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Variability of Young Massive Stars in the Arches Cluster

Published online by Cambridge University Press:  23 April 2012

K. Markakis ,
A. Z. Bonanos ,
G. Pietrzynski ,
L. Macri  and
K. Z. Stanek
K. Markakis
Affiliation:
National Observatory of Athens, Institute of Astronomy & Astrophysics, I. Metaxa & Vas. Pavlou St., P. Penteli 15236, Athens, Greece email: markakis@astro.noa.gr, bonanos@astro.noa.gr
A. Z. Bonanos
Affiliation:
National Observatory of Athens, Institute of Astronomy & Astrophysics, I. Metaxa & Vas. Pavlou St., P. Penteli 15236, Athens, Greece email: markakis@astro.noa.gr, bonanos@astro.noa.gr
G. Pietrzynski
Affiliation:
Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, PolandUniversidad de Concepción, Departamento de Astronomia, Casilla 160-C, Concepción, Chile
L. Macri
Affiliation:
Department of Physics & Astronomy, Texas A&M University, College Station, TX 77842-4242, USA
K. Z. Stanek
Affiliation:
The Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA
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Abstract

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We present preliminary results of the first near-infrared variability study of the Arches cluster, using adaptive optics data from NIRI/Gemini and NACO/VLT. The goal is to discover eclipsing binaries in this young (2.5 ± 0.5 Myr), dense, massive cluster for which we will determine accurate fundamental parameters with subsequent spectroscopy. Given that the Arches cluster contains more than 200 Wolf-Rayet and O-type stars, it provides a rare opportunity to determine parameters for some of the most massive stars in the Galaxy.

Keywords

Galaxy: centerinfrared: Starsopen clusters and associations: individual (Arches cluster)binaries: eclipsingstars: variablesstars: Wolf-Rayet
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S282: From Interacting Binaries to Exoplanets: Essential Modeling Tools , July 2011 , pp. 454 - 455
Copyright
Copyright © International Astronomical Union 2012

References

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