HISTORY OF A DOUBLE-STAR TELESCOPE
BOB ARGYLE
INSTITUTE OF
ASTRONOMY
UNIVERSITY OF
CAMBRIDGE
Abstract
UK
W. R. Dawes ordered an 8-inch (20-cm) refractor from Thomas Cooke and Sons which
began operation in 1864. More than 150 years later it is still in operation. I describe the
history and the travels of the telescope, ending with its current location in Cambridge
where a programme of measurement has been in progress for 25 years.
THE SPECKLE MASKING METHOD -- RECONSTRUCTION OF NARROW
BINARY STARS
KARL LUDWIG
BATH
INTERNATIONALE
AMATEUR
STERNWARTE
Abstract
GER
To get the theoretical telescope resolution there are two methods today. The most modern
one is the adaptive optics though unaccessible for us amateurs. The older method
reconstructs the Airy disk by reducing the data in the PC. Speckle interferometry can and
should be used by us. The first step is the autocorrelation providing already the distance
and position angle of a binary star. The refined speckle masking method allows to
reconstruct the binary and possibly also its photometry.
THE "OBSERVADOR DE ESTRELLAS DOBLES" MAGAZINE: A PRO-AM
EXPERIENCE
OED
RAFAEL
BENAVIDES &
EDGARDO
R.MASA
ASOCIACIÓN
ASTRONÓMICA DE
CÓRDOBA
Abstract
SPA
SOCIEDAD
ASTRONÓMICA
SYMRA DE
VALLADOLID
El Observador de Estrellas Dobles (OED) is a Spanish language electronic double-star
ournal published twice a year. OED was born in 2009 and during this time has become a
reputed magazine distinguished by a marked Pro-Am character. In our communication we
will make a statistical overview of the results obtained in these six years: almost 6000
measures of double stars and more than 700 new pairs have been added to the WDS.
Likewise, the editorial team his gratefulness to all collaborators, real protagonists of these
contributions; we are a mere link for the Pro-Am relationship.
95 YEARS OF INTERFEROMETRY OBSERVATIONS ON DOUBLE STARS
Abstract
DANIEL
BONNEAU
ASTRONOME
HONORAIRE DE
L'OCA3
FRA
During the twentieth century, the double stars have become prime targets for astronomical
observations using optical interferometry techniques. The use of interference micrometers,
the invention of speckle interferometry and the development of stellar interferometers
according to principles of Fizeau and Michelson, finally eliminate the boundaries between
visual binaries, spectroscopic binaries and hotometric binaries. At the beginning of the
twenty-first century, a new milestone has been reached with obtaining images revealing
the morphology of close binaries by means of the first optical telescopes networks working
in aperture synthesis.
BINARY SYSTEMS: FROM 0.2 ARCSEC TO 2 DEG (FIVE YEARS LATER)
Abstract
JOSÉ A.
CABALLERO
CENTRO DE
ASTROBIOLOGIA
CSIC-CAB
SPA
Five years ago, during the II International Meeting of Double Stars Observers in
Sabadell, I gave a talk with a very similar title to this one. It contained astrometric
binaries with up to 40 solar masses in young open clusters, pairs of ultracool dwarfs
separated by thousands astronomical units in the solar neigbourhood or the most fragile
multiple stellar systems at the point of disruption by the Galactic gravitational field. In
2015, I will give another comprehensive and illustrative talk with the latest examples of
extreme or benchmark multiple systems at all angular (and physical) separation, masses
and ages.
WHY AMATEURS HAVE TO OBSERVE ECLIPSING BINARIES?
Abstract
COMMISSION
LAURENT CORP ETOILES DOUBLES
SAF
FRA
Today It‘s important to observe (the photometry is now a technical common for many
amateurs) the Eclipsing Binaries (Ebs) in spite of the data collected by the satellite GAIA.
This presentation describe some characteristics of different Ebs and the art to predict the
minima as well as the necessity to obtain the complete light curve. Later will follow the
analysis of some lights curves and some particularities stars to measure and why. The
tool: “Software Astropline” used for determining the minima and the maxima will be
showing.
MULTIPLICITY OF M DWARFS IN THE CARMENES EXOPLANET SURVEY
SAMPLE
Abstract
MIRIAM
CORTÉS
UNIVERSIDAD
COMPLUTENSE DE
MADRID
SPA
With the help of CARMENCITA, the CARMENES Cool dwarf Information and datA
Archive, we investigate the multiplicity of M dwarfs in the solar neighnourhood
observable from Calar Alto to prepare and characterize the final sample of stars of
CARMENES. Our multiplicity study overs a wide range in projected physical separations,
from 0.5 to 50000 AU. The inner range is overed with a lucky-imaging survey of 385 M
dwarfs with FastCam at the 1.5 m Telescopio Carlos Sánchez (42.3 mas/pix),
complemented with a literature search. The outer range is covered with a detailed
analysis of Washington Double Stars catalogue data and optical images taken by us with
TCP and CAMELOT at the 0.8 m IAC80 telescope, and an astrometric study of all-sky
public images and catalogues. We review the main results of our searches and derive the
multiplicity of M dwarfs at close and wide physical separations.
