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New Star Clusters Discovered in the GLIMPSE Survey

journal contribution
posted on 2023-05-16, 17:45 authored by Mercer, EP, Clemens, DP, Meade, MR, Babler, BL, Indebetouw, R, Whitney, BA, Watson, C, Wolfire, MG, Wolff, MJ, Bania, TM, Benjamin, RA, Cohen, M, John DickeyJohn Dickey, Jackson, JM, Kobulnicky, HA, Mathis, JS, Stauffer, JR, Stolovy, SR, Uzpen, B, Churchwell, EB
A systematic and automated search of the extensive GLIMPSE mid-infrared survey data of the inner Galaxy was carried out to uncover new star clusters. This search has yielded 59 new clusters. Using our automated search algorithm, these clusters were identified as significant localized overdensities in the GLIMPSE point-source catalog (GLMC) and archive (GLMA). Subsequent visual inspection of the GLIMPSE image mosaics confirmed the existence of these clusters plus an additional 33 heavily embedded clusters missed by our detection algorithm, for a total of 92 newly discovered clusters. These previously uncataloged clusters range in type from heavily embedded to fully exposed clusters. More than half of the clusters have memberships exceeding 35 stars, and nearly all the clusters have diameters of 3′ or less. The Galactic latitude distribution of the clusters reveals that the majority are concentrated toward the Galactic midplane. There is an asymmetry in the number of clusters located above and below the midplane, with more clusters detected below the midplane. We also observe an asymmetry in the number of clusters detected in the northern and southern halves of the Galaxy, with more than twice as many clusters detected in the south. © 2005. The American Astronomical Society, All rights reserved.

History

Publication title

The Astrophysical Journal

Volume

635

Pagination

560-569

ISSN

0004-637X

Department/School

School of Natural Sciences

Publisher

The University of Chicago Press

Place of publication

Chicago, USA

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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