HD 176630

[Olivier Thizy]

Based on Juan Guarro latest observation (from Spectro-L), HD 176630 is now in outburst.

A double emission over an absorption line was visible in 2007 but not in 2001, 2009 and 2010. It seems worthwhile to monitor this star more frequently than one spectrum per year!

ARASBeAm link: http://arasbeam.free.fr/spip.php?page=b ... &etoile=14


Cordialement,
Olivier Thizy
Vous ne verrez plus des étoiles comme avant !
http://www.shelyak.com/en/

[Robin Leadbeater]

HD176630 activity is confirmed in a spectrum taken tonight (attached)

Robin

HD176630 confirmed activity

hd176630_20110928.png (4.25 KiB) Viewed 5780 times

[Thierry Garrel]

Bravo Robin. Le premier spectres de Be de vous que je vois
Ce qui est intéressant, c'est que cette étoile était déjà en activité il y a dix ans. Peut être une binaire ? D'une manière générale il serait très efficace de rechercher des binaires parmi les étoiles Be inactives, car la mesure de vitesse radiale en Ha est alors strictement photosphérique.

[english]

What is interesting, is that this star was already avtive ten years ago. Can be a binary? In a general way it would be very effective to look for binary among the inactive Be stars, because the measure of radial velocity in H alpha is then strictly photospherical.
Nice spectra Robin, fist Be spectra i saw from you !