Overview and Status
Overview and Status
http://www.stsci.edu/science/goods
Abstract
The GOODS HST Treasury Program - about 60% complete
The Great Observatories Origins Deep Survey (GOODS) is a large project to create a very deep, panchromatic, public data set for
community research on the distant Universe. The program is surveying two fields, the Hubble Deep Field North (HDF-N) and the
Chandra Deep Field South (CDF-S), covering a total of ~320 arcmin2. GOODS includes a SIRTF Legacy Program (PI: Mark
Dickinson) and a Hubble Treasury Program of ACS imaging (PI: Mauro Giavalisco). The ACS observations were also optimized for
the detection of high-z supernovae, which are being followed by a target-of-opportunity Hubble GO Program (PI: Adam Riess). The
bulk of the CDF-S ground-based data presently available comes from an ESO Large Programme (PI: Catherine Cesarsky) which
includes both deep imaging and multi-object spectroscopy. A substantial allocation of NOAO time is providing optical and nearinfrared imaging, primarily for the northern field. Complementary programs are gathering data on the GOODS fields from many
other facilities. The SIRTF/GOODS program will be carried out in 2003-4, pending SIRTF launch in April.. ACS imaging is well
advanced, with several incremental public releases of processed data already available. We summarize the current status of GOODS
and give an overview of the data products currently available. Many early science results from the survey are presented in other
GOODS papers at this meeting.
Mauro Giavalisco (STScI), PI
GOODS co-investigators (SIRTF & HST): Amy Barger (University of Wisconsin, Madison), Jacqueline Bergeron (IAP), Niel Brandt (Penn State),
Stefano Casertano (STScI), Catherine Cesarsky (ESO), Ranga-Ram Chary (UC Santa Cruz ), Christopher Conselice (Caltech), Lennox Cowie (University of Hawaii), Stefano Cristiani (Trieste), Mark
Dickinson (SIRTF Legacy PI, STScI), Peter Eisenhardt (JPL/Caltech), David Elbaz (CEA Saclay), Richard Elston (University of Florida), S. Michael Fall (STScI), Christopher Fassnacht (Davis),
Henry C. Ferguson (STScI), Robert Fosbury (ST-ECF), Andrew Fruchter (STScI), Jonathan Gardner (GSFC), Gordon Garmire (Penn State), Riccardo Giacconi (AUI/JHU), Mauro Giavalisco (HST
Treasury PI, STScI), Norman Grogin (JHU), Michael Hauser (STScI), Robert Hanisch (STScI), Richard Hook (ST-ECF), Inger Jørgensen (Gemini Observatory), Anton Koekemoer (STScI),
Michael Ledlow (Gemini Observatory), Bruno Leibundgut (ESO), Mario Livio (STScI), Ray Lucas (STScI), Piero Madau (UC Santa Cruz), Bahram Mobasher (STScI), Paolo Padovani (STScI),
Casey Papovich (University of Arizona), Bernard Rauscher (STScI), William Reach (SSC/Caltech), Alvio Renzini (ESO), Marcia Rieke (University of Arizona), Adam Riess (STScI), Piero Rosati
(ESO), Katherine Roth (Gemini Observatory), Jean-René Roy (Gemini Observatory), Ethan Schreier (STScI), Hyron Spinrad (UC Berkeley), Daniel Stern (JPL/Caltech), Massimo Stiavelli (STScI),
Marianne Takamiya (University of Hawaii, Hilo), Eric Tollestrup (Boston University), Megan Urry (Yale University), Robert Williams (STScI), Claudia Winge (Gemini Observatory), Edward L.
(Ned) Wright (UCLA)
Other GOODS team members (STScI):
The GOODS HST Treasury Program is using the new Advanced Camera for Surveys (ACS) on HST to image the two GOODS fields
through four broad, non-overlapping filters: F435W (B), F606W (V), F775W (i), and F850LP (z). The exposure times are 3, 2.5, 2.5
and 5 orbits per filter, respectively, reaching extended-source sensitivities within 0.5-0.8 mags of the WFPC2 HDF observations. GOODS
is a deep survey, not a wide one, but it is much larger than most previous, deep HST/WFPC2 surveys, covering 320 square arcmin, 32x
the combined solid angles of the HDF-N and S, and 4x larger than their combined flanking fields. The Viz imaging is being taken in
five repeat visits separated by approximately 45 days, enabling a search for SNe Ia at 1.2 < z < 1.8 to test the transition from cosmic
deceleration to acceleration predicted in world models dominated by dark energy. The z-band observations image the optical rest-frame
light from galaxies out to z = 1.2, with angular resolution superior to that from WFPC2. The ACS BViz imaging will enable a systematic
survey of Lyman break galaxies at 4 < z < 6.5, reaching back to the suggested epoch of reionization. The HST data will also provide a
powerful tool to study the dark matter mass around galaxies using gravitational lensing, to search for low-mass stars in our own galaxy, and
perhaps to detect moving objects in the outer solar system.
