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

138 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

Access to Document

10.1086/592962

Cite this

@article{2772f18cab4049a49129111ecf2c6f2b,

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 - http://www.scopus.com/inward/record.url?scp=55849104595&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=55849104595&partnerID=8YFLogxK

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

Access to Document

Other files and links

Fingerprint

Cite this