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

Palladino, Lauren E. and Holley-Bockelmann, Kelly and Morrison, Heather and Durrell, Patrick R. and Ciardullo, Robin and Feldmeier, John and Wade, Richard A. and Kirkpatrick, J. Davy and Lowrance, Patrick (2012) Identifying High-metallicity M Giants at Intragroup Distances with Sloan Digital Sky Survey. Astronomical Journal, 143 (6). Art. No. 128. ISSN 0004-6256. https://resolver.caltech.edu/CaltechAUTHORS:20120614-112455551

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0004-6256/143/6/128DOIArticle
ORCID:
AuthorORCID
Kirkpatrick, J. Davy0000-0003-4269-260X
Lowrance, Patrick0000-0001-8014-0270
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.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NSFAST-0847696
NSFAST-0807873
Graduate Assistance in Areas of National Need (GAANN)UNSPECIFIED
Subject Keywords:Galaxy: halo; Galaxy: stellar content; Local Group; stars: late-type
Issue or Number:6
Record Number:CaltechAUTHORS:20120614-112455551
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120614-112455551
Official Citation:Identifying High-metallicity M Giants at Intragroup Distances with Sloan Digital Sky Survey Lauren E. Palladino et al. 2012 The Astronomical Journal 143 128
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:31904
Collection:CaltechAUTHORS
Deposited By: Aucoeur Ngo
Deposited On:18 Jun 2012 14:56
Last Modified:26 Feb 2020 18:52

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