A Spectroscopic Study of M31 dSphs - Kinematics, Chemical Abundances, and Radial Distributions in And I, II, III, X, and XIV

Details A Spectroscopic Study of M31 dSphs - Kinematics, Chemical Abundances, and Radial Distributions in And I, II, III, X, and XIV A Spectroscopic Study of M31 dSphs - Kinematics, Chemical Abundances, and Radial Distributions in And I, II, III, X, and XIV

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.2605k&link_type=abstract

American Astronomical Society, AAS Meeting #211, #26.05; Bulletin of the American Astronomical Society, Vol. 39, p.777

Astronomy and Astrophysics

Astronomy

Scientific paper

We present new results from a Keck/DEIMOS spectroscopic survey of the Andromeda dwarf spheroidal (dSph) galaxy system. Accurate radial velocities with uncertainties of a few km/s are derived for the bulk of the data set in each of And I, II, III, X, and XIV. We resolve the intrinsic velocity dispersion of each galaxy and place constraints on the mass-to-light ratios. The mean abundance, abundance spread, and radial variation in abundance and velocity are also investigated in detail. The evolutionary histories for these dSphs are discussed in relation to the Milky Way satellites.
This research is supported by NSF grant AST-0607852, NASA STScI grant GO-10816.08, and Hubble Fellowship grant HF-01185.01-A.

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