Massive stars, globular clusters and elliptical galaxies

by: G Meynet, T Decressin, C Charbonnel

ArXiv e-prints, Vol. 801 (January 2008)

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Abstract

Globular clusters as $ω$ Cen and NGC 2808 appear to have a population of very He-rich stars. From a theoretical point of view, one expects the presence of He-rich stars in all globular clusters showing an oxygen-sodium (O-Na) anticorrelation. In this paper, we briefly recall how fast rotating massive stars could be the main source of the material from which He-rich stars have formed. We speculate that the UV-upturn phenomenon observed in all elliptical galaxies might be due to He-rich stars. If this hypothesis is correct then fast rotating massive stars may have played in the early evolutionary phases of these systems a similar role as the one they played in the nascent globular clusters.

@article{citeulike:2820018, abstract = {Globular clusters as \$\omega\$ Cen and NGC 2808 appear to have a population of very He-rich stars. From a theoretical point of view, one expects the presence of He-rich stars in all globular clusters showing an oxygen-sodium (O-Na) anticorrelation. In this paper, we briefly recall how fast rotating massive stars could be the main source of the material from which He-rich stars have formed. We speculate that the UV-upturn phenomenon observed in all elliptical galaxies might be due to He-rich stars. If this hypothesis is correct then fast rotating massive stars may have played in the early evolutionary phases of these systems a similar role as the one they played in the nascent globular clusters.}, author = {Meynet, G. and Decressin, T. and Charbonnel, C. }, citeulike-article-id = {2820018}, eprint = {0801.1574}, journal = {ArXiv e-prints}, keywords = {decressin}, month = {January}, posted-at = {2008-05-21 14:25:36}, priority = {2}, title = {Massive stars, globular clusters and elliptical galaxies}, url = {http://arxiv.org/abs/0801.1574}, volume = {801}, year = {2008} }

RIS record

TY - JOUR ID - citeulike:2820018 L3 - citeulike-article-id:2820018 TI - Massive stars, globular clusters and elliptical galaxies JF - ArXiv e-prints VL - 801 N2 - Globular clusters as $\omega$ Cen and NGC 2808 appear to have a population of very He-rich stars. From a theoretical point of view, one expects the presence of He-rich stars in all globular clusters showing an oxygen-sodium (O-Na) anticorrelation. In this paper, we briefly recall how fast rotating massive stars could be the main source of the material from which He-rich stars have formed. We speculate that the UV-upturn phenomenon observed in all elliptical galaxies might be due to He-rich stars. If this hypothesis is correct then fast rotating massive stars may have played in the early evolutionary phases of these systems a similar role as the one they played in the nascent globular clusters. KW - decressin AU - Meynet, G AU - Decressin, T AU - Charbonnel, C PY - 2008/January// UR - http://arxiv.org/abs/0801.1574 ER -

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