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Astrophysics

Title: Tracing the Sgr Stream with 2MASS. Detection of Stream stars around Outer Halo Globular Clusters

Authors: M. Bellazzini (INAF- OA Bologna), R. Ibata (Obs. Strasbourg), F.R. Ferraro (Univ. Bologna), V. Testa (INAF- OA Roma)
Abstract: We use infrared Color Magnitude Diagrams from the 2-Micron All-Sky Survey (2MASS) to search for stars belonging to the tidal stream of the Sagittarius dwarf spheroidal galaxy (Sgr dSph) around selected Galactic globular clusters. Statistically significant detections are presented for the cases of Pal 12 and NGC 4147, strongly supporting the idea that these clusters are associated with the Sgr Stream and that they were previous members of the Sgr dSph galaxy.
Comments: Latex, 7 pages, 6 low res. .ps figures. Accepted by Astronomy & Astrophysics
Subjects: Astrophysics (astro-ph)
Journal reference: Astron.Astrophys. 405 (2003) 577-584
Cite as: arXiv:astro-ph/0304502v1

Submission history

From: Michele Bellazzini [view email]
[v1] Mon, 28 Apr 2003 14:08:51 GMT (324kb)