Exploring Halo Substructure with Giant Stars XI: The Tidal Tails of the Carina Dwarf Spheroidal and the Discovery of Magellanic Cloud Stars in the Carina Foreground

Ricardo munoz, Steven majewski, Simone Zaggia, William kunkel, Peter frinchaboy, David nidever, Denija Crnojevic, Richard patterson, Jeffrey crane, Kathryn johnston, Sangmo Tony Sohn, Rebecca Bernstein, Stephen Shectman

Research output: Contribution to journalArticlepeer-review

Abstract

A new large-area Washington M,T_2+DDO51 filter survey of more than 10 deg^2 around the Carina dSph galaxy reveals a spectroscopically confirmed power law radial density "break" population of Carina giant stars extending several degrees beyond the central King profile. Magellan telescope MIKE spectroscopy establishes the existence of Carina stars to at least 4.5 times its central King limiting radius, r_lim and primarily along Carina's major axis. To keep these stars bound to the dSph would require a global Carina mass-to-light ratio of M/L > 6,300 M/L_sun. The MIKE velocities, supplemented with ~950 additional Carina field velocities from archived VLT+GIRAFFE spectra with r
Original languageEnglish
Pages (from-to)201-223
Number of pages22
JournalAstrophysical Journal
Volume649
Issue number1
DOIs
Publication statusPublished - 3 May 2006

Keywords

  • astro-ph

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