NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Beta Crateris - Another Sirius system in the solar neighbourhoodThe star Beta Crt (A2 IV; mv = 4.48) has been detected in the Rosat all-sky survey. The Rosat X-ray and EUV data in conjunction with already published optical data suggest that the source of the X-ray emission is not the A star Beta Crt A, but rather a hitherto unknown white dwarf companion Beta Crt B, just like the well-known case of Sirius A and B. However, unlike Sirius B, Beta Crt B is too close to its primary to be resolved and/or studied optically. The temperature and atmospheric composition of the white dwarf companion are estimated and the similarities between this system and Sirius is discussed.
Document ID
19910064065
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fleming, T. A.
(Max-Planck-Institut fuer Extraterrestrische Physik, Garching, Federal Republic of Germany; Joint Institute for Laboratory Astrophysics, Boulder CO, United States)
Schmitt, J. H. M. M.
(Max-Planck-Institut fuer Extraterrestrische Physik Garching, Federal Republic of Germany, United States)
Barstow, M. A.
(Leicester, University United Kingdom)
Mittaz, J. P. D.
(London, University College, Dorking, United Kingdom)
Date Acquired
August 14, 2013
Publication Date
June 1, 1991
Publication Information
Publication: Astronomy and Astrophysics
Volume: 246
Issue: 1 Ju
ISSN: 0004-6361
Subject Category
Astrophysics
Accession Number
91A48688
Funding Number(s)
CONTRACT_GRANT: NAGW-1480
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available