[vsnet-alert 25616] Re: ASASSN-21co

Tue Mar 30 00:10:18 JST 2021

It seems it is going back up based on my data from last night.

Egress has started.

Josch

From: Siegfried Vanaverbeke [mailto:siegfriedvanaverbeke at gmail.com] 
Sent: Sonntag, 28. März 2021 18:51
To: Josch Hambsch
Cc: Taichi Kato
Subject: Re: [vsnet-alert 25484] Re: ASASSN-21co

Fine.  Let us wait for the egress to come.

Op zo 28 mrt. 2021 om 17:06 schreef Josch Hambsch <hambsch at telenet.be>:

The object is still at the low (eclipse) level.
I have observed it the past 28 nights every night in BVRI filter. Data are with the AAVSO database.

Josch

-----Original Message-----
From: vsnet-alert [mailto:vsnet-alert-bounces at ooruri.kusastro.kyoto-u.ac.jp] On Behalf Of Siegfried Vanaverbeke siegfriedvanaverbeke at gmail.com via vsnet-alert
Sent: Dienstag, 2. März 2021 13:53
To: Taichi Kato
Cc: vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp
Subject: [vsnet-alert 25484] Re: ASASSN-21co

We suspect it is something like that, but the details are of course unknown yet.  Josch Hambsch has put this object on his observing list on my request.

Siegfried

Op di 2 mrt. 2021 om 00:42 schreef Taichi Kato <tkato at kusastro.kyoto-u.ac.jp
>:

> > This object has an asymmetric eclipse which is now ongoing.
> > Its orbital period is close to 11.8 years.  The primary is a red 
> > giant, the secondary unknown but most likely with a giant ring 
> > system.
>
>    Would this be an AGB/post-AGB object + companion surrounded by a 
> dusty disk?
>
>

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