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possible galactic nova asassn-22hw
Posted: Sat Jun 11, 2022 11:23 am
by Hamish Barker
Asassn-22hw
RA / DEC
13:24:31.296 -72:10:29.86
Looks rather like the U sco profile in terms of multi-peaked H alpha and beta profiles. FWHM circa 2000km/s. I can't get isis to measure it properly, either I'm doing it wrong or the multi peak thing is giving it trouble.
- asassn-22hw_20220611_423_Hamish Barker-halpha-beta-lineprofile.png (16.77 KiB) Viewed 3003 times
Re: possible galactic nova asassn-22hw
Posted: Sat Jun 11, 2022 1:05 pm
by 2SPOT
A spectrum taken with an Alpy 600 from Chile in automatic observation (no human intervention).
Re: possible galactic nova asassn-22hw
Posted: Sat Jun 11, 2022 1:41 pm
by Hamish Barker
that's nice to be able to do it automatically!
I forgot to add my guider image.
- asassn-22hw-guider.jpg (55.21 KiB) Viewed 2977 times
Re: possible galactic nova asassn-22hw
Posted: Sun Jun 12, 2022 3:34 pm
by 2SPOT
New spectrum taken last night and comparison with our other spectrum taken one day ago.
Re: possible galactic nova asassn-22hw
Posted: Mon Jun 13, 2022 4:41 pm
by 2SPOT
A third spectrum taken last night
Re: possible galactic nova asassn-22hw
Posted: Tue Jun 14, 2022 8:00 pm
by Francois Teyssier
Excellent!
Page opened:
https://aras-database.github.io/databas ... s2022.html
Sorry for the delay
Hamish: for work on the spectra, I wouls suggest PlotSpectra (Tim Lester)
Re: possible galactic nova asassn-22hw
Posted: Tue Jun 14, 2022 10:50 pm
by Hamish Barker
Another spectrum last night. As expected, further decline of the continuum making to the emission in features appear relatively stronger. I don't see the same dramatic changes of peaks to the h alpha profile as we have seen on the latest u sco outburst.
- asassn-22hw_20220614_430_Hydrogen-velocity-Hamish Barker.png (18.37 KiB) Viewed 2783 times
Re: possible galactic nova asassn-22hw
Posted: Wed Jun 15, 2022 7:09 am
by Peter Velez
Here is my contribution
Taken on Monday evening. Taken with a UVEX 600 lines/mm centred roughly on H gamma. Those emissions are pretty fat!
Pete
Re: possible galactic nova asassn-22hw
Posted: Thu Jun 16, 2022 12:15 am
by Peter Velez
ATel now posted on this target.
https://www.astronomerstelegram.org/?read=15435
It must be nova season!
Pete
Re: possible galactic nova asassn-22hw
Posted: Thu Jun 16, 2022 7:55 am
by Terry Bohlsen
I have now also joined the group and took a spectrum last night. Taken with my LISA R=1500
Terry