Emission and reflection nebula are two types of star forming??? nebula
[plural uses “ae”] that can be distinguished between through
spectrometry. Through photographing specific nebula using visible light
and Hydrogen Alpha filters, calibrating and processing the images[omit
for abstract], and analyzing their light emission graphs[weber calls
these “junk words”], differences between emission and reflection nebula
are analyzed.[This is the “meat” of your abstract. You can find a
better description than “analyzed” – too “junky”. What did your
analysis consist of? Plotting profiles of intensity, measuring the
total stellar intensities against background nebula intensity, etc] By
analyzing different nebula we determine more about how stars form
inside a nebula[ we did not address formation of stars]. Hot young
stars emit a spectrum of hydrogen wavelengths which ionize inside a
dust and gas cloud and glow red when viewed through a hydrogen Alpha
filter and the nebula is a similar magnitude to the nearby stars. [this
physics is not quite correct. You need to read the textbooks. How
does the emission nebula become excited to emit the H-alpha radiation?]
Reflected visible light in reflection nebula is light reflected off of
dust and gas and nearby stars appear much brighter than the dust
nebula.[The source of light for reflection nebulae is “ordinary” stars,
stars that are not such extreme high temperature, that they don’t have
much UV radiation. The copious UV radiation from extrememly hot stars
causes the hydrogen clouds to fluoresce in H-alpha] Distinguishing
between emission and reflection nebula helps astronomers learn more
about how young stars develop and interact with their stellar
nursery[omit].
there are too many words! i will keep working on it this weekend, and i
would love some help cause i am sure you have written quite a few, i
would like input on whether i am getting at the basic principles and
parts of an abstract. You have the basic format of the abstract wellstarted. You need to work on the physics in the paragraph that
the ppotd project sounds good, i forgot about it till now. i think i
can whip something together using the photos we've taken and it will
help with focusing my project. [I remember you and Chelsea composing a
Power Point on this idea early in class as a start on your
presentations.
-raya
Good start! Abstracts are difficult. Be prepared to revise it at least 5 times.
How about leading off with: “Diffuse nebulae consist of 3 major types: dark clouds,
reflection nebulae, and emission nebulae.” We photographed several? of each.
Can you observe Saturday night? Things seem quite “iffy” tonight. If it clears it will be
very windy and cold, but the satellite looks like it will continue to be clear on Saturday.
I’ll make a decision about tonight at around 5:00 pm.
Don