Symbiotic V618 Sgr - unusual brightening

Symbiotic V618 Sgr - unusual brightening

Postby Robin Leadbeater » Tue Feb 26, 2019 10:56 am

Reported an unusually large brightening of V618 Sgr. Spectroscopy
requested, though it looks like it is back close to quiescence now. ASASSN
light curve here

https://asas-sn.osu.edu/light_curves/c1 ... 1c618d571f

Robin

-----Original Message-----
From: Taichi Kato
Sent: Tuesday, February 26, 2019 5:33 AM
To: variable_star_forum@yahoogroups.com ;
vsnet-alert@ooruri.kusastro.kyoto-u.ac.jp ; vsnet-alert@yahoogroups.com ;
vsnet-campaign-symbio@ooruri.kusastro.kyoto-u.ac.jp
Subject: [vsnet-alert 23030] Re: V618 Sgr brightening

Re: V618 Sgr brightening

> Kojima-san reported the brightening of V618 Sgr as follows.
> This brightening was also recorded in the ASAS-SN database.

Note that this object had been very faint for decades
before the rise in 2017 Aug. The current amplitude
is unusually large for a symbiotic star and something
unexpected may be taking place. Spectroscopy would be
desirable.
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
Robin Leadbeater
 
Posts: 1187
Joined: Mon Sep 26, 2011 4:41 pm

Return to Symbiotic Stars

Who is online

Users browsing this forum: No registered users and 2 guests

x