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 WyseC. 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

^*Corresponding author for this work

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

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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
Pages (from-to)	L103-L106
Number of pages	4
Journal	The Astrophysical Journal
Volume	643
Issue number	2
DOIs	https://doi.org/10.1086/505216
Publication status	Published - 1 Jun 2006
Externally published	Yes

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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. The Astrophysical Journal, 643(2), L103-L106. https://doi.org/10.1086/505216

@article{7a9a6a969d6e426d9a1c8df9f7e19652,

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.\}",

year = "2006",

month = jun,

day = "1",

doi = "10.1086/505216",

language = "English",

volume = "643",

pages = "L103--L106",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

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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', The Astrophysical Journal, vol. 643, no. 2, 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.

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

U2 - 10.1086/505216

DO - 10.1086/505216

M3 - Article

AN - SCOPUS:33746902761

SN - 0004-637X

VL - 643

SP - L103-L106

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 2

ER -

A new milky way dwarf satellite in canes venatici

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