Recurrent nova V745 Sco in outburst
Posted: Sat Feb 08, 2014 11:49 pm
Here is a spectrum of V745 Sco 10x180s with the Star Analyser 100 in the convergent beam of a 254mm SCT with focal reducer f/6.3, captured with an Atik 383 L+.
Recurrent nova V745 Sco was reported as having eruptedon 6 Feb. Last outburst was 1989.
I've identified the lines with best guesses based on the literature that I've found. Spectra from the first phase of the 1989 outburst are almost identical - these can be found in Williams et al. 1991. The nova clearly has a strong He emission profile. Some interesting nebular lines developed quite quickly in 1989 - it will be interesting to see if they reappear.
The Ha line is very broad - but includes HeII 6678 at this resolution.
Note that the "emission" feature at around 8350 is the zero-order image of a faint background star.
Cheers
Jonathan
Recurrent nova V745 Sco was reported as having eruptedon 6 Feb. Last outburst was 1989.
- 8 feb.jpg (252.92 KiB) Viewed 5042 times
The Ha line is very broad - but includes HeII 6678 at this resolution.
Note that the "emission" feature at around 8350 is the zero-order image of a faint background star.
Cheers
Jonathan