Young massive star clusters in nearby galaxies II. Software tools, data reductions and cluster sizes

被引：311

作者：

Larsen, SS ^{[1
]}

机构：

[1] Univ Copenhagen, Astron Observ, DK-2100 Copenhagen O, Denmark

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1999年 / 139卷 / 02期

关键词：

photometry; spiral; star clusters; techniques : image processing;

D O I：

10.1051/aas:1999509

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A detailed description is given of the data analysis leading to the discovery of young massive star clusters (YMCs) in a sample of 21 nearby galaxies. A new useful tool, ishape, for the derivation of intrinsic shape parameters of compact objects is presented, and some test results are shown. Completeness tests for the cluster samples are discussed, and ishape is used to estimate cluster sizes. Half-light radii of 0 - 20 pc are derived for clusters in 2 of the most cluster-rich galaxies, NGC 1313 and NGC 5236, which is within the range spanned by globular clusters in the Milky Way and by YMCs in the LMC and some starburst galaxies. Photometric data for all clusters, along with positions and estimated half-light radii, are tabulated.

引用

页码：393 / 415

页数：23

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