Other
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.2404l&link_type=abstract
American Astronomical Society, AAS Meeting #211, #24.04; Bulletin of the American Astronomical Society, Vol. 39, p.775
Other
Scientific paper
Lyman-alpha Emitting Galaxies (LAEs) are important probes of galaxy formation. Recent narrow-band surveys have compiled large samples of LAEs at z = 3 - 7, making it possible to study the formation and evolution of galaxies out to high redshifts. Given the importance of LAEs to galaxy formation studies, it is crucial to understand the physical nature of these objects. We present Spitzer/IRAC observations of LAEs at z = 3.1, 5.7, and 6.6. At these redshifts, IRAC samples the rest-frame optical and near-IR emission from the evolved stellar populations, thus allowing us to derive stringent stellar mass and age estimates for the LAEs. Analysis at z = 5.7 and 6.6 shows that IRAC-detected LAEs may harbor massive ( 1010 M&sun;) and evolved (> 200 Myr) stellar populations, similar to z 6 IRAC-detected i'-dropout galaxies. On the other hand, comparing IRAC-detected and IRAC-undetected LAEs at z = 3.1 shows that LAEs exhibit a wide range of mass (108 - 1010 M&sun;) and age (0.2 - 2 Gyr). The z = 3.1 IRAC-detected LAEs have IRAC colors and magnitudes that lie at the faint blue end of the z 3 LBG color-magnitude distribution, suggesting that they may be the low mass extension of the LBG population. Our results show that LAEs make up a diverse population, consisting of galaxies at various stages of evolution. The wide range of age and mass shown by the LAEs suggests that the Lyα luminous phase of galaxies may either be a long-lasting or recurring phenomenon.
Fazio Giacomo
Huang Jianwei
Lai Kamson
No associations
LandOfFree
Lyman-Alpha Emitting Galaxies: A Diverse Population of Star-Forming Galaxies at High Redshift does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Lyman-Alpha Emitting Galaxies: A Diverse Population of Star-Forming Galaxies at High Redshift, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lyman-Alpha Emitting Galaxies: A Diverse Population of Star-Forming Galaxies at High Redshift will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1475751