Photometric Observations of BW VUL

Details Photometric Observations of BW VUL Photometric Observations of BW VUL

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jkas...18....1j&link_type=abstract

Journal of Korean Astronomical Society, vol.18, p.1-13

Astronomy and Astrophysics

Astronomy

2

Scientific paper

We present the data of photoelectric photometric observations of BW Vul carried out for four nights during the period of1982~1984. The lgith curves with asymmetric shape show a stillstand on the ascending branch at phase of Phi = 0.85 just before the maximum light, and also the amplitude and shape of light curves are changed from night to night. Using all the published data, a new ephemeris of maximum time is derived, in which the period of lgith variation is P=0^d.20102977 and its increasing rate is 2.2 sec/century.

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