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Phoenix Dwarf Galaxy Stellar Kinematics

  • M. Koleva, Ph. Prugniel, I. Vauglin, S. Zaggia (a1), E.V. Held (a1), V. Sommariva (a1), Y. Momany (a1) (a2), I. Saviane (a2) and L. Rizzi (a3)...

Abstract

The Phoenix dwarf galaxy is the nearest and most typical representative of the class of the so-called transition dwarf galaxies (from spheroidal to irregular). We present here precise velocity measurements obtained from high-resolution spectroscopy of more than one hundred member stars, allowing us to study the stellar kinematics and estimate the internal velocity dispersion and dark matter content.

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[1]1Held, E.V., Saviane, I., & Momany, Y., 1999, A&A, 345, 747
[2]2Hidalgo, S.L., Aparicio, A., Martínez-Delgado, D., & Gallart, C., 2009, ApJ, 705, 704
[3]3Massey, P., et al., 2007, AJ, 133, 2393
[4]4Walker, M.G., et al., 2010, ApJ, 717, L87

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