Large-aperture BVRJK photometry of rich Abell clusters : constraints on dark matter

This paper presents results of large (arcmin), single-aperture JK photometry and CCD BVR photometry on and near the centers of distant (Z between values of 0.14 and 0.20), rich Abell clusters. The colors of the integrated light of the cores of these clusters are consistent with those of nearby E and...

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Bibliographic Details
Published inThe Astrophysical journal Vol. 369; no. 1; pp. 38 - 45
Main Authors USON, J. M, BOUGHN, S. P
Format Journal Article
LanguageEnglish
Published Chicago, IL University of Chicago Press 01.03.1991
Subjects
640105 - Astrophysics & Cosmology- Galaxies
Astronomy
BASIC INTERACTIONS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COLOR
DISTRIBUTION
Earth, ocean, space
Exact sciences and technology
GALAXIES
GALAXY CLUSTERS
Galaxy groups, clusters, and superclusters. Large-scale structure of the universe
GRAVITATION
GRAVITATIONAL INTERACTIONS
INTERACTIONS
LIMITING VALUES
MASS
NONLUMINOUS MATTER
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
SPATIAL DISTRIBUTION
Stellar systems. Galactic and extragalactic objects and systems. The universe
Photometric observation
Galaxies cluster
Dark matter
Mass to light ratio
Color
CCD photometry
Cosmology
Two color diagram
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Summary:This paper presents results of large (arcmin), single-aperture JK photometry and CCD BVR photometry on and near the centers of distant (Z between values of 0.14 and 0.20), rich Abell clusters. The colors of the integrated light of the cores of these clusters are consistent with those of nearby E and S0 galaxies. The absence of anomalous infrared emission provides the strongest constraint to date on the possible stellar make-up of the dark matter in clusters of galaxies, requiring K band (2.2 microns) mass-to-light ratios of the dark matter of (M/L)K not less than 400h. Indeed, no more than 5/h percent of the dark mass can be made of objects with mass greater than 0.1 solar mass. Although these results do not require a contribution of nonbaryonic matter, they provide some constraints on the mass function for baryonic objects which might compose the dark matter. These conclusions do not depend on the detailed distribution of the dark matter in the clusters. 35 refs.
ISSN:0004-637X
1538-4357
DOI:10.1086/169736