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Post Info TOPIC: YY Herculis
Blobrana


L

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RE: YY Herculis
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The symbiotic star YY Her is in outburst

The symbiotic star YY Her is in outburst. The last outburst phase ended during 2006, and was characterised by three brightness maxima occourring in early 2003, mid-2004 and late 2005, with a separation of about 500 days among them. The last of these maxima occoured on 20 Nov 2005 at B = 12.69, V=11.92, Ic=10.17.
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Blobrana


L

Posts: 131433
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Title: Ellipsoidal effect in the symbiotic star YY Her
Authors: M. Wiecek, M. Mikolajewski, T. Tomov, E. Swierczynski, C. Galan, P. Wychudzki

A new estimation of the orbital period of YY Her on the base of our and published observations is presented. Phased light curves in RI bands show evidently ellipsoidal effect connected with the tidal distortion of the giant surface.

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