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A1540-53, an eclipsing X-ray binary pulsatorAn eclipsing X-ray binary pulsator consistent with the location of A1540-53 has been observed. The source pulse period was 528.93 + or - 0.10 s. The binary nature is confirmed by a Doppler curve for the pulsation period. The eclipse angle of 30.5 + or - 3 deg and the 4-hour transition to and from eclipse suggest an early-type giant or supergiant primary star.
Document ID
19770061312
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/182498
Authors
Becker, R. H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Swank, J. H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Boldt, E. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Holt, S. S. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Serlemitsos, P. J. (NASA Goddard Space Flight Center Laboratory for High Energy Astrophysics, Greenbelt, Md., United States)
Pravdo, S. H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Saba, J. R. (NASA Goddard Space Flight Center Laboratory for High Energy Astrophysics, Greenbelt; Maryland, University, College Park, Md., United States)
Date Acquired
August 9, 2013
Publication Date
August 15, 1977
Publication Information
Publication: Astrophysical Journal
Subject Category
Astronomy
Accession Number
77A44164
Distribution Limits
Public
Copyright
Other

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