GAS SURFACE DENSITY, STAR FORMATION RATE SURFACE DENSITY, AND THE MAXIMUM MASS OF YOUNG STAR CLUSTERS IN A DISK GALAXY. II. THE GRAND-DESIGN GALAXY M51

We analyze the relationship between maximum cluster mass and surface densities of total gas ([Sigma [subgas]]), molecular gas ([Sigma [sub H2]] ), neutral gas ([Sigma [subHi]]), and star formation rate ([Sigma [subSFR]]) in the grand-design galaxy M51, using published gas data and a catalog of masse...

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Bibliographic Details
Published in:The Astrophysical journal 2013-06, Vol.770 (2), p.1-11
Main Authors: GONZALEZ-LOPEZLIRA, ROSA A, PFLAMM-ALTENBURG, JAN, Kroupa, Pavel
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Clusters
COMPARATIVE EVALUATIONS
DENSITY
DESIGN
Disk galaxies
Disks
Formations
GALAXIES
MASS DISTRIBUTION
STAR CLUSTERS
Star formation rate
STARS
SURFACES
TWO-DIMENSIONAL CALCULATIONS
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Summary:We analyze the relationship between maximum cluster mass and surface densities of total gas ([Sigma [subgas]]), molecular gas ([Sigma [sub H2]] ), neutral gas ([Sigma [subHi]]), and star formation rate ([Sigma [subSFR]]) in the grand-design galaxy M51, using published gas data and a catalog of masses, ages, and reddenings of more than 1800 star clusters in its disk, of which 223 are above the cluster mass distribution function completeness limit. In the case of the younger sample, even if the clusters have not yet traveled too far from their birth sites, the poor resolution of the radio data compared to the physical sizes of the clusters results in measured [Sigma] that are likely quite diluted compared to the actual densities relevant for the formation of the clusters.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/770/2/85