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Distant Compact Narrow Emission Line Galaxies as Progenitors of Today’s Spheroidal Galaxies

Published online by Cambridge University Press:  14 August 2015

David C. Koo  and
Rafael Guzmán
David C. Koo
Affiliation:
UCO/Lick Observatory, University of California, Santa Cruz, CA 95061, USA
Rafael Guzmán
Affiliation:
UCO/Lick Observatory, University of California, Santa Cruz, CA 95061, USA

Extract

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Dwarf galaxies at high redshifts are important to study for a variety of reasons. By dwarf, we mean galaxies with low-mass, though galaxies with low-luminosities or small sizes are also commonly referred to as dwarfs. Several groups have suggested that such galaxies may be major contributors to faint blue galaxies, whose nature remains unclear. Dwarfs are viable candidates for faint blue galaxies if many undergo strong bursts of star-formation at redshifts z ~ 1 (Babul and Ferguson 1996) or even lower redshifts z ~ 0.3 (Cowie, Songaila, and Hu 1991; Broadhurst et al. 1988) and fade or disappear by today; if they have a much steeper luminosity function (Driver et al. 1994) than generally adopted in faint galaxy models; or if they represent small pre-merger fragments of larger galaxies today (Guiderdoni and Rocca-Volmerange 1990; Broadhurst, Ellis, and Glazebrook 1992), as might be expected in standard cold dark matter models with hierarchical galaxy formation.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 11 , Issue 1: Highlights of Astronomy. As presented at the XXIIIrd General Assembly of the IAU (Part A), 1997 , 1998 , pp. 145 - 146
Copyright
Copyright © Kluwer 1998

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