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The Effect of Binary Interactions in Infrared Passbands

Published online by Cambridge University Press:  01 April 2008

F. Zhang ,
L. Li  and
Z. Han
F. Zhang
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province 650011, China email: [email protected] or [email protected]
L. Li
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province 650011, China email: [email protected] or [email protected]
Z. Han
Affiliation:
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province 650011, China email: [email protected] or [email protected]
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Abstract

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We present the integrated J, H, K, L, M and N magnitudes and the colours involving infrared bands, for an extensive set of instantaneous-burst binary stellar populations (BSPs) by using evolutionary population synthesis (EPS). By comparing the results for BSPs WITH and WITHOUT binary interactions we show that the inclusion of binary interactions makes the magnitudes of populations larger (fainter) and the integrated colours smaller (bluer) for τ ≥ 1 Gyr. Also, we compare our model magnitudes and colours with those of Bruzual & Charlot (2003, hereafter BC03) and Maraston (2005, hereafter M05). At last, we compare these model broad colours with Magellanic Clouds globular clusters (GCs) and Milky Way GCs. In (V − R)−[Fe/H] and (V − I)−[Fe/H] diagrams it seems that our models match the observations better than those of BC03 and M05.

Keywords

infrared: generalbinaries: generalstars: evolutiongalaxies: clusters: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S252: The Art of Modeling Stars in the 21st Century , April 2008 , pp. 435 - 436
Copyright
Copyright © International Astronomical Union 2008

References

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