Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...354..720s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 354, May 10, 1990, p. 720-725.
Astronomy and Astrophysics
Astrophysics
16
Accretion Disks, Eclipsing Binary Stars, Light Curve, X Ray Binaries, Charge Coupled Devices, Companion Stars, M Stars, Stellar Mass, Stellar Spectrophotometry
Scientific paper
The detection of a small modulation in the light curve of the GX 9 + 9 optical counterpart at the same period as determined from the X-ray data is reported. The optical variability is roughly sinusoidal in shape with a period of 4.198 + or - 0.0094 hours and an average peak-to-peak amplitude in the B of 0.19 mag with comparable amplitudes in the V and R bandpasses, and has superposed flickering with a typical amplitude of six percent. The mass of the companion star is deduced to be 0.4 solar mass, which corresponds to an early M-type star. The bulk of the optical light arises in the accretion disk, while the variability arises from orbital modulation of the light reprocessed off the companion star and a bright spot. It is suggested that the X-ray modulation might be due to the asymmetries of X-rays reflected off the bright spot.
No associations
LandOfFree
The optical light curve of the low-mass X-ray binary GX 9 + 9 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 optical light curve of the low-mass X-ray binary GX 9 + 9, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The optical light curve of the low-mass X-ray binary GX 9 + 9 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-779670