possible galactic nova asassn-22hw

[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 5030 times

[2SPOT]

A spectrum taken with an Alpy 600 from Chile in automatic observation (no human intervention).

[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 5004 times

[2SPOT]

New spectrum taken last night and comparison with our other spectrum taken one day ago.

[2SPOT]

A third spectrum taken last night

[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)

[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 4810 times

[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

[Peter Velez]

ATel now posted on this target.

https://www.astronomerstelegram.org/?read=15435

It must be nova season!

Pete

[Terry Bohlsen]

I have now also joined the group and took a spectrum last night. Taken with my LISA R=1500
Terry