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Dark matter or tidal disruption? The case for the Leo I dSph

Published online by Cambridge University Press:  08 November 2005

S.T. Sohn ,
S.R. Majewski ,
J.C. Ostheimer ,
W.E. Kunkel ,
R.J. Patterson ,
M.H. Siegel ,
P. Guhathakurta  and
M. Cooper
S.T. Sohn
Affiliation:
Korea Astronomy and Space Science Institute, Daejeon 305-348, Korea email: tonysohn@kasi.re.kr Department of Astronomy, University of Virginia, Charlottesville, VA 22903
S.R. Majewski
Affiliation:
Department of Astronomy, University of Virginia, Charlottesville, VA 22903
J.C. Ostheimer
Affiliation:
Department of Astronomy, University of Virginia, Charlottesville, VA 22903
W.E. Kunkel
Affiliation:
Las Campanas Observatory, Casilla 601, La Serena, Chile
R.J. Patterson
Affiliation:
Department of Astronomy, University of Virginia, Charlottesville, VA 22903
M.H. Siegel
Affiliation:
Department of Astronomy, University of Virginia, Charlottesville, VA 22903 McDonald Observatory, University of Texas, Austin, TX 78712
P. Guhathakurta
Affiliation:
UCO/Lick Observatory, University of California at Santa Cruz, Santa Cruz, CA 95064
M. Cooper
Affiliation:
Department of Astronomy, University of California at Berkeley, Berkeley, CA 94720
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Abstract

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We present results from photometric and spectroscopic survey of giant stars in the Leo I dwarf spheroidal galaxy. We find compelling evidence that this galaxy has been tidally disrupted.

Keywords

Galaxy: halogalaxies: dwarfgalaxies: kinematics and dynamicsgalaxies: Local Group
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Colloquium C198: Near-Field Cosmology with Dwarf Elliptical Galaxies , March 2005 , pp. 263 - 264
Copyright
© 2005 International Astronomical Union