The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
A New Milky Way Dwarf Galaxy in Ursa Major
Open accessAbstract
In this Letter, we report the discovery of a new dwarf satellite to the Milky Way, located at (α 2000 , δ 2000 ) = (158 72, 51 92) in the constellation of Ursa Major. This object was detected as an overdensity of red, resolved stars in Sloan Digital Sky Survey data. The color-magnitude diagram of the Ursa Major dwarf looks remarkably similar to that of Sextans, the lowest surface brightness Milky Way companion known, but with approximately an order of magnitude fewer stars. Deeper follow-up imaging confirms that this object has an old and metal-poor stellar population and is ~100 kpc away. We roughly estimate M V = -6.75 and r 1/2 = 250 pc for this dwarf. Its luminosity is several times fainter than the faintest known Milky Way dwarf. However, its physical size is typical for dwarf spheroidal galaxies. Even though its absolute magnitude and size are presently quite uncertain, Ursa Major is likely the lowest luminosity and lowest surface brightness galaxy yet known.
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Cites
A Catalog of Parameters for Globular Clusters in the Milky Way
Harris, W. E. (1996) · The Astronomical Journal · doi:10.1086/118116 · Cited by 4,500 · cited 1×
“…half-light size of the Ursa Major dwarf is also quite similar to those of the known Milky Way dSphs, but is nearly an order of magnitude larger than those of either the largest Milky Way globular clusters (Harris 1996) or the newly discovered extended star clusters around M31 (Huxor et al. 2004).”
BackgroundThe Sloan Digital Sky Survey Photometric System
Fukugita, M., Ichikawa, T., Gunn, J. E., Doi, M., Shimasaku, K., & Schneider, D. P. (1996) · The Astronomical Journal · doi:10.1086/117915 · Cited by 3,033
The Sloan Digital Sky Survey Photometric Camera
Gunn, J. E., Carr, M., Rockosi, C., Sekiguchi, M., Berry, K., Elms, B., de Haas, E., Ivezić, Ž., Knapp, G., Lupton, R., et al. (1998) · The Astronomical Journal · doi:10.1086/300645 · Cited by 1,692
Astrometric Calibration of the Sloan Digital Sky Survey
Pier, J. R., Munn, J. A., Hindsley, R. B., Hennessy, G. S., Kent, S. M., Lupton, R. H., & Ivezić, Ž. (2003) · The Astronomical Journal · doi:10.1086/346138 · Cited by 908
Cited by
The Apache Point Observatory Galactic Evolution Experiment (APOGEE)
Majewski, S. R., Schiavon, R. P., Frinchaboy, P. M., Prieto, C. A., Barkhouser, R., Bizyaev, D., Blank, B., Brunner, S., Burton, A., Carrera, R., et al. (2017) · The Astronomical Journal · doi:10.3847/1538-3881/aa784d · Cited by 1,831
Self-citationGuo, Q., White, S., Boylan-Kolchin, M., De Lucia, G., Kauffmann, G., Lemson, G., Li, C., Springel, V., & Weinmann, S. (2011) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2010.18114.x · Cited by 1,205
Star-Formation Histories, Abundances, and Kinematics of Dwarf Galaxies in the Local Group
Tolstoy, E., Hill, V., & Tosi, M. (2009) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-082708-101650 · Cited by 1,179
Tracing Galaxy Formation with Stellar Halos. I. Methods
Bullock, J. S., & Johnston, K. V. (2005) · The Astrophysical Journal · doi:10.1086/497422 · Cited by 1,044
The Dark Energy Survey: more than dark energy – an overview
(2016) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stw641 · Cited by 1,019
Metadata
- Authors
- Willman, B., Dalcanton, J. J., Martinez-Delgado, D., West, A. A., Blanton, M. R., Hogg, D. W., Barentine, J. C., Brewington, H. J., Harvanek, M., Kleinman, S. J., Krzesinski, J., Long, D., Neilsen, Jr., Nitta, A., & Snedden, S. A.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2005-05-24
- Volume
- 626
- Issue
- 2
- Pages
- L85-L88
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2055645897
- Cited by
- 496
- References
- 4
- FWCI
- 22.84
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Willman, B., Dalcanton, J. J., Martinez-Delgado, D., West, A. A., Blanton, M. R., Hogg, D. W., Barentine, J. C., Brewington, H. J., Harvanek, M., Kleinman, S. J., Krzesinski, J., Long, D., Neilsen, Jr., Nitta, A., & Snedden, S. A. (2005). A New Milky Way Dwarf Galaxy in Ursa Major. The Astrophysical Journal. https://doi.org/10.1086/431760
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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