SPITZER Observations of z~3 Lyman Break Galaxies: stellar masses and mid-infrared properties

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dc.creatorRigopoulou, D.
dc.creatorHuang, J. -S.
dc.creatorPapovich, C.
dc.creatorAshby, M. L. N.
dc.creatorBarmby, P.
dc.creatorShu, C.
dc.creatorBundy, K.
dc.creatorEgami, E.
dc.creatorMagdis, G.
dc.creatorSmith, H.
dc.creatorWillner, S. P.
dc.creatorWilson, G.
dc.creatorFazio, G. G.
dc.date2006-05-15
dc.date.accessioned2026-07-07T10:39:00Z
dc.date.available2026-07-07T10:39:00Z
dc.descriptionWe describe the spectral energy distributions (SEDs) of Lyman Break Galaxies (LBGs) at z~3 using deep mid-infrared and optical observations of the Extended Groth Strip, obtained with IRAC and MIPS on board Spitzer and from the ground, respectively. We focus on LBGs with detections at all four IRAC bands, in particular the 26 galaxies with IRAC 8 micron band (rest--frame K-band) detections. We use stellar population synthesis models and probe the stellar content of these galaxies. Based on best--fit continuous star-formation models we derive estimates of the stellar mass for these LBGs. As in previous studies, we find that a fraction of LBGs have very red colors and large estimated stellar masses (M_stellar > 5 x 10 ^{10} M_solar): the present Spitzer data allow us, for the first time, to study these massive LBGs in detail. We discuss the link between these LBGs and submm-luminous galaxies.We find that the number density of these massive LBGs at high redshift is higher than predicted by current semi-analytic models of galaxy evolution.
dc.descriptionaccepted for publication by Astrophysical Journal
dc.identifierhttps://arxiv.org/abs/astro-ph/0605355
dc.identifierhttp://arxiv.org/abs/astro-ph/0605355
dc.identifierAstrophys.J.648:81-94,2006
dc.identifierdoi:10.1086/505784
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180881
dc.subjectAstrophysics
dc.titleSPITZER Observations of z~3 Lyman Break Galaxies: stellar masses and mid-infrared properties
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