Discovery of a stellar system in the background of 47 Tucanae

Details Discovery of a stellar system in the background of 47 Tucanae Discovery of a stellar system in the background of 47 Tucanae

2005-02-09

arxiv.org/abs/astro-ph/0502192v1

Astronomy and Astrophysics

Astrophysics

5 pages, 5 figures, accepted for publication in A&A

Scientific paper

We report on the discovery of a stellar system in the background of the Galactic globular cluster 47 Tucanae (NGC 104), located 14.8' North-West of the cluster center. The object, whose apparent diameter is D~30'', is partially resolved into stars on the available CCD images, reaching a limiting magnitude of V~22.5, and is detected as a significant (more than 5 sigma) overdensity of blue stars (B-V<0.7). The color magnitude diagram of the system, its characteristic projected size and its position in the sky suggest that it is an intermediate-old age cluster belonging to the Small Magellanic Cloud, whose outskirts lie in the background of 47 Tuc. Although less likely, the possibility that the object is an unknown dwarf galaxy in the outskirts of the Local Group cannot completely be ruled out by the present data.

Affiliated with

Also associated with

No associations

Rating

Discovery of a stellar system in the background of 47 Tucanae 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 Discovery of a stellar system in the background of 47 Tucanae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of a stellar system in the background of 47 Tucanae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-721917