The Story of the Eclipsing Double-Lined Binary HD224113

Details The Story of the Eclipsing Double-Lined Binary HD224113 The Story of the Eclipsing Double-Lined Binary HD224113

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984msngr..35...15h&link_type=abstract

The Messenger, No. 35, P.15, 1984

Astronomy and Astrophysics

Astronomy

1

Scientific paper

For an observing astronomer it is always very exciting to record an unexpected event, even if this is "only" the detection of the optical variability of a spectroscopic binary. This happened to me in July 1978 when I performed a photometrie programme at the ESO 50 cm telescope. Since the allotted observing time was a bit too late to follow my programme stars until the end of the night, I had prepared a list of about 20 radial velocity variables to check their photometrie behaviour during the remaining hours. The first object I selected was HD 224113, a B6V star with a magnitude of V - 6.1. Suddenly, after some minutes of observation the brightness dropped off and faded away continuously until the rising sun prevented further measurements. The nature and range of the variation (6 V - 0.2) indicated that an eclipse had been observed. Of Course, for the nights to come, the hours before dawn were devoted to further observations of this star. However, no further variations were recognized, HD 224113 showed a Constant brightness all the time.

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