The impact of selective mass loss on the age determination of star clusters

P. Anders, H.J.G.L.M. Lamers, R. Grijs

Research output: Chapter in Book/Report/Conference proceedingChapterAcademic


Dynamical models and observations of star cluster evolution show clear signs of mass segregation (in the sense that high-mass stars tend to be found towards the cluster center, and low-mass stars preferentially occupy the cluster outskirts). The low-mass stars in the cluster outskirts get stripped off more easily by interaction with the gravitational potential of their host galaxy. This alters the stellar mass function within the cluster, therefore changes its spectrophotometry, altering the cluster ages determined when the new spectrophotometry is compared to standard evolutionary synthesis models. These age changes can amount up to a factor of ten (in the most extreme cases).
Original languageUndefined/Unknown
Title of host publicationMass loss from stars and the evolution of stellar clusters : proceedings of a workshop held at Lunteren, The Netherlands 29 May - 1 June 2006
EditorsA. de Koter, L.J. Smith, L.B.F.M. Waters
Place of PublicationSan Francisco
PublisherAstronomical Society of the Pacific
Number of pages471
ISBN (Print)978-1-58381-644-8
Publication statusPublished - 2008

Publication series

NameAstronomical Society of the Pacific conference series

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