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

Astronomy

Research output: Contribution to journal › Article › peer-review

145 Scopus citations

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 (US)
Pages (from-to)	L83-L86
Journal	Astrophysical Journal
Volume	686
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/592962
State	Published - 2008

Keywords

Dwarf
Galaxies
Individual (Leo)
Local group

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/592962

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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)",

keywords = "Dwarf, Galaxies, Individual (Leo), Local group",

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 (US)",

volume = "686",

pages = "L83--L86",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2 PART 2",

}

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

N2 - 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)

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)

KW - Dwarf

KW - Galaxies

KW - Individual (Leo)

KW - Local group

UR - https://www.scopus.com/pages/publications/55849104595

UR - https://www.scopus.com/pages/publications/55849104595#tab=citedBy

U2 - 10.1086/592962

DO - 10.1086/592962

M3 - Article

AN - SCOPUS:55849104595

SN - 0004-637X

VL - 686

SP - L83-L86

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART 2

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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