Canalblog
Editer l'article Suivre ce blog Administration + Créer mon blog
Publicité
Spectro, Astero et Hélio Blog
11 octobre 2010

Somes September and early October news of epsilon Aurigae

Hi everybody,

it was a long time i did not any blog on my observations. I was very busy with weirds spectral things during August on eps  aur and compete a spectral run on Be star with more than forty stars observations. Some publications are awaited on theses events.

Now autumn weather is back, rayny and windy for weeks so i have time to talk about the latest observations. Here are the last news of eps , 2010 September, early October. I will talk further about strange things arriving during august at OHP spectroscopy star party.

We passed mid eclipse during early august. Now the second part of the eclipse began.

The spectral Ha profile change a lot and fast just before mid eclipse, in June and after, August. See animation of the entire Ha spectrum from 2009, Sept 25th to 2010, Oct 8th.

epsaur20090925_20101008_anim

 

 

 

 

epsaur_Ha_anim

 

 

 

 

 

 

 

A transient emission line appeared from the end of September, blue shifted about 6603.7A,  and get stronger in early October with redshifted at  6604A. 0.3A means a mere Rv of 13.6 Km/s, withou earth velocity correction, about 15 millons Km from Sept,26 to Oct 8th!

epsaur_20101008_903screenshot__1_

 

20101008_Hacore

 

 

A Ew courbe calculated on the 6550 6570 domain and 49 spectras show a strong period of variation of 104.13d ! Certainly a primary star effect.ew_courbe__1_

powerfunctionSinefunction

Publicité
Commentaires
Publicité
Archives
Spectro, Astero et Hélio Blog
  • Toutes mes observations spectrales, spectroscope, télescope pour percer le secret des étoiles. Observation des astéroides, TNO et KBO Observation diu Soleil. All about star spectroscopy and how to do this Asteroids, TNO and KBO Sun observation
  • Accueil du blog
  • Créer un blog avec CanalBlog
Pages
Publicité