SIMBAD references

2009ApJ...703.1872V - Astrophys. J., 703, 1872-1883 (2009/October-1)

Compact star clusters in the M31 disk.

VANSEVICIUS V., KODAIRA K., NARBUTIS D., STONKUTE R., BRIDZIUS A., DEVEIKIS V. and SEMIONOV D.

Abstract (from CDS):

We have carried out a survey of compact star clusters (apparent size ≲3'') in the southwest part of the M31 galaxy, based on the high-resolution Suprime-Cam images (17'.5x28'.5), covering ∼15% of the deprojected galaxy disk area. The UBVRI photometry of 285 cluster candidates (V ≲ 20.5 mag) was performed using frames of the Local Group Galaxies Survey. The final sample, containing 238 high probability star cluster candidates (typical half-light radius rh∼ 1.5 pc), was selected by specifying a lower limit of rh≳ 0".15 (≳0.6 pc). We derived cluster parameters based on the photometric data and multiband images by employing simple stellar population models. The clusters have a wide range of ages from ∼5 Myr (young objects associated with 24 µm and/or Hα emission) to ∼10 Gyr (globular cluster candidates), and possess mass in a range of 3.0 ≲ log(m/m) ≲ 4.3 peaking at m ∼ 4000 m. Typical age of these intermediate-mass clusters is in the range of 30 Myr ≲ t ≲ 3 Gyr, with a prominent peak at ∼70 Myr. These findings suggest a rich intermediate-mass star cluster population in M31, which appears to be scarce in the Milky Way galaxy.

Abstract Copyright:

Journal keyword(s): galaxies: individual: M31 - galaxies: star clusters - stars: formation

VizieR on-line data: <Available at CDS (J/ApJ/703/1872): table1.dat>

Simbad objects: 247

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2021.01.21-11:36:18

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