Orbital effects on the light curves of eta Car, BP Cru, and other eccentric binaries

van Genderen, A.M.; Sterken, C.

1 Leiden Observatory, P.B. 9513, NL-2300RA Leiden, The Netherlands, genderen@strw.leidenuniv.nl

2 Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium

We provide observational evidence that Eta Carinae's optical and near-infrared light peak around the periastron passages are in various respects similar to the periastron effects exhibited by other eccentric binaries, and therefore may well have the same physical cause. We list the magnitude of the effect for V380 Cyg = HD187879, V346 Cen = HD101837, V1647 Sgr = HD163708, V560 Car = HD93205, BP Cru = WRA977 and Eta Car = HD93308.

Reference: IBVS No. 5782 2007
Status: Manuscript has been accepted

Weblink: http://www.konkoly.hu/cgi-bin/IBVS?5782


Email: csterken@vub.ac.be