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

Authors :
Patrick Lowrance
Lauren E. Palladino
Patrick R. Durrell
Robin Ciardullo
John J. Feldmeier
Heather L. Morrison
Richard A. Wade
Kelly Holley-Bockelmann
J. Davy Kirkpatrick
Publication Year :
2012
Publisher :
American Astronomical Society, 2012.

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.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....c3008faf19a07074d42723dc5b4a5da8