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Date and Time of the Query: 2019-04-25 T13:13:20 PDT
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For refcode 1997ApJ...477L..17S:
Retrieve 11 NED objects in this reference.
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Copyright by American Astronomical Society. Reproduced by permission
1997ApJ...477L..17S Evolution of Cluster Ellipticals at 0.2 < z < 1.2 from Hubble Space Telescope Imaging DAVID SCHADE, L. FELIPE BARRIENTOS, AND OMAR LOPEZ-CRUZ Department of Astronomy, University of Toronto, 60 St. George Street, Toronto, Canada M5S 3H8 Received 1996 March 22; accepted 1996 December 13 ABSTRACT Two-dimensional surface photometry derived from Hubble Space Telescope imaging is presented for a sample of 225 early-type galaxies (assumed to be cluster members) in the fields of nine clusters at redshifts 0.17 < z < 1.21. The 94 luminous ellipticals (MAB(B) < -20; selected by morphology alone with no reference to color) form tight sequences in the size- luminosity plane. The position of these sequences shifts, on average, with redshift, so that an object of a given size at z = 0.55 is brighter by {DELTA}M(B) = -0.57+/-0.13 mag than its counterpart (measured with the same techniques) in nearby clusters. At z = 0.9 the shift is {DELTA}M(B) = -0.96 +/- 0.22 mag. If the relation between size and luminosity is universal, so that the local cluster galaxies represent the evolutionary endpoints of those at high redshift, and if the size-luminosity relation is not modified by dynamical processes, then this population of galaxies has undergone significant luminosity evolution since z = 1, consistent with expectations based on models of passively evolving old stellar populations. Subject headings: galaxies: evolution-galaxies: fundamental parameters
Retrieve 11 NED objects in this reference.
Please click here for ADS abstract

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