Globular Cluster Whiting 1 (WHI B0200-03),
Discovered by Whiting, Hau and Irwin in 2002.
- Distance from Sun:
- 98.1 kly
- Distance from Galactic Center:
- 112.5 kly
- Apparent Diameter:
- 1.2 arc min
- 15.03 mag vis
- Radial Velocity:
- -130.6 +/- 1.8 km/s
- Abs. Mag:
- -2.46 Mag vis
Identified as globular cluster by Giovanni Carraro in 2005.
During their hunt for new Local Group galaxies,
Whiting, Hau and Irwin (2002) discovered this
object and cataloged it as WHI B0200-03, as a suspected star cluster.
Based on CCD photometry in the BVI bands of the spectrum,
Carraro (2005) identified it as a compact star
cluster of low metallicity ([Fe/H]=-1.20) of approximate age of 5 billion
It is clearly a halo object, and definitely not an open cluster, but probably
one of the youngest globular clusters in the Milky Way's halo.
It was found that this cluster is probably a former member of the
Sagittarius Dwarf Elliptical Galaxy (SagDEG), or
Sagittarius Dwarf Spheroidal Galaxy (Sgr dSph), the nearby dwarf galaxy
discovered in 1994, which is currently in a close and perhaps final encounter
before its tidal disruption, with our
Milky Way Galaxy.
- Giovanni Carraro, 2005.
Whiting 1: A New Halo Young Globular Cluster.
Astrophysical Journal, Volume 621, Issue 1, pp. L61-L64 (03/2005)
[ADS: 2005ApJ...621L..61C] -
- Alan B. Whiting, G. K. T. Hau, and Mike Irwin,
The Southern Dwarf Hunt: Local Group Dwarf Candidates in the Southern Sky.
Astrophysical Journal Supplement Series, Volume 141, Issue 1, pp. 123-146
[ADS: 2002ApJS..141..123W] -
[MW Globulars] |