Light-Time Effects in the Homunculus of η Carinae

Details Light-Time Effects in the Homunculus of η Carinae Light-Time Effects in the Homunculus of η Carinae

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..335..343v&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

1

Scientific paper

A comparison is made of broad-band photometry of the Homunculus (ground-based) with the broad- and narrow-band photometric data of the central region (HST-based), obtained from 1998 to 2003. Our investigation shows that, apart from the extreme brightening of the central region in 1998 and 1999 (which is probably due to a fast decrease of temporary excess-extinction in front of this area) the Homunculus and the central star varied in a similar way. Such behaviour excludes the existence of any measurable smearing-out effect including light-time effects in the Homunculus due to reflections. Except, perhaps, for the variable UV radiation originating in the equatorial plane, modulated by the 5.5 yr binary period.

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