A study of X-ray emission from AP and AM stars

Abstract

view Abstract Citations (43) References (13) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A study of X-ray emission from Ap and Am stars. Cash, W. ; Snow, T. P., Jr. Abstract Twenty stars classified as either Ap or Am have been imaged by the Imaging Proportional Counter on the Einstein Observatory in a search for evidence of coronal emission. It is found that an Am star will not be a source (at the 10 to the 28th ergs/sec level) unless it is in a spectroscopic binary with a period below about 10 days. The X-rays in the close binaries can be explained by the RS CVn effect in the late-type secondary, and the evidence is against strong emission from Am stars. Among the nine Ap stars observed, four were detected. While it is possible that the X-rays are being generated by undetected late-type dwarf companions, the large fraction of detections makes the Ap stars themselves the likely source of emission. Publication: The Astrophysical Journal Pub Date: December 1982 DOI: 10.1086/183924 Bibcode: 1982ApJ...263L..59C Keywords: A Stars; Binary Stars; Stellar Coronas; X Ray Sources; X Ray Stars; Astronomical Spectroscopy; Companion Stars; Dwarf Stars; Late Stars; Peculiar Stars; Astronomy; A Stars:X-Ray Binaries; Ap Stars:X Rays; Stellar Coronae:X Rays full text sources ADS | data products SIMBAD (22)