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Title:
The identification and UBV photometry of the visible component of the Centaurus X-3 binary system
Authors:
Krzeminski, W.
Publication:
Astrophysical Journal, vol. 192, Sept. 15, 1974, pt. 2, p. L135-L138. (ApJL Homepage)
Publication Date:
09/1974
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
ECLIPSING BINARY STARS, LIGHT CURVE, STELLAR SPECTROPHOTOMETRY, UBV SPECTRA, VARIABLE STARS, X RAY SOURCES, ASTRONOMICAL CATALOGS, COMPANION STARS, PULSARS
Comment:
A&AA ID. AAA012.142.073
DOI:
10.1086/181609
Bibliographic Code:
1974ApJ...192L.135K

Abstract

The optical component of the pulsating binary X-ray source Cen X-3 is identified with a faint, /V/ = 13.35, heavily reddened variable star lying slightly outside the error box of the 3U catalog. It shows a double-peaked light curve with an amplitude of about 0.12 mag which agrees in both period and phase with the X-ray data. The shallower minimum coincides in time with the X-ray pulsar eclipse. The estimated distance to Cen X-3 is about 8 kpc.

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