[vsnet-newvar 8259] Re: [vsnet-alert 25784] Re: ASASSN-21gk: strange light curve

[Josch Hambsch]

It seems to have a 1.33 day period so far.

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: Samstag, 1. Mai 2021 09:54
To: Taichi Kato
Cc: vsnet-newvar at ooruri.kusastro.kyoto-u.ac.jp; vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp
Subject: [vsnet-alert 25784] Re: ASASSN-21gk: strange light curve

The AAVSO lightcurve is pretty spectacular !

Op za 1 mei 2021 om 09:51 schreef Siegfried Vanaverbeke <
siegfriedvanaverbeke at gmail.com>:

> Indeed it doesn't appear consistent with microlensing from your 
> description of the lightcurve.
>
> Siegfried
>
> Op za 1 mei 2021 om 02:58 schreef Taichi Kato <
> tkato at kusastro.kyoto-u.ac.jp>:
>
>> ASASSN-21gk: strange light curve
>>
>>    Josch Hambsch has reported observatioons.
>> This object (microlensing?) has shown a very unusual light curve.  
>> Rapid rise on Apr. 22, around maximum on Apr. 25, faint on Apr. 27, 
>> rapid fade on Apr. 29, rapid rise on Apr. 30.  Such a variation would 
>> not expected for a simple microlensing.
>> Spectroscopy is needed.
>>
>>


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