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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 421760.0, MPI für Astronomie / Publikationen_mpia
Leo V: a companion of a companion of the Milky Way Galaxy?
Authors:Belokurov, V.; Walker, M. G.; Evans, N. W.; Faria, D. C.; Gilmore, G.; Irwin, M. J.; Koposov, S.; Mateo, M.; Olszewski, E.; Zucker, D. B.
Language:English
Date of Publication (YYYY-MM-DD):2008
Title of Journal:The Astrophysical Journal
Journal Abbrev.:ApJ
Volume:686
Start Page:L83
End Page:L86
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We report the discovery of a new Milky Way satellite in the constellation Leo, identified in data from the Sloan Digital Sky Survey. It lies at a distance of ~180 kpc, and is separated by <~3° from another recent discovery, Leo IV. We present follow-up imaging from the Isaac Newton Telescope and spectroscopy from the Hectochelle fiber spectrograph at the Multiple Mirror Telescope. Leo V's heliocentric velocity is ~173.3 +/- 3.1 km s-1, offset by ~40 km s-1 from that of Leo IV. A simple interpretation of the kinematic data is that both objects may lie on the same stream, although the implied orbit is only modestly eccentric (e~0.2)
Free Keywords:Galaxies: Dwarf; galaxies: individual (Leo); Galaxies: Local Group
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2008ApJ...686L..83B [ID No:1]
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