The ACS imaging is approximately 60% completed at the time of writing with four out of five epochs of CDF-S successfully acquired and
two of the HDF-N.
A very small subset (2’.2 x
2’.7) of the CDF-S GOODS
field based on just the first
epoch data.
Carl Biagetti, John Caldwell, Tomas Dahlen, David Grumm, Rafal Idzi, Shardha Jogee, Claudia Kretchmer,
Vicki Laidler, Kyoungsoo Lee, ,Lexi Moustakas, Yousin Park, Swara Ravindranath, Marin Richardson, Louis Strolger
Other GOODS collaborators:
Dave Alexander (Penn State), Franz Bauer (Penn State), Peter Capak (IfA), Eleni Chatzicristou (Yale), Emmanuele Daddi (ESO),
David Frayer (SSC), Jennifer Lotz (UCSC), Duilia de Mello (GSFC), Stefano Ettori (ESO), Ann Hornschemeier (JHU), Harald Kuntschner (ESO), Mario Nonino (Trieste), Benoit Vandame (ESO).
Apologies if your name isn’t here…
A possible type Ia Supernova
(SN2002fw) found in the first
GOODS SN search after
epoch 2 data were acquired.
Primary Science Goals of GOODS:
The mass assembly history of galaxies
Tracking the formation of the Hubble sequence
Survey of star-forming galaxies to z ~ 6.5
Census of energetic output from star formation and supermassive black holes
Measurements or limits on the discrete source component of the extragalactic background light
Discovery of high-z supernovæ to explore the dynamics of cosmic expansion
Weak lensing to study the distribution of dark matter in halos and large scale structure
The SIRTF Legacy Program - pending SIRTF launch and commissioning
Mark Dickinson (STScI), PI
GOODS incorporates a SIRTF Legacy Program which will carry out the deepest observations with that facility from 3.6 to 24 mm.
The project will trace the stellar mass assembly history of galaxies, the evolution of their stellar populations, and the energetic
output from star formation and active nuclei. By observing at l > 3mm, SIRTF will measure rest-frame near- and mid-infrared
light from objects at 1 < z < 6. These data can be used to study the stellar mass content and obscured star formation in distant
galaxies, but very deep observations are needed to detect "ordinary" galaxies at these high redshifts.
SIRTF will image both GOODS fields at 3.6-8 mm with IRAC, with a mean exposure time per position of approximately 24 hours
per band. 10 hour exposures with MIPS at 24 mm are also planned, pending on-orbit tests to establish that the data will achieve a
significant gain in sensitivity relative to planned 20 minute GTO exposures. A pair of ultra-deep IRAC fields are planned for the
HDF-N, with total exposure times up to ~100 hours, pending on-orbit demonstration of instrument performance.
The GOODS IRAC observations are designed to detect rest-frame near-infrared light from the progenitors of galaxies like the
Milky Way out to z=4, and will enable us to measure the stellar mass distribution of galaxies through most of cosmic history. The
smaller, ultradeep IRAC field will probe the faintest sources and highest redshifts. The MIPS observations will offer the best
opportunity to detect emission from dust-obscured star formation in ordinary galaxies out to z=2.5, and, in concert with the
Chandra data, will enable a census of supermassive central black holes in obscured and unobscured AGN. Overall, the data will
provide the best lower limits to the extragalactic background light at 3.6-24 mm. Together with the other components of the
GOODS program, this survey will give a uniquely comprehensive history of galaxies, from early epochs to the relatively recent past,
and will serve as a bridge to future exploration in these wavelength and redshift regimes with the James Webb Space Telescope.
The GOODS SIRTF fields, closely matching the areas also
imaged by ACS. The outline of the original WFPC2 HDF-N is
shown schematically on the northern field.
http://www.stsci.edu/science/goods
HST GOODS Treasury data:
–Raw and basic pipeline processed frames: available upon acquisition from STScI archives.
