A new milky way dwarf satellite in canes venatici

D. B. Zucker; V. Belokurov; N. W. Evans; M. I. Wilkinson; M. J. Irwin; T. Sivarani; S. Hodgkin; D. M. Bramich; J. M. Irwin; G. Gilmore; B. Willman; S. Vidrih; M. Fellhauer; P. C. Hewett; T. C. Beers; E. F. Bell; E. K. Grebel; D. P. Schneider; H. J. Newberg; R. F.G. Wyse; C. M. Rockosi; B. Yanny; R. Lupton; J. A. Smith; J. C. Barentine; H. Brewington; J. Brinkmann; M. Harvanek; S. J. Kleinman; J. Krzesinski; D. Long; A. Nitta; S. A. Snedden

doi:10.1086/505216

A new milky way dwarf satellite in canes venatici

D. B. Zucker
, V. Belokurov
, N. W. Evans
, M. I. Wilkinson
, M. J. Irwin
, T. Sivarani
, S. Hodgkin
, D. M. Bramich
, J. M. Irwin
, G. Gilmore
, B. Willman
, S. Vidrih
, M. Fellhauer
, P. C. Hewett
, T. C. Beers
, E. F. Bell
, E. K. Grebel
, D. P. Schneider
, H. J. Newberg
, R. F.G. Wyse

C. M. Rockosi, B. Yanny, R. Lupton, J. A. Smith, J. C. Barentine, H. Brewington, J. Brinkmann, M. Harvanek, S. J. Kleinman, J. Krzesinski, D. Long, A. Nitta, S. A. Snedden

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323 Scopus citations

Abstract

In this Letter, we announce the discovery of a new dwarf satellite of the Milky Way, located in the constellation Canes Venatici. It was found as a stellar overdensity in the north Galactic cap using Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The satellite's color-magnitude diagram shows a well-defined red giant branch as well as a horizontal branch. As judged from the tip of the red giant branch, it lies at a distance of ∼220 kpc. Based on the SDSS data, we estimate an absolute magnitude of M_v ∼ -7.9, a central surface brightness of μ_0,v ∼ 28 mag arcsec ^-2, and a half-light radius of ∼8′.!5 (∼550 pc at the measured distance). The outer regions of Canes Venatici appear extended and distorted. The discovery of such a faint galaxy in proximity to the Milky Way strongly suggests that more such objects remain to be found.

Original language	English (US)
Pages (from-to)	L103-L106
Journal	Astrophysical Journal
Volume	643
Issue number	2 II
DOIs	https://doi.org/10.1086/505216
State	Published - Jun 1 2006

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/505216

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Zucker, D. B., Belokurov, V., Evans, N. W., Wilkinson, M. I., Irwin, M. J., Sivarani, T., Hodgkin, S., Bramich, D. M., Irwin, J. M., Gilmore, G., Willman, B., Vidrih, S., Fellhauer, M., Hewett, P. C., Beers, T. C., Bell, E. F., Grebel, E. K., Schneider, D. P., Newberg, H. J., ... Snedden, S. A. (2006). A new milky way dwarf satellite in canes venatici. Astrophysical Journal, 643(2 II), L103-L106. https://doi.org/10.1086/505216

@article{a869f8af0f0b4f71b3f31da78bf3e334,

title = "A new milky way dwarf satellite in canes venatici",

abstract = "In this Letter, we announce the discovery of a new dwarf satellite of the Milky Way, located in the constellation Canes Venatici. It was found as a stellar overdensity in the north Galactic cap using Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The satellite's color-magnitude diagram shows a well-defined red giant branch as well as a horizontal branch. As judged from the tip of the red giant branch, it lies at a distance of ∼220 kpc. Based on the SDSS data, we estimate an absolute magnitude of Mv ∼ -7.9, a central surface brightness of μ0,v ∼ 28 mag arcsec -2, and a half-light radius of ∼8′.!5 (∼550 pc at the measured distance). The outer regions of Canes Venatici appear extended and distorted. The discovery of such a faint galaxy in proximity to the Milky Way strongly suggests that more such objects remain to be found.",

author = "Zucker, \{D. B.\} and V. Belokurov and Evans, \{N. W.\} and Wilkinson, \{M. I.\} and Irwin, \{M. J.\} and T. Sivarani and S. Hodgkin and Bramich, \{D. M.\} and Irwin, \{J. M.\} and G. Gilmore and B. Willman and S. Vidrih and M. Fellhauer and Hewett, \{P. C.\} and Beers, \{T. C.\} and Bell, \{E. F.\} and Grebel, \{E. K.\} and Schneider, \{D. P.\} and Newberg, \{H. J.\} and Wyse, \{R. F.G.\} and Rockosi, \{C. M.\} and B. Yanny and R. Lupton and Smith, \{J. A.\} and Barentine, \{J. C.\} and H. Brewington and J. Brinkmann and M. Harvanek and Kleinman, \{S. J.\} and J. Krzesinski and D. Long and A. Nitta and Snedden, \{S. A.\}",

