X-RAY DETECTION OF THE CLUSTER CONTAINING THE CEPHEID S MUS

@article{Evans2014XRAYDO,
  title={X-RAY DETECTION OF THE CLUSTER CONTAINING THE CEPHEID S MUS},
  author={Nancy Remage Evans and Ignazio Pillitteri and Scott J. Wolk and Edward F. Guinan and Scott G. Engle and Howard E. Bond and Gail H. Schaefer and Margarita Karovska and Joseph DePasquale and Evan Tingle},
  journal={The Astrophysical Journal Letters},
  year={2014},
  volume={785}
}
The galactic Cepheid S Muscae has recently been added to the important list of Cepheids linked to open clusters, in this case the sparse young cluster ASCC 69. Low-mass members of a young cluster are expected to have rapid rotation and X-ray activity, making X-ray emission an excellent way to discriminate them from old field stars. We have made an XMM-Newton observation centered on S Mus and identified a population of X-ray sources whose near-IR Two Micron All Sky Survey counterparts lie at… 

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