BINARY STARS IN THE IAU: PAST AND NEW COMMISSIONS
JOSEFINA F.
LING
UNIVERSIDADE DE
SANTIAGO DE
COMPOSTELA
Abstract
SPA
We analyze the role that binary stars have played in the International Astronomical Union
(IAU) through its two most representative Commissions, Commission 26 "Double and
Multiple Stars" and Commission 42 "Close Binary Stars". Next we will justify the reasons
for why both commissions have merged into the Commission G.C1, (i.e., Commission 1 of
Division G) called "Binary and Multiple Star Systems" --at the XXIX IAU General
Assembly, held in Hawaii in August 2015--, as well as their future projects planned .
REDUC TOOL
Abstract (Poster)
SOCIÉTÉ
FLORENT LOSSE ASTRONOMIQUE DE
FRANCE
FRA
CALIFORNIA
POLYTECHNIC
STATE UNIVERSITY
USA
RUSSELL M.
GENET
Reduc is a software commonly used by double stars enthusiasts. It provides easy to use
tools for reductions. The poster presented at the IVth International Pro-Am Meeting on
Binary and Multiple Stars focuses on the main features and on the latest evolutions of the
version 5 (Vilanova version!). They include Easy Lucky Imaging and Batch modes
features.
AUTOMATION OF SPECKLE INTERFEROMETRY
THE METHOD OF VIDAL-ABASCAL / KINKERFLUES FOR DETERMINING
THE ORBIT OF A BINARY SYSTEM FROM SHORT ARCS
Abstract
RAFAEL
HERNÁNDEZ
UNIVERSIDAD
POLITÉCNICA DE
MADRID, AAM
SPA
Generally speaking, this presentation deals with methods of orbit computation of binary
stars based mainly on measurements of position angles. Avoiding as much as possible the
use of separation data presents advantages, reducing errors and allowing the computation
of longer period pairs. We will review the method due to Ernst F. W. Klinkerfues and a
variation proposed by Enrique Vidal Abascal. The method of Klinkerfues is based on some
geometrical notions that theoretically allow the computation of an orbit from
observational data coming from short arcs. Thus, it can be applied to longer period
systems or systems observed during a relatively short time. The variation introduced by
Vidal Abascal presents some advantages over the original. Firstly some computational
improvements, perhaps no longer significant in the era of electronic computation.
Secondly and more importantly, certain insensitiveness of the computation with respect to
errors or uncertainties in the values of orbital elements such as the orbital inclination, the
semiaxis major, the position angle of the ascending node and the argument of periastron.
We will finally show progress on the elaboration of a software application for using these
methods easily.
=======================================================
WORKING ON CHARACTERIZING NON-EMCCD CAMERAS AND
OPTIMIZING PROCESSES FOR SPECKLE AND LUCKY IMAGING OF
DOUBLE STARS
Abstract
GREGORY
JONES
ALT-AZ INITIATIVE
USA
While EMCCDs have become the preferred camera for both speckle interferometry and
lucky imaging, their high cost makes them impractical for many small institutions and
amateurs. The advent of modern industrial and planetary cameras brings viable
alternatives to for those wishing to participate on restrictive budgets.A number of
inexpensive cameras have been tested and the results presented. Additional information
and discussion is presented on optimization strategies to allow performance to be
extended situationally.
WHY WAS THE RECENT ECLIPSE OF THE VISUAL BINARY ALPHA COM
(P=26y) MISSED ?
Abstract
HUIB HENRICHS
MARCELLA
WIJNGAARDEN
ANTON
PANNEKOEK
INSTITUTE FOR
ASTRONOMY
UNIVERSITY OF
AMSTERDAM
NETH
The orbital inclination of the visual (F5V + F6V) binary Alpha Comae (P ~ 26 y) is very
near 90 degrees, which gives a high probability of an eclipse. Observations exist since
1827, but no eclipse has ever been observed. The last possible eclipse was predicted to
occur within two weeks around January 25, 2015 (Muterspaugh & Henry (2014), referred
to as MH14). We reinvestigated the predicted eclipse date in December 2014. For the
special case of a 90 degrees inclined orbit the Thiele-Innes method can be reduced to a
straight forward approach to determine five of the seven common orbital elements
(Omega and i not being relevant), which enables a prediction of the epoch of the nearest
eclipse. Using the same dataset with the same weights as used by MH14, we found
significantly different values for a, omega, e, P, and T0, resulting in a predicted eclipse
date about 2 months earlier than in MH14, and with a 1 sigma uncertainty of 2 weeks.
