spectro-aras.com

Newswise — MOUNT WILSON, Calif.–Astronomers at Georgia State University’s Center for High Angular Resolution Astronomy (CHARA) have observed the expanding thermonuclear fireball from a nova that erupted last year in the constellation Delphinus with unprecedented clarity.
The observations produced the first images of a nova during the early fireball stage and revealed how the structure of the ejected material evolves as the gas expands and cools. It appears the expansion is more complicated than simple models previously predicted, scientists said. The results of these observations, carried out by 37 researchers from 17 institutions and led by Georgia State astronomer Gail Schaefer, are published in the current issue of Nature.

The press release :

http://www.newswise.com/articles/georgi ... -of-a-nova

Animation of Fireball expansion
http://www.chara.gsu.edu/NovaDelMovie.gif


This abstract in Nature

http://www.nature.com/nature/journal/va ... ml#figures

Note that Shore and al. (us) are quoted

François

Extraits :

"We downloaded six spectra with a high resolving power (R = 10,000) obtained over the first week by O. Garde from the archive of the Astronomical Ring for Access to Spectroscopy17 and transformed them to a unit continuum on a heliocentric wavelength grid"

"We acknowledge the variable star observations from the AAVSO International Database contributed by observers worldwide and used in this research. We thank O. Garde and other members of the Astronomical Ring for Access to Spectroscopy for use of their archive of Nova Del 2013 spectra. "

Incredible! Another great observation by CHARA
Congratulations to Olivier and all ARAS observers!
Paolo

Hi Paolo,

In fact, if I did the first amateur spectrum of this nova, it's because you post the news on this forum last year
http://www.spectro-aras.com/forum/viewt ... ?f=5&t=682

Just 2 hours after your message.

So thanks a lot for this news....

Olivier