Identifying high-metallicity m giants at intragroup distances with sloan digital sky survey

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

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

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 300kpc and 2Mpc, and are either the reddest intragroup candidates (M7-M10) or are L dwarfs at larger distances than previously detected.

Original languageEnglish (US)
Article number128
JournalAstronomical Journal
Volume143
Issue number6
DOIs
StatePublished - Jun 2012

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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