Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2011-10-26
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
Accepted to ApJ Letters
Scientific paper
We report the discovery of a new dwarf galaxy, Andromeda XXVIII, using data from the recently-released SDSS DR8. The galaxy is a likely satellite of Andromeda, and, at a separation of $365^{+17}_{-1}$ kpc, would be one of the most distant of Andromeda's satellites. Its heliocentric distance is $650^{+150}_{-80}$ kpc, and analysis of its structure and luminosity show that it has an absolute magnitude of $M_V = -8.5^{+0.4}_{-1.0}$ and half-light radius of $r_h = 210^{+60}_{-50}$ pc, similar to many other faint Local Group dwarfs. With presently-available imaging we are unable to determine if there is ongoing or recent star formation, which prevents us from classifying it as a dwarf spheroidal or dwarf irregular.
Bell Eric F.
Martin Nicolas F.
Slater Colin T.
No associations
LandOfFree
Andromeda XXVIII: A Dwarf Galaxy More Than 350 kpc from Andromeda does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Andromeda XXVIII: A Dwarf Galaxy More Than 350 kpc from Andromeda, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Andromeda XXVIII: A Dwarf Galaxy More Than 350 kpc from Andromeda will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-374458