spectro-aras.com

Perhaps a rebrightning:

Optical spectroscopy of V572 Vel: Not obviously a classical nova

ATel #17256; Steve Shore (Univ. Pisa, INAF-OATS), Olivier Garde, Stephane Charbonnel, Lionel Mulato , Pascal Le Dû, Thomas Petit (2SPOT), Paul Luckas (Univ. Western Australia, ARAS), Francois Teyssier (ARAS), Peter Velez (ARAS)
on 30 ...

A bright transcient has been detected in Vela

http://www.cbat.eps.harvard.edu/unconf/followups/J10251200-5331109.html

The target was detected in gamma:

https://www.astronomerstelegram.org/?read=17252

An identification as dwarf nova of type SU UMa (outburst and super outbursts) was proposed ...

Great monitoring.

[OI] 6300 is now obvious, classical evolution during the decline.

Spectra on: https://aras-database.github.io/databa ... p2025.html

Light curves from AAVSO observers:

Bright nova in Lupus
RA 15:08:03.274 DE -40:08:29.58
discovered by ASASSN (
https://www.wis-tns.org/object/2025nlr
Identified as nova by Yusuke Tampo: https://www.astronomerstelegram.org/?read=17228

First spectra secured by Keith Shank in the database: https://aras-database.github.io/database ...

Recent spectrum

Active state with EW(H alpha) ~ 15 ans EW (He II) ~ 3.5.


TCrB_echelle.png

Note the complex profile of H beta and He I 5876 with 3 apparent peaks.

This spectrum is a textbook case showing that H alpha is far to be the best Balmer line for astrophysics studies : too much ...

Update with an altazimutal map for Northern observers at 00:00 UT - latitude = 0° (Southern will come very soon!)
The window opened with the hover gives the priority (from 0: very interesting to 3: poor interest) according to ARAS eruptive stars program.
It is of course partially subjective. Do not ...

The classical (eclipsing) symbiotic star V1413 Aql is in outburst: V = 10.4 on 05-05-2025

AAVSO B and V bands:

AAVSO_BV.png

The star is well placed for a monitoring of the decline of the outburst, until the next eclipse.

Spectrum secured in 2020 by Pavol Dubovsky during the last outburst ...

A new tool for observers:

List of symbiotic stars with the last observations from AAVSO database (V., Visible)

I hope it will help

https://aras-database.github.io/databas ... SySts.html

To do : add graphs

François Teyssier

Etienne,

Je vais sortir les transcriptions en français et en anglais

François