Hello,

recently the pre main double star Z cma showed a stong photometric outburst according to the AAVSO special notice #232 http://www.aavso.org/aavso-special-notice-232

A new amateur international spectroscopic campaign has been designed to gather all amateur spectra observations concerning this outburst both in high and low resolution, visual and IR.

http://www.astrosurf.com/aras/surveys/prestars/zcma/

Coordinates (2000.0) : R.A. = 07h03m43.2s, Decl. = -11°33'06"

imageZcma

This star has a very spectacular spectra, showing spectral features of all types, emission, absorption, P_cyg, Doppler shift, broaden, jet under a nebular environment. Image capture during acquisition, 2D and 1D spectra in high resolution Ha

Zcma

Zcma__spectre2D_traitez_cma_20110204_923

It would be an easy amateur target during winter, even at mV 8. If you want to join the spectroscopic campaign please send spectra to me or on the spectro-L list, under Fit format with a graphic JPG, PNG.

It's a clear spectacular object, so go ahead !

 

 

Campaign update:

Message on spectro-L Yahoogroup

"new ARAS campaign around Z cma outburst has almost fifteen days and gathered 23 spectra from seven different observers.
Survey from both low, intermediate and high resolution spectra covering the whole optical and near IR range from 430nm to 920nm is showing an active system, with daily changes of profile and intensity of Balmer series, FeII, NaI, CaII, and bllue shifted HeI
 
 
We need more observers, specially in high resolution and IR domain. It is a very interesting object. At mV8 this exotic target is in the range of a double decimeter amateur scope with a large slit or slitless spectrograph. Typically exposure time is about 1H30 for having a good contrast between lines and continuum .

 

 If you want to join the Z cma campaign please send me your spectra, in fit format with your comments and or a graphic format.

 

Bonjour à tous,
la campagne ARAS autour de l'outburst de Z cma a déjà 15 jours et récolté 23 spectres de sept observateurs différents. La surveillance de cet objet autant en basse, moyenne et haute résolution couvrant le domaine optique et proche IR de 430nm à 920nm montre un système très actif avec des changements journaliers de profils et d'intensité des séries de Balmer, FeII, NaI, CaII et HeI.
 
 
Nous avons besoin de plus d'observateurs surtout en haute résolution et en infra rouge. C'est un objet fascinant. A mV8 il est à la portée d'un télescope décimétrique amateur moyen et d'un spectrographe sans fente ou à fente large. Le temps d’exposition est de l'ordre d'une heure et trente minutes permettant d'obtenir un bon contraste raie continuum.
Si vous voulez rejoindre la campagne Z cma, envoyez moi vos spectres en format fit avec vos commentaire et ou un format graphique."