| Type |
Conference Paper |
| Names |
James D. Lowenthal, M. A. Bershady, J. Gallego, R. Guzman, S. Hameed, D. C. Koo |
| Proceedings Title |
Bulletin of the American Astronomical Society |
| Conference Name |
American Astronomical Society, AAS Meeting #216, #307.02 |
| Volume |
41 |
| Date |
May 1, 2010 |
| URL |
http://adsabs.harvard.edu/abs/2010AAS...21630702L |
| Library Catalog |
NASA ADS |
| Abstract |
We present new infrared images and photometry with Spitzer/IRAC + MIPS
of over 20 luminous compact blue galaxies (LCBGs), half at z 0 and half
at z 0.75. LCBGs are extreme starburst galaxies with strong evolution,
providing up to 40% of the observed increase in global star formation
rate density between z=0 and z=1. They are important to study as they
not only play a vital role in galaxy evolution, but they are also
excellent local analogs for distant starburst galaxies, such as Lyman
break galaxies at z>3. Almost all of our LCBGs are detected in IRAC,
and most are also detected in MIPS 24um. We fit multi-component stellar
population synthesis models to the full spectral energy distributions
and set new constraints on both the underlying stellar populations in
these low-mass, low-metallicity, high specific star formation
rate-systems and on the presence of additional star formation hidden
from the optical by obscuring dust. We combine the Spitzer data with
high-resolution rest-UV and -optical imaging from HST to characterize
the spatial distribution of star formation and to assess the incidence
of major mergers driving the starbursts. |