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Date and Time of the Query: 2019-03-18 T15:14:14 PDT
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For refcode 1997ApJS..111..143B:
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Copyright by American Astronomical Society. Reproduced by permission
1997ApJS..111..143B FAUST Observations of Ultraviolet Sources toward the Virgo Cluster NOAH BROSCH, LILIANA FORMIGGINI, AND ELCHANAN ALMOZNINO The Wise Observatory and the School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel AND TIMOTHY SASSEEN, MICHAEL LAMPTON, AND STUART BOWYER Space Sciences Laboratory and Center for EUV Astrophysics, University of California, Berkeley, CA 94720 Received 1995 September 18; accepted 1997 January 16 ABSTRACT We analyze three UV images covering a ~100 square degree field toward the Virgo cluster, obtained by the FAUST space experiment. We detect 191 sources to a signal-to-noise ratio of 4.4 and identify 94% of them. Most sources have optical counterparts in existing catalogs, and about half are identified as galaxies. Some sources with no listed counterpart were observed at the Wise Observatory. We present the results of low- resolution visible spectrophotometry and discuss the foreground 101 stellar sources and the 76 detected galaxies, both in the cluster and in the foreground or background. We derive conclusions on star formation properties of galaxies and on the total UV flux from discrete and diffuse sources in the cluster. We test for the presence of intracluster dust, determine the clustering properties of UV emitting galaxies, and derive the UV luminosity function of Virgo galaxies. Subject headings: galaxies: clusters: individual (Virgo)-galaxies: fundamental parameters-ultraviolet: galaxies-ultraviolet: stars
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