Hubble Space Telescope Imaging of the CFRS and LDSS Redshift Surveys---III. Field elliptical galaxies at 0.2 < z < 1.0

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dc.creatorSchade, David
dc.creatorLilly, S. J.
dc.creatorCrampton, D.
dc.creatorEllis, R. S.
dc.creatorFevre, O. Le
dc.creatorHammer, Francois
dc.creatorBrinchmann, Jarle
dc.creatorAbraham, R.
dc.creatorColless, Matthew
dc.creatorGlazebrook, K.
dc.creatorTresse, L.
dc.creatorBroadhurst, Tom
dc.date1999-06-09
dc.date.accessioned2026-07-07T11:08:28Z
dc.date.available2026-07-07T11:08:28Z
dc.descriptionSurface photometry has been performed on a sample of 46 field elliptical galaxies. These galaxies are described well by a deVaucouleurs R^{1/4} profile. The sample was selected from the combined Canada-France and LDSS redshift surveys and spans the range 0.20 < z < 1.00. The relationship between galaxy half-light radius and luminosity evolves such that a galaxy of a given size is more luminous by Delta M_B=-0.97 \pm 0.14 mag at z=0.92 and the mean rest-frame color shifts blueward by Delta (U-V) =-0.68 \pm 0.11 at z=0.92 relative to the local cluster relations. Approximately 1/3 of these elliptical galaxies exhibit [OII] 3727 emission lines with equivalent widths > 15 angstroms indicating ongoing star formation. Estimated star-formation rates imply that \le 5% of the stellar mass in the elliptical galaxy population has been formed since z=1. We see no evidence for a decline in the space density of early-type galaxies with look-back time. The <V/V_{max}> statistics and a comparison with local luminosity functions are both consistent with the view that the population of massive early-type galaxies was largely in place by z~1. This implies that merging is not required since that time to produce the present-day space density of elliptical galaxies.
dc.description21 pages plus 8 figures plus 5 tables. Accepted by Astrophysical Journal
dc.identifierhttps://arxiv.org/abs/astro-ph/9906171
dc.identifierhttp://arxiv.org/abs/astro-ph/9906171
dc.identifierAstrophys.J.525:31-46,1999
dc.identifierdoi:10.1086/307885
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190148
dc.subjectAstrophysics
dc.titleHubble Space Telescope Imaging of the CFRS and LDSS Redshift Surveys---III. Field elliptical galaxies at 0.2 < z < 1.0
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