IDENTIFYING HIGH-METALLICITY M GIANTS AT INTRAGROUP DISTANCES WITH SLOAN DIGITAL SKY SURVEY

Journal Article · Fri Jun 15 00:00:00 EDT 2012 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/143/6/128· OSTI ID:22034455

Palladino, Lauren E; Holley-Bockelmann, Kelly ^[1]; Morrison, Heather ^[2]; Durrell, Patrick R; Feldmeier, John ^[3]; Ciardullo, Robin; Wade, Richard A ^[4]; Davy Kirkpatrick, J; Lowrance, Patrick ^[5]

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1. Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States)
2. Department of Astronomy, Case Western Reserve University, Cleveland, OH 44106 (United States)
3. Department of Physics and Astronomy, Youngstown State University, Youngstown, OH 44555 (United States)
4. Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States)
5. Infrared Processing and Analysis Center, MS 100-22, California Institute of Technology, Pasadena, CA 91125 (United States)

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.

• OSTI ID: 22034455
• Journal Information: Astronomical Journal (New York, N.Y. Online), Vol. 143, Issue 6; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASTRONOMY
ASTROPHYSICS
BLACK HOLES
COLOR
DISTANCE
GIANT STARS
METALS
MILKY WAY
THREE-BODY PROBLEM