The inner mass distribution of late-type spiral galaxies fromSAURONstellar kinematic maps

Most studies of the mass distribution in spiral galaxies have been based on the observed rotation curves. A serious ambiguity in this approach has always been that the rotation curve contains in itself no information on the mass distribution in the direction perpendicular to the galactic plane. The usual assumption has been that the mass in late type galaxies is distributed as the light, namely outside the central bulge in a highly flattened disk. In recent years it has been found that the rotation curves decline little or not at all, indicating large increases in the local value of M/L with increasing galactocentric radius (e.g. Bosma and van der Kruit, 1979). On the basis of dynamical arguments involving stability it has been suspected that the material giving rise to the large values of M/L - the “dark matter” - is distributed in the halos of these galaxies, so that the assumption of a flat mass distribution would have to be wrong.

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AHubble Space TelescopeCensus of Nuclear Star Clusters in Late-Type Spiral Galaxies. II. Cluster Sizes and Structural Parameter Correlations

The Astronomical Journal ◽

10.1086/380231 ◽

2004 ◽

Vol 127 (1) ◽

pp. 105-118 ◽

Cited By ~ 161

Author(s):

Torsten Bker ◽

Marc Sarzi ◽

Dean E. McLaughlin ◽

Roeland P. van der Marel ◽

Hans-Walter Rix ◽

...

Keyword(s):

Spiral Galaxies ◽

Star Clusters ◽

Structural Parameter ◽

Late Type

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Hubble Sequence as a Temporal Evolution Sequence

Symposium - International Astronomical Union ◽

10.1017/s0074180900113555 ◽

1999 ◽

Vol 186 ◽

pp. 491-491

Author(s):

Xiaolei Zhang

Keyword(s):

Spiral Galaxies ◽

Temporal Evolution ◽

Natural Question ◽

Late Type ◽

Present Epoch ◽

Hubble Sequence ◽

Deep Survey ◽

Deep Fields ◽

The Universe ◽

Evolution Sequence

The results from Hubble Space Telescope's Medium Deep Survey and Deep Fields indicate that there exists far more blue spiral galaxies at the intermediate and high redshifts than at the present epoch. A natural question therefore is: what have become of these excess late type galaxies as the Universe aged?

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Mass Distribution in Compact Groups

International Astronomical Union Colloquium ◽

10.1017/s0252921100055317 ◽

2000 ◽

Vol 174 ◽

pp. 377-380 ◽

Cited By ~ 2

Author(s):

J. Perea ◽

A. del Olmo ◽

L. Verdes-Montenegro ◽

M. S. Yun ◽

W.K. Huchtmeier ◽

...

Keyword(s):

Compact Group ◽

Mass Distribution ◽

Spiral Galaxies ◽

Main Group ◽

Stable System ◽

Compact Groups ◽

Dark Halo ◽

Potential Well ◽

Redshift Surveys ◽

Satellite Galaxies

AbstractNew redshift surveys of galaxies in the field of compact groups have discovered a population of faint galaxies which act as satellites orbiting in the potential well of the bright group. Here we analyze the mass distribution of the groups by comparing the mass derived from the bright members and the mass obtained from the satellite galaxies. Our analysis indicates the presence of a dark halo around the main group with a mass roughly four times that measured for the dominant galaxies of the compact group.We found that heavier halos are ruled out by the observations when comparing the distribution of positions and redshifts of the satellite galaxies with the distribution of satellites of isolated spiral galaxies. The results agree with a picture where compact groups may form a stable system with galaxies moving in a common dark halo.

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Erratum: "Homogenization of the Stellar Population along Late-Type Spiral Galaxies" [[URL ADDRESS="/cgi-bin/resolve?2001AJ....122.1298G" STATUS="OKAY"]Astron. J.122, 1298 (2001)[/URL]]

The Astronomical Journal ◽

10.1086/344511 ◽

2002 ◽

Vol 124 (3) ◽

pp. 1825

Author(s):

D. A. Gadotti ◽

S. dos Anjos

Keyword(s):

Stellar Population ◽

Spiral Galaxies ◽

Late Type

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Near-infrared disk parameters in late-type spiral galaxies

The Astronomical Journal ◽

10.1086/114643 ◽

1988 ◽

Vol 95 ◽

pp. 408 ◽

Cited By ~ 11

Author(s):

C. Giovanardi ◽

L. K. Hunt

Keyword(s):

Near Infrared ◽

Spiral Galaxies ◽

Late Type

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Radio continuum observations of early- and late-type spiral galaxies

The Astrophysical Journal Supplement Series ◽

10.1086/191182 ◽

1987 ◽

Vol 63 ◽

pp. 771 ◽

Cited By ~ 13

Author(s):

Isabella M. Gioia ◽

Giuseppina Fabbiano

Keyword(s):

Spiral Galaxies ◽

Radio Continuum ◽

Late Type

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Differences in Mass Distribution for Field and Cluster Spiral Galaxies

Symposium - International Astronomical Union ◽

10.1017/s0074180900149885 ◽

1987 ◽

Vol 117 ◽

pp. 66-66 ◽

Cited By ~ 1

Author(s):

David Burstein ◽

Vera C. Rubin

Keyword(s):

Mass Distribution ◽

Classification Scheme ◽

Spiral Galaxies ◽

Three Dimensional ◽

Rotation Curves ◽

Mass Distributions ◽

Distribution Form ◽

Simple Classification ◽

Observational Fact

Our group has now obtained rotation curves for 80 spiral galaxies, Hubble types Sa through Sd. As described in Rubin et al. (Ap. J. 289, 81; 1985), the forms of these rotation curves are similar for all Hubble types. Given this observational fact, we have chosen to analyze the mass distributions for these galaxies under the assumption that the mass distributions for all spirals can be described by the same three-dimensional form, here taken to be spherical for simplicity. The mass distribution forms for 71 of these galaxies can be placed into a simple classification scheme based on the curvature of mass distribution form in a log(radius) - log (integral mass) diagram. The three most common mass forms among this continuum are termed Types I, II and III, the forms of which are displayed below (see also the discussion by Rubin elsewhere in this Symposium).

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