Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-12T16:02:25.140Z Has data issue: false hasContentIssue false
  • English
  • Français

Characterizing distant blue galaxies with HST images and Keck spectra

Published online by Cambridge University Press:  25 May 2016

Garth D. Illingworth
Garth D. Illingworth*
Affiliation:
UCO/Lick Observatory, University of California, Santa Cruz, CA 95064 USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Keck spectra and HST images have been used to derive characteristic velocity and length scales for an enigmatic component of the faint, blue, field galaxy population: the compact, narrow emission-line galaxies (CNELGs). These galaxies are very luminous, but have been found to be quite low mass systems (with typical masses ∼ 109 M⊙). Their blue colors and strong emission lines indicate that they are undergoing a major burst of star formation. Following the completion of their current burst they will fade, becoming, in the absence of further major bursts, objects very similar to contemporary spheroidal galaxies. With mean sizes Re ∼ 1.4 kpc and Gaussian velocity profiles with mean σ = 45 km s–1, the length scales and velocity widths of CNELGs are also quite consistent with the measured length scales and velocity widths of current spheroidals.

Type
High Redshift Galaxies
Information
Symposium - International Astronomical Union , Volume 171: New Light on Galaxy Evolution , 1996 , pp. 229 - 232
Copyright
Copyright © Kluwer 1996 

References

Guzmán, R., Koo, D. C., Faber, S. M., Illingworth, G. D., Kron, R. G., Takamiya, M., and Bershady, M. A. 1996, ApJL, submitted.Google Scholar
Koo, D. C., Bershady, M. A., Wirth, G. D., Stanford, S. A., and Majewski, S. R. 1994, ApJ, 427, L9.Google Scholar
Koo, D. C., Guzmán, R., Faber, S. M., Illingworth, G. D., Bershady, M. A., Kron, R. G., and Takamiya, M. 1995, ApJ, 440, L49.Google Scholar
Koo, D. C., and Kron, R. G. 1988, ApJ, 325, 92.Google Scholar
Salzer, J. J., MacAlpine, G. M., and Boroson, T. A. 1989, ApJS, 70, 447.CrossRefGoogle Scholar