Using the full dataset, we conclude that the eclipse had unfortunately already passed
before the predicted day. The origin of the discordance between our and MH14s'
prediction was analyzed and attributed to a few erroneous datapoints in MH14, to which
our method is not sensitive. The first next opportunity has to wait until 2040.
DYNAMICAL AND ASTROMETRICAL INVESTIGATIONS OF BINARY STARS
WITH AUTOMATED 26-INCH REFRACTOR IN PULKOVO. LAST RESULTS
Abstract
OLGA KIYAEVA
NATALIA
SHAKHT
PULKOVO
OBSERVATORY
RUS
The 26-inch refractor of Pulkovo observatory is automated and observes without observer.
Now there are about 18000 CCD and 13000 photographic observations of wide double
and multiple stars. To digitize the photographic plates the new device MDD is applied.
The AMP method is used for determination of the orbits of slowly moving stars
(300<P<10000yr) on the basis of short arc of uniform observations. High precision of
relative positions, motions and relative radial velocities is the main condition of these
investigations.
BINARY STAR DATABASE BDB
Abstract
OLEG MALKOV
INSTITUTE OF
ASTRONOMY OF
THE RUS. ACAD.
SCI.
RUS
The fully operational version of the world's principal database of binary and multiple
systems of all observational types, BDB, is presented. The Binary star DataBase is
available at http://bdb.inasan.ru and is created as a source joining the comprehensive
information on binary stars of all observational and evolutionary types. It provides the
user with synthesis of data of large variety of catalogues and databases of binaries of
different types: visual, orbital, astrometric, eclipsing, spectroscopic, photometric, etc. The
BDB contains all data from catalogues on about 50,000 stellar systems of multiplicity 2 to
22: positional, photometric, spectroscopic, orbital and astrophysical parameters are
provided when available. Organization of the information is based on the careful crossidentification of the objects. This allows the user, in particular, to search data on binaries
having certain sets of parameters within the complete catalogued data set.
VISUAL AND ORBITAL BINARIES: PRINCIPAL CATALOGUES,
SELECTION EFFECTS AND PARAMETER DISTRIBUTIONS
Abstract
The most complete list of visual binary systems with known orbital elements is compiled. It
is based on OARMAC and ORB6 data and contains 3139 orbits for 2278 pairs. A refined
subset of high quality orbits with available distance was also compiled. Relations between
and distributions along different observational parameters are constructed, and an
analysis of selection effects is made. Dynamical, photometric and spectral masses of
systems are estimated, and reasons for discrepancies between them are discussed.
SPA
NÚRIA MIRET
GARRAF
ASTRONOMICAL
OBSERVATORY
CALCULATION OF VISUAL DOUBLE STAR ORBITS USING GEOGEBRA
Abstract
The aim of this paper is to develop the E. Vidal Abascal method for calculating visual
double stars’ apparent orbits with software GeoGebra and check the accuracy of the
method using reference stars with known orbits. The results obtained correlate to the
official ones so this enables to consider this method for studying orbital systems without
preliminary orbit calculated.
&
UNIVERSITAT DE
BARCELONA
CALIBRATING THE METALLICIITY OF M-DWARFS WITH WIDE VISUAL
BINARIES
Abstract
DAVID MONTES
NATALIA
SHAKHT
UNIVERSIDAD
COMPLUTENSE DE
MADRID
PULKOVO
OBSERVATORY
SPA
In this contribution we summarise our ongoing project aimed at calibrating the metallicity
of M-dwarfs. We have selected a large sample of physical binaries composed of an F-, Gor K-dwarf primary and an M-dwarf secondary. High-resolution spectra of the primary
components are being analysed in order to determine, in an uniform way, accurate
atmospheric parameters, metallicity and abundance of different elements. Low-resolution
spectra of the secondary components allow us to determine good spectral types and
metallicity-dependent spectral indices. Using all this information we are improving the
current spectroscopic and photometric calibrations of the M-dwarf metallicity and we are
testing some new ones. The resulting calibrations will be very useful in the
characterisation of the input sample of exoplanets search programs around M-dwarfs like
CARMENES (Calar Alto high-Resolution search for M dwarfs with Exoearths with Nearinfrared and optical Échelle Spectrographs).
THE POSSIBLE HOST STARS OF EXOPLANETS ON THE PULKOVO
OBSERVATIONS PROGRAMME.
