Leo v: a companion of a companion of the Milky Way galaxy?

V. Belokurov; M. G. Walker; N. W. Evans; D. C. Faria; G. Gilmore; M. J. Irwin; S. Koposov; M. Mateo; E. Olszewski; D. B. Zucker

doi:10.1086/592962

Leo v

a companion of a companion of the Milky Way galaxy?

V. Belokurov^*, M. G. Walker, N. W. Evans, D. C. Faria, G. Gilmore, M. J. Irwin, S. Koposov, M. Mateo, E. Olszewski, D. B. Zucker

^*Corresponding author for this work

Research output: Contribution to journal › Article

120 Citations (Scopus)

Abstract

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)

Original language	English
Pages (from-to)	L83-L86
Number of pages	4
Journal	Astrophysical Journal
Volume	686
Issue number	2
DOIs	https://doi.org/10.1086/592962
Publication status	Published - 2008
Externally published	Yes

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title = "Leo v: a companion of a companion of the Milky Way galaxy?",

abstract = "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)",

author = "V. Belokurov and Walker, {M. G.} and Evans, {N. W.} and Faria, {D. C.} and G. Gilmore and Irwin, {M. J.} and S. Koposov and M. Mateo and E. Olszewski and Zucker, {D. B.}",

year = "2008",

doi = "10.1086/592962",

language = "English",

volume = "686",

pages = "L83--L86",

journal = "Astrophysical Journal",

issn = "0004-637X",

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TY - JOUR

T1 - Leo v

T2 - a companion of a companion of the Milky Way galaxy?

AU - Belokurov, V.

AU - Walker, M. G.

AU - Evans, N. W.

AU - Faria, D. C.

AU - Gilmore, G.

AU - Irwin, M. J.

AU - Koposov, S.

AU - Mateo, M.

AU - Olszewski, E.

AU - Zucker, D. B.

PY - 2008

Y1 - 2008

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AB - 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)

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DO - 10.1086/592962

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