The Luminosity-Size and Mass-Size Relations of Galaxies out to z~3

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dc.creatorTrujillo, Ignacio
dc.creatorRudnick, Gregory
dc.creatorRix, Hans-Walter
dc.creatorLabbe, Ivo
dc.creatorFranx, Marijn
dc.creatorDaddi, Emanuele
dc.creatorVan Dokkum, Pieter G.
dc.creatorSchreiber, Natascha M. Forster
dc.creatorKuijken, Konrad
dc.creatorMoorwood, Alan
dc.creatorRottgering, Huub
dc.creatorVan De Wel, Arjen
dc.creatorVan Der Werf, Paul
dc.creatorVan Starkenburg, Lottie
dc.date2003-07-01
dc.date2003-12-16
dc.date.accessioned2026-07-07T11:46:05Z
dc.date.available2026-07-07T11:46:05Z
dc.descriptionThe luminosity-size and stellar mass-size distributions of galaxies out to z~3 is presented. We use very deep near-infrared images of the Hubble Deep Field South in the J_s, H, and K_s bands, taken as part FIRES at the VLT, to follow the evolution of the optical rest-frame sizes of galaxies. For a total of 168 galaxies with K_{s,AB}<23.5, we find that the rest-frame V-band sizes r_{e,V} of luminous galaxies (<L_V>~2x10^{10}h^{-2}L_sun) at 2<z<3 are 3 times smaller than for equally luminous galaxies today. In contrast, the mass-size relation has evolved relatively little: the size at mass <M_*>~2x10^{10}h^{-2}M_sun, has changed by 20(+-20)% since z~2.5. Both results can be reconciled by the fact that the stellar M/L ratio is lower in the luminous high z galaxies than in nearby ones because they have young stellar populations. The lower incidence of large galaxies at z~3 seems to reflect the rarity of galaxies with high stellar mass.
dc.description39 pages, 14 figures, ApJ in press, new changes made to match the accepted version
dc.identifierhttps://arxiv.org/abs/astro-ph/0307015
dc.identifierhttp://arxiv.org/abs/astro-ph/0307015
dc.identifierAstrophys.J.604:521-533,2004
dc.identifierdoi:10.1086/382060
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202102
dc.subjectAstrophysics
dc.titleThe Luminosity-Size and Mass-Size Relations of Galaxies out to z~3
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