Discovery of eclipses in the short-period RS CVn system 1E1919+0427.

Details Discovery of eclipses in the short-period RS CVn system 1E1919+0427. Discovery of eclipses in the short-period RS CVn system 1E1919+0427.

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....113.2242s&link_type=abstract

Astronomical Journal v.113, p.2242-2245 (1997)

Astronomy and Astrophysics

Astronomy

6

Binaries: Spectroscopic

Scientific paper

X-ray and spectroscopic observations suggested that the x-ray source 1E1919+0427 might be an RS CVn system. In 1990, we therefore began a program of photometric observations of this system and have data each year from 1990 to 1994. From our five years of photometry we find that 1E1919+0427 is an eclipsing system with a period of 0.873712 days. We also model the more complete light curves and find a distortion wave that is consistent with dark spots. Removing the effects of the distortion wave from our most complete light curve (1993) we model the system orbital parameters.

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