Deep Near Infrared Photometry of New Galactic Globular Clusters

Details Deep Near Infrared Photometry of New Galactic Globular Clusters Deep Near Infrared Photometry of New Galactic Globular Clusters

2000-09-22

arxiv.org/abs/astro-ph/0009374v1

Astronomy and Astrophysics

Astrophysics

accepted for publication in Astronomy & Astrophysics, 4 pages, 5 figures (for better quality images: http://highz.as.arizona.e

Scientific paper

We present a preliminary report on the first deep infrared photometry of 2MASS GC01 and 2MASS GC02 (GC01 and GC02 hereafter) - new Galactic globular cluster (GC) candidates, discovered by the 2MASS. They both appear to be genuine disk GCs though highly obscured. The location of the two GCs suggests that they are metal rich - [Fe/H]~-0.5. We estimated their distance and reddening using the K_s-band brightness of the red giant branch (RGB) bump, and J-K_s color of the RGB at M_K=-3 mag: D=3.1+/-0.5, 3.9+/-0.6 kpc, and A_V=20.9+/-0.7, 17.2+/-1.2 mag, for GC01 and GC02 respectively. Variation in the metal abundance can change our results within 30-35%.

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