FAUST observations of ultraviolet sources in the direction of Coma |
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| Authors: | Noah Brosch Eran O Ofek Elhanan Almoznino Timothy Sasseen Michael Lampton & Stuart Bowyer |
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| Institution: | 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,;Department of Physics, University of California at Santa Barbara, Santa Barbara CA 93110, USA,;Space Sciences Laboratory and Center for EUV Astrophysics, University of California, Berkeley CA 94720, USA |
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| Abstract: | We analyse an ultraviolet observation toward the Coma cluster by means of the FAUST shuttle-borne telescope. We detect 56 candidate sources to a signal-to-noise ratio of 6.5. Most sources have optical counterparts in existing catalogues and are stars. 10 sources with no listed counterparts were observed at the Wise Observatory. We present identifications based on low-resolution spectrophotometry, and discuss the foreground stars and the galaxies, all in the foreground of the Coma cluster. The FAUST image yields a higher fraction of hot evolved stars than either of the North Galactic Pole or the Virgo regions, analysed previously. We identify these tentatively as cooling white dwarfs in the Coma Berenices (Mel 111) open cluster. |
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| Keywords: | white dwarfs open clusters and associations: individual: Coma Berenices galaxies: clusters: individual: Coma ultraviolet: stars |
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