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Spectroscopic and Photometric Studies of an X-ray–Selected Sample of Chromospherically Active Binary Stars1

Published online by Cambridge University Press:  12 April 2016

Robert P. Stefanik ,
Laurence A. Marschall  and
Harold L. Nations
Robert P. Stefanik
Affiliation:
Harvard–Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, USA
Laurence A. Marschall
Affiliation:
Dept. of Physics, Gettysburg College, Gettysburg, PA 17325, USA
Harold L. Nations
Affiliation:
The College of Charleston, Charleston, SC 24924, USA

Extract

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Data from the Einstein X-Ray satellite continue to provide useful information for studies of x-ray emitting objects. The Einstein Medium Sensitivity Survey (EMSS), a tabulation of serendipitously discovered point sources from the Einstein database, included a number of objects which were identified, on the basis of spot sampling of optical spectra, as likely binary star systems (Fleming 1988, Silva et al. 1987; Takalo & Nousek 1988). Because the sample is limited primarily by X-ray flux, the physical characteristics of these stars are of considerable interest for understanding the origins of stellar activity among cool stars.

Type
HST, IUE, & Rosat Observations
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 389 - 392
Copyright
Copyright © Astronomical Society of the Pacific 1992

Footnotes

2

Visiting Astronomer, Kitt Peak National Observatory, National Optical Astronomy Observatories, operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation.

1

Some of the observations reported were obtained at the Multiple Mirror Telescope Observatory, a joint facility of the Smithsonian Institution and the University of Arisona.

References

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