The relation between X-ray emission and rotation in late-type stars from the perspective of X-ray selection

Journal Article · Mon May 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167454· OSTI ID:5643897

Fleming, T A; Gioia, I M; Maccacaro, T ^[1]

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1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)

An X-ray-selected sample of 128 late-type (F-M) stars was analyzed. These stars were identified as optical counterparts to serendipitous X-ray detections made by the Einstein Observatory Extended Medium Sensitivity Survey. Once identified as X-ray sources, the sample was followed up by an extensive program of optical observations, including high-resolution and low-resolution spectroscopy and photometry. Spectral types, luminosity classes, distances, X-ray luminosities, projected rotation rates (v sin i), radial velocities, and binary status have been determined for the sample. 41 refs.

• OSTI ID: 5643897
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 340; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATMOSPHERES
BINARY STARS
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DISTANCE
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
LUMINOSITY
MOTION
OPTICAL PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
RADIATIONS
ROTATION
SPECTROSCOPY
STARS
STELLAR ACTIVITY
STELLAR ATMOSPHERES
STELLAR CORONAE
VISIBLE RADIATION
X RADIATION