Multiband photometry of rich Abell clusters: Constraints on the dwarf star content of dark matter

被引:4
作者
Boughn, SP
Uson, JM
机构
[1] INST ADV STUDY, PRINCETON, NJ 08540 USA
[2] ASSOC UNIV INC, NATL SCI FDN, NATL RADIO ASTRON OBSERV, CHARLOTTESVILLE, VA 22903 USA
关键词
dark matter; galaxies; clusters; general; photometry; stellar content; stars; late-type;
D O I
10.1086/304662
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present results of large-aperture (similar to 1') JK photometry and CCD BVRI photometry near the centers of three distant (0.11 less than or equal to z less than or equal to 0.22), rich Abell clusters of galaxies. The colors of the integrated light are consistent with those of nearby E and SO galaxies. The absence of anomalous reddening implies that no more than 2 h(-1)% (1 sigma limit) of the dark matter in these clusters can be in the form of low-mass (similar to 0.1 M.) subdwarfs or old disk dwarfs. The limit increases to 3 h(-1)% if expressed in terms of zero-metallicity dwarfs. These results constrain the mass function of baryonic objects which might contribute to the dark matter.
引用
收藏
页码:44 / 54
页数:11
相关论文
共 56 条
[1]   THE INFRARED COLOR-MAGNITUDE RELATION FOR EARLY-TYPE GALAXIES IN VIRGO AND COMA [J].
AARONSON, M ;
PERSSON, SE ;
FROGEL, JA .
ASTROPHYSICAL JOURNAL, 1981, 245 (01) :18-24
[2]  
AARONSON M, 1977, THESIS HARVARD U
[6]  
Baraffe I, 1996, ASTROPHYS J, V461, pL51, DOI 10.1086/309988
[7]   GALAXY CLUSTERS WITH MULTIPLE COMPONENTS .2. ABELL-115 [J].
BEERS, TC ;
HUCHRA, JP ;
GELLER, MJ .
ASTROPHYSICAL JOURNAL, 1983, 264 (02) :356-363
[8]   THE LATE-M DWARFS [J].
BESSELL, MS .
ASTRONOMICAL JOURNAL, 1991, 101 (02) :662-676
[9]   CONSTRAINTS ON THE DWARF STAR CONTENT OF DARK-MATTER (VOL 74, PG 216, 1995) [J].
BOUGHN, SP ;
USON, JM .
PHYSICAL REVIEW LETTERS, 1995, 74 (16) :3304-3304
[10]   INFRARED PHOTOMETRY OF THE HALO OF M87 [J].
BOUGHN, SP ;
SAULSON, PR .
ASTROPHYSICAL JOURNAL, 1983, 265 (02) :L55-L59