Identifying High-metallicity M Giants at Intragroup Distances with Sloan Digital Sky Survey

June 2012 • 2012AJ....143..128P

Authors • Palladino, Lauren E. • Holley-Bockelmann, Kelly • Morrison, Heather • Durrell, Patrick R. • Ciardullo, Robin • Feldmeier, John • Wade, Richard A. • Kirkpatrick, J. Davy • Lowrance, Patrick

Abstract • Tidal stripping and three-body interactions with the central supermassive black hole may eject stars from the Milky Way. These stars would comprise a set of "intragroup" stars that trace the past history of interactions in our galactic neighborhood. Using the Sloan Digital Sky Survey DR7, we identify candidate solar-metallicity red giant intragroup stars using color cuts that are designed to exclude nearby M and L dwarfs. We present 677 intragroup candidates that are selected between 300 kpc and 2 Mpc, and are either the reddest intragroup candidates (M7-M10) or are L dwarfs at larger distances than previously detected.

Links

• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2012AJ....143..128P
• PDF https://iopscience.iop.org/article/10.1088/0004-6256/143/6/128/pdf
• PDF https://stacks.iop.org/1538-3881/143/128/pdf
• PREPRINT http://arxiv.org/abs/1202.2152
• DATA http://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/143/128
• DATA https://irsa.ipac.caltech.edu/bibdata/2012/P/2012AJ....143..128P.html
• ELECTR https://doi.org/10.1088%2F0004-6256%2F143%2F6%2F128