Statistics – Computation
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...328..594s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 328, May 15, 1988, p. 594-599. NSERC-supported research.
Statistics
Computation
23
Cepheid Variables, Charge Coupled Devices, Globular Clusters, Stellar Luminosity, Variable Stars, X Ray Binaries, Computational Astrophysics, Dwarf Novae, Neutron Stars, Stellar Evolution, X Ray Sources
Scientific paper
The results of a CCD search for faint and/or small amplitude variables in the field of a low luminosity X-ray source in Omega Cen, and in a rich field in 47 Tuc is reported. None of the about 3750 stars identified by DAOPHOT in the two frames varied by as much as sigma = 0.03-0.08 mag during 3-4 hr of frequently repeated imaging. If the Omega Cen X-ray source is variable, it was fainter than about + 7.5 during the observations. Contact binaries (W UMa stars) are at least as rare in the outskirts of these globulars as they are in the solar vicinity.
Kaluzny Janusz
Moffat Anthony F. J.
Potter Michael
Shara Michael M.
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