The Orbit and Properties of the BD+60 73 + IGRJ00370+612 Supergiant X-Ray Binary

Details The Orbit and Properties of the BD+60 73 + IGRJ00370+612 Supergiant X-Ray Binary The Orbit and Properties of the BD+60 73 + IGRJ00370+612 Supergiant X-Ray Binary

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..240..133b&link_type=abstract

Binary Stars as Critical Tools and Tests in Contemporary Astrophysics, International Astronomical Union. Symposium no. 240, he

Astronomy and Astrophysics

Astrophysics

Scientific paper

Spectrograms of the blue and H alpha regions of BD+60 73 obtained with the Cassegrain spectrograph on the David Dunlap Observatory 1.88 m telescope have been measured for radial velocities. These measures confirm that BD+60 73 is a single-line spectroscopic binary with the same period, 15.665 d, as the x-ray flux variations of IGRJ00370+612. The x-ray maxima occur at or just after the time of periastron passage, even though the eccentricity e=0.37 does not seem large enough to produce a large increase in the mass flux at the position of the compact object at the time of periastron passage. The mass function combined with a plausible range of possible masses for a neutron star companion yields primary masses within the range expected for the spectral type of BD+60 73. The compact companion cannot be a black hole unless the supergiant has an exceptionally high mass for its B1Ib spectral type or the inclination of the orbit is very low. The H alpha line shows weak, variable emission, but we have insufficient data to test whether these variations are correlated with orbital phase. We note, as have other authors, that BD+60_73 is projected on the sky within the bounds of Cas OB5. It also lies close to the "adolescent" supernova remnant CTB1. However, the binary system has a radial velocity of approximately -40 km/s with respect to Cas OB5.

Affiliated with

Also associated with

No associations

Rating

The Orbit and Properties of the BD+60 73 + IGRJ00370+612 Supergiant X-Ray Binary does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Orbit and Properties of the BD+60 73 + IGRJ00370+612 Supergiant X-Ray Binary, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Orbit and Properties of the BD+60 73 + IGRJ00370+612 Supergiant X-Ray Binary will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1810981