SETI bioastro: FSR1735 -- A new globular cluster candidate in the inner Galaxy

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Astrophysics, abstract
astro-ph/0703318

From: Dirk Froebrich [view email]

Date: Tue, 13 Mar 2007 15:17:31 GMT (306kb)

FSR1735 -- A new globular cluster candidate in the inner Galaxy

Authors: D. Froebrich (1), H. Meusinger (2), A. Scholz (3,4) ((1) University
of Kent, (2) Thueringer Landessternwarte Tautenburg, (3) University of St.
Andrews, (4) University of Toronto)

Comments: 5 pages, 5 figures, 1 table, Accepted for publication by MNRAS
letters

We carry out a large program to classify newly discovered star clusters from
Froebrich et al. (2006) in the inner Galaxy. Here, we present a first
analysis of a new high-priority globular cluster candidate, FSR1735 at
l=339.1879; b=-1.8534, based on new deep near infrared observations from
Sofi at the NTT. A significant peak in the K-band luminosity function is
found, which is interpreted as the clump of post-He-flash stars. The
distance and the reddening of the cluster are determined to 9.1kpc and
A_K=0.5mag, respectively, the metallicity is estimated to [M/H]=-0.8. Radial
star density profiles are used to measure the core radius and the tidal
radius of the cluster.

The lack of signs for on-going star formation and the position in the Galaxy
pose strong arguments against the interpretation of this object as a young
or old open cluster. All the observational evidence is in agreement with the
interpretation that FSR1735 is a so far unknown globular cluster in the
inner Galaxy.

http://arxiv.org/abs/astro-ph/0703318

• Previous message: LARRY KLAES: "SETI bioastro: NACO-SDI direct imaging search for the exoplanet Eps Eri b"

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