An ultraviolet-selected galaxy redshift survey -- II. The physical nature of star formation in an enlarged sample
Abstract
We present further spectroscopic observations for a sample of galaxies selected in the vacuum ultraviolet (UV) at 2000 Å from the FOCA balloon-borne imaging camera of Milliard et al. This work represents an extension of the initial study by Treyer et al. Our enlarged catalogue contains 433 sources (≃3 times as many as in our earlier study) across two FOCA fields. 273 of these are galaxies, nearly all with redshifts z≃0–0.4. Nebular emission-line measurements are available for 216 galaxies, allowing us to address issues of excitation, reddening and metallicity. The UV and Hα luminosity functions strengthen our earlier assertions that the local volume-averaged star formation rate is higher than indicated from earlier surveys. Moreover, internally within our sample, we do not find a steep rise in the UV luminosity density with redshift over 0
Additional Information
© 2000 RAS. Received: 22 September 1999. Accepted: 01 October 1999. Published: 21 February 2000. We thank the anonymous referee for detailed comments which improved this manuscript. We also thank Chris Blake, Veronique Buat, Lawrence Cram, Gerhardt Meurer, Bianca Poggianti, and especially Max Pettini for their many helpful discussions in preparing this paper. We are also grateful for the assistance provided by the La Palma support staff in securing the optical spectra. The WIYN Observatory is a joint facility of the University of Wisconsin-Madison, Indiana University, Yale University, and the National Optical Astronomy Observatories. The William Herschel Telescope is operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias.Attached Files
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- CaltechAUTHORS:20200526-104631323
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2020-05-27Created from EPrint's datestamp field
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2021-11-16Created from EPrint's last_modified field