Journal
ASTROPHYSICAL JOURNAL
Volume 700, Issue 1, Pages 276-283Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/700/1/276
Keywords
galaxies: evolution; galaxies: fundamental parameters
Categories
Funding
- GALEX [G15-036]
- Texas AM University
- NSF [AST-0808165]
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We present the results of a stellar population analysis of 30 Ly alpha emitting galaxies (LAEs) at z similar to 0.3, previously discovered with the Galaxy Evolution Explorer. With a few exceptions, we can accurately fit model spectral energy distributions to these objects, representing the first time this has been done for a large sample of LAEs at z < 3, a gap of similar to 8 Gyr in the history of the universe. From the 26/30 LAEs which we can fit, we find an age and stellar mass range of 200 Myr-10 Gyr and 10(9)-10(11) M(circle dot), respectively. These objects thus appear to be significantly older and more massive than LAEs at high redshift. We also find that these LAEs show a mild trend toward higher metallicity than those at high redshift, as well as a tighter range of dust attenuation and interstellar medium geometry. These results suggest that low-redshift LAEs have evolved significantly from those at high redshift.
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