Be star V442 and

Information about outbursts of eruptive stars, Be activity, ...
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Valerie Desnoux
Posts: 97
Joined: Wed Sep 28, 2011 4:52 am

Be star V442 and

Post by Valerie Desnoux »

During the OHP spectro party, I observed V442 and on 27th and 30th of July. The latest spectrum in BeSS was in absorption and now the h-alpha line is in emission with increase between the 2 last observations. Weather is not permitting to follow tonight... we are probably capturing the emission event.
_v442and_20140731_026.png
_v442and_20140731_026.png (14.97 KiB) Viewed 3102 times
This star is well known for having transitionned to emission several times in the past.
V442and.png
V442and.png (25.35 KiB) Viewed 3102 times
Valerie
Paolo Berardi
Posts: 578
Joined: Thu Sep 29, 2011 10:51 pm

Re: Be star V442 and

Post by Paolo Berardi »

Hello Valerie, I report some observations that show H-alpha line strength increasing. All spectra are submitted to BeSS.

Image

Paolo
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