note = "Funding Information: D. B. Z., V. B., M. I. W., D. M. B., and M. F. acknowledge the financial support of the Particle Physics and Astronomy Research Council of the United Kingdom. Funding Information: Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the US Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England.15",

year = "2006",

month = jun,

day = "1",

doi = "10.1086/505216",

language = "English (US)",

volume = "643",

pages = "L103--L106",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2 II",

}

Zucker, DB, Belokurov, V, Evans, NW, Wilkinson, MI, Irwin, MJ, Sivarani, T, Hodgkin, S, Bramich, DM, Irwin, JM, Gilmore, G, Willman, B, Vidrih, S, Fellhauer, M, Hewett, PC, Beers, TC, Bell, EF, Grebel, EK, Schneider, DP, Newberg, HJ, Wyse, RFG, Rockosi, CM, Yanny, B, Lupton, R, Smith, JA, Barentine, JC, Brewington, H, Brinkmann, J, Harvanek, M, Kleinman, SJ, Krzesinski, J, Long, D, Nitta, A & Snedden, SA 2006, 'A new milky way dwarf satellite in canes venatici', Astrophysical Journal, vol. 643, no. 2 II, pp. L103-L106. https://doi.org/10.1086/505216

TY - JOUR

T1 - A new milky way dwarf satellite in canes venatici

AU - Zucker, D. B.

AU - Belokurov, V.

AU - Evans, N. W.

AU - Wilkinson, M. I.

AU - Irwin, M. J.

AU - Sivarani, T.

AU - Hodgkin, S.

AU - Bramich, D. M.

AU - Irwin, J. M.

AU - Gilmore, G.

AU - Willman, B.

AU - Vidrih, S.

AU - Fellhauer, M.

AU - Hewett, P. C.

AU - Beers, T. C.

AU - Bell, E. F.

AU - Grebel, E. K.

AU - Schneider, D. P.

AU - Newberg, H. J.

AU - Wyse, R. F.G.

AU - Rockosi, C. M.

AU - Yanny, B.

AU - Lupton, R.

AU - Smith, J. A.

AU - Barentine, J. C.

AU - Brewington, H.

AU - Brinkmann, J.

AU - Harvanek, M.

AU - Kleinman, S. J.

AU - Krzesinski, J.

AU - Long, D.

AU - Nitta, A.

AU - Snedden, S. A.

N1 - Funding Information: D. B. Z., V. B., M. I. W., D. M. B., and M. F. acknowledge the financial support of the Particle Physics and Astronomy Research Council of the United Kingdom. Funding Information: Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the US Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England.15

PY - 2006/6/1

Y1 - 2006/6/1

N2 - In this Letter, we announce the discovery of a new dwarf satellite of the Milky Way, located in the constellation Canes Venatici. It was found as a stellar overdensity in the north Galactic cap using Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The satellite's color-magnitude diagram shows a well-defined red giant branch as well as a horizontal branch. As judged from the tip of the red giant branch, it lies at a distance of ∼220 kpc. Based on the SDSS data, we estimate an absolute magnitude of Mv ∼ -7.9, a central surface brightness of μ0,v ∼ 28 mag arcsec -2, and a half-light radius of ∼8′.!5 (∼550 pc at the measured distance). The outer regions of Canes Venatici appear extended and distorted. The discovery of such a faint galaxy in proximity to the Milky Way strongly suggests that more such objects remain to be found.

AB - In this Letter, we announce the discovery of a new dwarf satellite of the Milky Way, located in the constellation Canes Venatici. It was found as a stellar overdensity in the north Galactic cap using Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The satellite's color-magnitude diagram shows a well-defined red giant branch as well as a horizontal branch. As judged from the tip of the red giant branch, it lies at a distance of ∼220 kpc. Based on the SDSS data, we estimate an absolute magnitude of Mv ∼ -7.9, a central surface brightness of μ0,v ∼ 28 mag arcsec -2, and a half-light radius of ∼8′.!5 (∼550 pc at the measured distance). The outer regions of Canes Venatici appear extended and distorted. The discovery of such a faint galaxy in proximity to the Milky Way strongly suggests that more such objects remain to be found.

UR - https://www.scopus.com/pages/publications/33746902761

UR - https://www.scopus.com/pages/publications/33746902761#tab=citedBy

U2 - 10.1086/505216

DO - 10.1086/505216

M3 - Article

AN - SCOPUS:33746902761

SN - 0004-637X

VL - 643

SP - L103-L106

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 II

ER -

A new milky way dwarf satellite in canes venatici

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