Andromeda IX

Dwarf Spheroidal Galaxy Andromeda IX, type dSph, in Andromeda

RA:
00 : 52.9
Dec:
+ 43 : 12
Type:
dSph
RV:
Distance:
2,900 kly
Apparent Dimension:
5 arc min
Diameter:
Brightness:
16.2 mag vis
Abs. Mag:
Mass:
Discovered in 2004 by Zucker et.al.

Andromeda IX is a dwarf spheroidal satellite of the Andromeda Galaxy, M31; it was discovered in 2004 by resolved stellar photometry from the Sloan Digital Sky Survey (SDSS), by Zucker et.al. (2004). At the time of its discovery, it was the galaxy with the lowest known surface brightness, and the faintest galaxy known from its intrinsic absolute brightness.

Andromeda IX was found from data acquired within an SDSS scan along the major axis of M31, carried out on October 5, 2002. Its distance was estimated to be almost exactly the same as that of M31 by McConnacrchie et.al. (2005).

Links:

References


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Christine Kronberg
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Last Modification: February 13, 2005