at2024aauu

E Soubrouillard · Post by **E Soubrouillard** » Thu Nov 14, 2024 7:43 am

Hello,

new interesting target being alerted by TNS https://www.wis-tns.org/object/2024aauu

It is located a few arc seconds from WISEA J053752.10+493717.4, galaxy of m=20 (data NED)

Here is its spectrum after 4*30 minutes of exposure.

: at2024aauu.png (8.15 KiB) Viewed 5280 times

The offset of the line Ha would correspond to a z=0.037 approx. I have not found any data on this subject yet. The broad lines around 5190A could correspond to the [OIII] lines and that at 3860A approx could be the [OII] (rest 3726A)?

Maybe it is an artifact due to the treatment (but it is always present depending on the setting of the binning zones), it would seem that there is a reverse P-Cygni profile just after the line Ha. If this is true, is it the signature of something particular?

Cheers

Emmanuel