P du Cygne (Luc Caron)

P du Cygne

Link: https://groupecoamnd.wixsite.com/coamnd/luc-caron

P du Cygne

Link: https://groupecoamnd.wixsite.com/coamnd/luc-caron

P du Cygne est une étoile bleu lumineuse variable (LBV) supergéante probablement l'étape juste avant la classe des Wolf-Rayet. Classe spectrale B1 2la-0 pe. 19 000 K.On enregistre ici l'émission des raies de Balmer en raison d'une bulle de gaz en expansion autour de l'étoile (voir le calendrier spectro de Pierre et Clermont). Le spectre ressemble un peu à une nova ou supernova.Je détecte le profil P causé par l'effet Doppler des gaz en expansion qui se dirige vers nous ou qui s'éloigne de nous pour la bande He 6678. J'obtiens une différence de 3 A et en appliquant la formule adéquate, j'évalue une vitesse d'expansion de 134 Km/s pour ces gaz.Je ne distingue pas le profil P pour la bande H alpha... je suis à 600 l/mm peut-être pas suffisant pour la résoudre.

P Cygnus is a supergiant blue luminous variable (LBV) star probably the stage just before the Wolf-Rayet class. Spectral class B1 2la-0 pe. 19,000 K.We record here the emission of Balmer lines due to an expanding gas bubble around the star. The spectrum looks a bit like a nova or supernova.I detect the P profile caused by the Doppler effect of expanding gases moving towards us or away from us for the He 6678 band. I obtain a difference of 3 A and by applying the adequate formula, I estimates an expansion rate of 134 km/s for these gases.I can't make out the P profile for the H band alpha...I'm at 600 l/mm maybe not enough to resolve it.

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Status	Basic failed
Started	...
Astrometry.net job	6014076
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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