New Compact Star Cluster Candidates in the Galactic Plane

Froebrich, Dirk (2017) New Compact Star Cluster Candidates in the Galactic Plane. Monthly Notices of the Royal Astronomical Society, 469 (2). pp. 1545-1552. ISSN 0035-8711. E-ISSN 1365-2966. (doi:https://doi.org/10.1093/mnras/stx938) (Full text available)

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Abstract

The sample of known star clusters, the fundamental building blocks of galaxies, in the Milky Way is still extremely incomplete for objects beyond a distance of 1-2kpc. Many of the more distant and young clusters are compact and hidden behind large amounts of extinction. We thus utilised the deep high resolution near infrared surveys UGPS and VVV to uncover so far unknown compact clusters and to analyse their properties. Images of all objects in the area covered by these two surveys, and which are listed as Galaxy in SIMBAD have been inspected and 125 so far unknown stellar clusters and candidate clusters have been identified. Based on the frequent associations with star formation indicators (nebulosities, IRAS sources, Hii regions, masers) we find that the typical cluster in our sample is young, at distances between 1-10kpc and has a typical apparent radius of 25arcsec. We suggest more systematic searches e.g. at all positions of 2MASS extended sources to increase the completeness of the known cluster sample beyond distances of 2kpc.

Item Type: Article
Uncontrolled keywords: Galaxy: open clusters and associations: general; galaxies: star clusters: general; Galaxy: evolution; Galaxy: general; Galaxy: structure
Subjects: Q Science > QB Astronomy > QB460 Astrophysics
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Dirk Froebrich
Date Deposited: 18 Apr 2017 08:44 UTC
Last Modified: 13 Sep 2017 14:32 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/61356 (The current URI for this page, for reference purposes)
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