Blue stragglers in star clusters and the conventional SSP models

Yu Xin*, Richard de Grijs, Licai Deng, Pavel Kroupa

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution


The presence of blue straggler stars (BSs) as secure members of star clusters poses a major challenge to the conventional picture of simple stellar population (SSP) models. The models are based on the stellar evolution theory of single stars, while the major formation mechanisms of BSs are all correlated with stellar interactions. Based on a sufficient working sample including 100 Galactic open clusters, one Galactic globular cluster, and seven Magellanic Cloud star clusters, we discuss the modifications of the properties of broad-band colors and Lick indices of the standard SSP models due to BS populations.
Original languageEnglish
Title of host publicationStar clusters : basic galactic building blocks throughout time and space
Subtitle of host publicationproceedings of the 266th Symposium of the International Astronomical Union held in Rio de Janeiro, Brazil, 10-14 August 2009
EditorsRichard De Grijs, Jacques R. D. Lépine
Place of PublicationCambridge, UK
PublisherCambridge University Press (CUP)
Number of pages1
ISBN (Print)9780521764995
Publication statusPublished - 2010
Externally publishedYes
Event266th Symposium of the International-Astronomical-Union - Rio de Janeiro, Brazil
Duration: 10 Aug 200914 Aug 2009

Publication series

NameIAU Symposium Proceedings Series
PublisherCambridge University Press
ISSN (Print)1743-9213


Conference266th Symposium of the International-Astronomical-Union
CityRio de Janeiro


  • blue stragglers
  • galaxies: star clusters


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