Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..335..129m&link_type=abstract
The Light-Time Effect in Astrophysics, Proceedings of ASP Conference Series, Vol. 335, held in Brussels 19-22 July 2004. Edited
Astronomy and Astrophysics
Astrophysics
4
Scientific paper
We analyze times of maximum and minimum in the long-term light curves of the recently discovered double periodic variables in order to enlighten the nature of their photometric variability. Whereas it seems well established that the short-term variability is strictly periodic and seems to be well explained as ellipsoidal variations in a close binary system, we find the long-term variability not strictly periodic, with an hitherto unexplained origin.
Assmann Patrick
Gieren Wolfgang
Mennickent Ronald E.
Pietrzynski Grzegorz
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