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 language | English |
---|---|
Pages (from-to) | 201-223 |
Number of pages | 22 |
Journal | Astrophysical Journal |
Volume | 649 |
Issue number | 1 |
DOIs | |
Publication status | Published - 3 May 2006 |
Keywords / Materials (for Non-textual outputs)
- astro-ph