FAUST observations of ultraviolet sources in the direction of Coma

被引:9
作者
Brosch, N [1 ]
Ofek, EO
Almoznino, E
Sasseen, T
Lampton, M
Bowyer, S
机构
[1] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Wise Observ, IL-69978 Tel Aviv, Israel
[2] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys & Astron, IL-69978 Tel Aviv, Israel
[3] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93110 USA
[4] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
[5] Univ Calif Berkeley, Ctr Euv Astrophys, Berkeley, CA 94720 USA
关键词
white dwarfs; open clusters and associations; individual; Coma Berenices; galaxies; clusters; Coma; ultraviolet; stars;
D O I
10.1046/j.1365-8711.1998.01365.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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.
引用
收藏
页码:959 / 969
页数:11
相关论文
共 57 条
[1]  
ACKER A, 1985, ASTRON ASTROPHYS, V151, P613
[2]  
Andreon S, 1996, ASTRON ASTROPHYS, V314, P763
[3]  
ARP H, 1966, ATLAS PECULIAR GALAX
[4]  
BIVIANO A, 1995, ASTRON ASTROPHYS, V297, P610
[5]   WHITE-DWARF STANDARD STARS - G191-B2B, GD-71, GD-153, HZ-43 [J].
BOHLIN, RC ;
COLINA, L ;
FINLEY, DS .
ASTRONOMICAL JOURNAL, 1995, 110 (03) :1316-1325
[6]  
BOUNATIRO L, 1993, ASTRON ASTROPHYS SUP, V100, P531
[7]   IN-FLIGHT PERFORMANCE AND PRELIMINARY-RESULTS FROM THE FAR-ULTRAVIOLET SPACE TELESCOPE (FAUST) FLOWN ON ATLAS-1 [J].
BOWYER, S ;
SASSEEN, TP ;
LAMPTON, M ;
WU, XY .
ASTROPHYSICAL JOURNAL, 1993, 415 (02) :875-881
[8]   A CATALOG OF FAR-ULTRAVIOLET POINT SOURCES DETECTED WITH THE FAUST TELESCOPE ON ATLAS-1 [J].
BOWYER, S ;
SASSEEN, TP ;
WU, XY ;
LAMPTON, M .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1995, 96 (02) :461-544
[9]   A MODEL OF THE GALAXY IN THE ULTRAVIOLET [J].
BROSCH, N .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1991, 250 (04) :780-785
[10]   A STUDY OF ULTRAVIOLET OBJECTS NEAR THE NORTH GALACTIC POLE WITH FAUST [J].
BROSCH, N ;
ALMOZNINO, E ;
LEIBOWITZ, EM ;
NETZER, H ;
SASSEEN, TP ;
BOWYER, S ;
LAMPTON, M ;
WU, X .
ASTROPHYSICAL JOURNAL, 1995, 450 (01) :137-148