Andromeda XXIX: A New Dwarf Spheroidal Galaxy 200 kpc from Andromeda
dc.contributor.author | Bell, Eric F. | en_US |
dc.contributor.author | Slater, Colin T. | en_US |
dc.contributor.author | Martin, Nicolas F. | en_US |
dc.date.accessioned | 2012-04-06T20:56:45Z | |
dc.date.available | 2012-04-06T20:56:45Z | |
dc.date.issued | 2011 | en_US |
dc.identifier.citation | Bell, Eric F.; Slater, Colin T.; Martin, Nicolas F. (2011). "Andromeda XXIX: A New Dwarf Spheroidal Galaxy 200 kpc from Andromeda." The Astrophysical Journal Letters, vol. 742, 1, L15. <http://hdl.handle.net/2027.42/90744> | en_US |
dc.identifier.uri | http://stacks.iop.org/2041-8205/742/i=1/a=L15 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/90744 | |
dc.description.abstract | We report the discovery of a new dwarf galaxy, Andromeda XXIX (And XXIX), using data from the recently released Sloan Digital Sky Survey Data Release 8, and confirmed by Gemini North telescope Multi-Object Spectrograph imaging data. And XXIX appears to be a dwarf spheroidal galaxy, separated on the sky by a little more than 15° from M31, with a distance inferred from the tip of the red giant branch of 730 ± 75 kpc, corresponding to a three-dimensional separation from M31 of 207 +20 – 2 kpc (close to M31's virial radius). Its absolute magnitude, as determined by comparison to the red giant branch luminosity function of the Draco dwarf spheroidal, is M V = –8.3 ± 0.4. And XXIX's stellar populations appear very similar to Draco's; consequently, we estimate a metallicity for And XXIX of [Fe/H] ~–1.8. The half-light radius of And XXIX is 360 ± 60 pc and its ellipticity is 0.35 ± 0.06, typical of dwarf satellites of the Milky Way and M31 at this absolute magnitude range. | en_US |
dc.publisher | IOP Publishing | en_US |
dc.title | Andromeda XXIX: A New Dwarf Spheroidal Galaxy 200 kpc from Andromeda | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/90744/1/2041-8205_742_1_L15.pdf | |
dc.identifier.doi | 10.1088/2041-8205-742-1-L15 | en_US |
dc.identifier.source | The Astrophysical Journal Letters | en_US |
dc.owningcollname | Physics, Department of |
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