Optical light curve and periodicity of A0620-00

Details Optical light curve and periodicity of A0620-00 Optical light curve and periodicity of A0620-00

Jan 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...211l..15t&link_type=abstract

Astrophysical Journal, vol. 211, Jan. 1, 1977, pt. 2, p. L15-L18.

Astronomy and Astrophysics

Astrophysics

14

Astronomical Photography, Light Curve, Novae, Visual Observation, X Ray Sources, Curve Fitting, Least Squares Method, Sine Waves

Scientific paper

Results are presented for photographic observations of the X-ray nova A0620-00, which were conducted over a period of 63 days with a 60-cm reflector. The light curve of the object is plotted, and some features of it are discussed which support the model where the optical and X radiation are emitted from a common hot cloud and which indicate that both types of radiation may be similar to that observed in the flare state of Sco X-1. A best-fit period of 7.4 days is derived from the data obtained between JD 2,442,650 and JD 2,442,749, during which time a decay rate of 0.0114 magnitude per day was observed.

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