–Version 0.5 – best-effort reduced images (with limited reprocessing) 2 months after each
campaign; no mosaics. Epochs 1 & 2 already available
–Version 1.0 – full release of image data products, 3 months after last campaign; mosaics
available; no catalogs.
–Version 2.0 – final recalibrated data products and catalogs, 6 months after last campaign.
ESO Large Programme - much near-IR imaging completed, spectroscopy in progress
Catherine Cesarsky (ESO), PI
An ESO large programme is in progress, providing data for the GOODS/CDF-S. This began in 2001 with deep near-IR (J, H and Ks)
imaging with ISAAC on the VLT. These data, covering ~30% of the GOODS area, were released in 2002. Spectroscopy with FORS2 began
in the current observing season. It has been proposed to continue this with the high-multiplex VIMOS spectrograph in 2003-4, obtaining
redshifts for ~6000 galaxies in the CDF-S field.. There is also a significant public archive of other ESO CDF-S data, including near-IR
imaging from SOFI on the NTT and optical data from the Wide Field Imager on the 2.2m telescope on La Silla.
In the spirit of all Legacy Programs, the ESO Director General has decided that data obtained with ESO facilities in direct support of the
GOODS project will be immediately made public worldwide. Reduced imaging data and source catalogs prepared by the ESO Imaging Survey
(EIS) Team will be released by ESO within a few months from the conclusion of each observing run. Imaging and spectroscopic data in the
CDF-S obtained with ESO telescopes by proprietary programmes will also become public worldwide via the ESO Science Archive before the
release of the SIRTF/GOODS data, or after the expiration of the one year proprietary period.
A color composite small subset of the CDF-S
created from deep public optical/near-IR
imaging from FORS and ISAAC on the
ESO VLT.
A sample spectrum of an
emission line galaxy at z=0.976
from ESO VLT FORS2 observations
of the CDF-S.
http://www.eso.org/science/goods
Complementary Data from other Facilities
Simulations of the HDF-N for 100 hours of IRAC
integration in each of the four 3.6-8mm bands. Two PSF
models are used: the true SIRTF PSF should be
somewhere between the two.
NOAO Observations – now underway
NOAO has allocated a substantial block of time to support the SIRTF Legacy Science program. GOODS is using the KPNO 4m
telescope and FLAMINGOS instrument to carry out deep, near-infrared imaging (J, H and Ks) of the 10’x16’ GOODS/HDF-N
field, as well as optical imaging with the MOSAIC camera. A separate allocation of time with the CTIO 4m is providing deep Uband imaging for the CDF-S.
Observations in 2001-2 were severely hampered by weather, particularly for the FLAMINGOS program, where rather little useful
data were obtained. Some early MOSAIC imaging for the CDF-S have been released via the GOODS web pages. Newer, better Uband imaging of both fields was obtained in 2002, and will be released soon. 15 nights have been scheduled to continue the KPNO
program in the 2003A semester. Weather permitting, this will provide a substantial body of near-IR and optical data to
complement the ongoing space-based programs.
The GOODS fields are the targets for a wide variety of deep observing programs with facilities spanning the electromagnetic spectrum. Many
of these data sets are already available to the community. Others are being obtained as observing programs led by GOODS team members,
or in collaboration with other groups. Some of these programs are summarized here.
• X-ray: Chandra (2 Msec in HDF-N; 1 Msec in CDF-S) XMM-Newton (GTO programs in progress)
• Radio: ATCA (20cm observations of CDF-S by Koekemoer et al.); VLA, WSRT (published HDF-N data from
Richards et al., Garrett et al.)
• Sub-mm: JCMT/SCUBA observations targeting HDF-N area sources by Hughes et al., Barger et al.
Scan mapping by Scott et al.
• 70, 160 mm: SIRTF GTO team observations planned for 2003-4.
• Optical: Deep Subaru SuPrime camera imaging of HDF-N by Cowie et al. and other groups
• Spectroscopy:
HDF-N: ~700 HDF-N redshifts published by Cohen et al. and others.
Keck/DEIMOS+LRIS observing by several groups scheduled for 2003. Gemini/GMOS observations planned.
CDF-S: ~400+ redshifts for K < 20 galaxies (Cimatti et al.) and X-ray sources (Hasinger et al.).
Gemini-S/FLAMINGOS demonstration science program of near-infrared spectroscopy (see poster by Stern et al.)
Compiled on behalf of the GOODS teams by Richard Hook and Mark Dickinson for the January 2003 AAS in Seattle