SIMBAD references

2000MNRAS.311..169C - Mon. Not. R. Astron. Soc., 311, 169-175 (2000/January-1)

OGLE observations of four X-ray binary pulsars in the Small Magellanic Cloud.

COE M.J. and OROSZ J.A.

Abstract (from CDS):

This paper presents analysis and interpretation of OGLE photometric data of four X-ray binary pulsar systems in the Small Magellanic Cloud (SMC): 1WGA J0054.9-7226, RX J0050.7-7316, RX J0049.1-7250 and 1SAX J0103.2-7209. In each case, the probable optical counterpart is identified on the basis of its optical colours. In the case of RX J0050.7-7316 the regular modulation of its optical light curve appears to reveal an ellipsoidal modulation with a period of 1.416d. Using reasonable masses for the neutron star and the B star, we show that the amplitude and relative depths of the minima of the I-band light curve of RX J0050.7-7316 can be matched with an ellipsoidal model where the B star nearly fills its Roche lobe. For mass ratios in the range of 0.12 to 0.20, the corresponding best-fitting inclinations are about 55° or larger. The neutron star would be eclipsed by the B star at inclinations larger than ~60° for this particular mass ratio range. Thus RX J0050.7-7316 is a good candidate system for further study. In particular, we would need additional photometry in several colours, and most importantly, radial velocity data for the B star before we could draw more quantitative conclusions about the component masses.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): binaries: general - stars: emission-line, Be - Magellanic Clouds

Simbad objects: 15

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2021.12.02-07:46:37

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