Dark matter;
Galaxies: internal motions;
Galaxies: photometry;
Galaxies: structure;
D O I:
10.1086/168739
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
The Tully-Fisher relation is used to probe dark matter (DM) in the optical regions of spiral galaxies. By establishing it at several different isophotal radii in an appropriate sample of 58 galaxies with good B-band photometry and rotation curves, we find that some of its attributes such as scatter, residuals, nonlinearity, and bias dramatically decrease moving from the disk edge inward. We show how this behavior challenges any mass model which assumes no DM or a luminosity-independent DM mass fraction interior to the optical radius of spiral galaxies.
机构:
Univ Cape Town, Dept Astron, Private Bag X3, ZA-7701 Rondebosch, South Africa
Aix Marseille Univ, CNRS, LAM, Lab Astrophys Marseille, Marseille, FranceUniv Cape Town, Dept Astron, Private Bag X3, ZA-7701 Rondebosch, South Africa
Korsaga, M.
Carignan, C.
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机构:
Univ Cape Town, Dept Astron, Private Bag X3, ZA-7701 Rondebosch, South Africa
Univ Ouagadougou, Observatoire Astrophys, BP 7021, Ouagadougou 03, Burkina FasoUniv Cape Town, Dept Astron, Private Bag X3, ZA-7701 Rondebosch, South Africa
Carignan, C.
Amram, P.
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机构:
Aix Marseille Univ, CNRS, LAM, Lab Astrophys Marseille, Marseille, FranceUniv Cape Town, Dept Astron, Private Bag X3, ZA-7701 Rondebosch, South Africa
机构:
Univ Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA
Univ Arkansas, Arkansas Ctr Space & Planetary Sci, Fayetteville, AR 72701 USAUniv Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA
Treuthardt, Patrick
Seigar, Marc S.
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h-index: 0
机构:
Univ Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA
Univ Arkansas, Arkansas Ctr Space & Planetary Sci, Fayetteville, AR 72701 USAUniv Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA
Seigar, Marc S.
Sierra, Amber D.
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机构:
Univ Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USAUniv Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA
Sierra, Amber D.
Al-Baidhany, Ismaeel
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机构:
Univ Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USAUniv Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA
Al-Baidhany, Ismaeel
Salo, Heikki
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机构:
Univ Oulu, Div Astron, Dept Phys Sci, FIN-90014 Oulu, FinlandUniv Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA
Salo, Heikki
Kennefick, Daniel
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机构:
Univ Arkansas, Arkansas Ctr Space & Planetary Sci, Fayetteville, AR 72701 USA
Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USAUniv Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA
Kennefick, Daniel
Kennefick, Julia
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h-index: 0
机构:
Univ Arkansas, Arkansas Ctr Space & Planetary Sci, Fayetteville, AR 72701 USA
Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USAUniv Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA
Kennefick, Julia
Lacy, Claud H. S.
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h-index: 0
机构:
Univ Arkansas, Arkansas Ctr Space & Planetary Sci, Fayetteville, AR 72701 USA
Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USAUniv Arkansas, Dept Phys & Astron, Little Rock, AR 72204 USA