Published June 2012
| Published
Journal Article
Open
Identifying High-metallicity M Giants at Intragroup Distances with Sloan Digital Sky Survey
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 2Mpc, and are either the reddest intragroup candidates (M7–M10) or are L dwarfs at larger distances than previously detected.
Additional Information
© 2012 The American Astronomical Society. Received 2011 July 18; accepted 2012 February 8; published 2012 April 30. We acknowledge Andreas Berlind for useful suggestions and for allowing us to borrow an SDSS footprint mask code. L.E.P. was supported by GAANN. K.H.B. acknowledges support from NSF Award AST-0847696. J.J.F. acknowledges support from NSF Award AST-0807873.Attached Files
Published - Palladino2012p18471Astron_J.pdf
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Palladino2012p18471Astron_J.pdf
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Additional details
- Eprint ID
- 31904
- Resolver ID
- CaltechAUTHORS:20120614-112455551
- AST-0847696
- NSF
- AST-0807873
- NSF
- Graduate Assistance in Areas of National Need (GAANN)
- Created
-
2012-06-18Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)