Abstract (Poster)
et al
The Pulkovo programme for many years was dedicated the observations and study of the
single and binary stars close to the Sun to determine the parameters of their movement,
the orbits of binary stars, masses and to search invisible components. The most part of
them are the stars of spectral classes F, G,K,M, and they could be parent stars for
exoplanetary systems. We estimated the possible astrometric signals from planets with
different masses which could be available with more high technics in the future. Also for
some stars we estimated the limits of possible habitable zones (HZ) with the using the new
data about stars and with the models by Kasting 1993, Selsis et al.,2007 and Rushby et al.,
2013 for HZ.
OCCULTATIONS AS A TOOL TO DETECT BINARY SYSTEMS
Abstract
CARLES
SCHNABEL
AGRUPACIÓ
ASTRONÓMICA DE
SABADELL (AAS)
SPA
Lunar and asteroidal occultations permit the discovery, confirmation or characterization
of double or multiple star systems. The Occult application developed by Dave Herald,
allow the computation of occultations of stars catalogued as doubles, and the Occult
Watcher application created by Hristo Pavlov, the coordination of observation
campaigns. However, there are also many cases in which occultations lead to double stars
discoveries within distances in the range of hundredths of an arc-second. The same
Occult, on the one hand, and Tangra from Hristo Pavlov, enable the analysis of
recordings and determining the position parameters of a double system. I will show some
examples about these topics.
EDUCATION AND OUTREACH ACTIVITIES IN THE FRAMEWORK OF THE
SPANISH VIRTUAL OBSERVATORY
ENRIQUE
SOLANO
CENTRO DE
ASTROBIOLOGIA
CSIC-CAB
Abstract
SPA
In this presentation we will describe the main education and outreach activities that have
been carried out in the framework of the Spanish Virtual Observatory. In particular, we
will outline the scientific and technical activities that are being done in collaboration with
astronomical amateurs.
ITA
GIANLUCA
SORDIGLIONI
STELLE DOPPIE: DOUBLE STAR DATABASE SEARCH ENGINE TO THE WDS
Abstract
AMATEUR
Abstract: Finding information on double stars may be very difficut for amateur
astronomers. The WDS assign a catalog number for the doubles and cross-references with
existing catalogs is a time-consuming operation. StelleDoppie addresses all those
problems, providing a clear interface to present information and a power tool to find
doubles. Tips and tricks to improve users' searching skills will be presented.
SPA
TÒFOL TOBAL
XAVIER MIRET
IGNACIO
NOVALBOS
GARRAF
ASTRONOMICAL
OBSERVATORY
OAG WIDE PAIRS SURVEY PROJECT (2008-2015) & GWP CATALOGUE OF
3000+ SYSTEMS
Abstract
OAG Common Proper Motion Wide Pairs Survey (CPMWPS) is a Pro-Am project
developed and coordinated by Garraf Astronomical Observatory and professional team
(D.Valls, J.A.Caballero, E.Solano et al.) since 2008 to 2015 with the aim of finding new
anonymous common proper motions stars pairs which can form physical systems but
which are not yet catalogued. Making use of the Virtual Observatory Tools we have
completed a systematic exploration of the Equatorial Zone ( from RA 00h 00m 00s to 23h
59m 59s between Dec +20º 00’ 00” and -20º 00' 00'' ) taking as a fundamental parameter
a common proper motion higher than 50 marcsec/year, without limiting magnitude. We
present a catalogue with more that 3000 new pairs detected as well as their influence in a
new professional projects.
THE ROLE OF BINARY STARS IN THE PLEIADES
Abstract
DAVID VALLS
CNRS / OPM
FRA
Abstract. We review the latest results on the open star cluster M45. New massive surveys
have provided us with unprecedented details on proper motions, and new measures of the
dynamical mass of the cluster. The evolution of the cluster is also jointly constrained from
the colour-magnitude diagram of its members, where unresolved binary systems can be
taken into account. We also discuss the problem of its distance, and the results of a proam programme aimed at understanding a unique binary system.
LUOIS AGATI
COMMISSION
ETOILES DOUBLES
SAF
FRA
MOHAMMED A.
AHAD
AMATEUR
UK
RAFAEL
CABALLERO
ASOCIACIÓN
ASTRONÓMICA
HUBBLE
SPA
ROBERTO Mª
CALOI
UNIONE ASTROFILI
BIELLESI
ITA
NÚRIA
JORDANA
UNIVERSITAT DE
BARCELONA
SPA
ENRIQUE DE
FERRA MARTÍN
ACADEMIA DE
CIENCIAS E
INGENIERÍAS DE
LANZAROTE
SPA
GUILLEM
MARTÍ
UNIVERSITAT DE
BARCELONA
SPA
LLUIS RIBÉ
AGRUPACIÓ
ASTRONÓMICA DE
SABADELL
SPA
COMMISSION
EDGARD SOULIÉ ETOILES DOUBLES
SAF
FRA
HENRY ZIRM
AMATEUR
GER
Updated: 8 June, 2015: contact us for any question: informaciooag@gmail.com