[vsnet-alert 25825] Re: ASASSN-21gk: strange light curve

[robin at threehillsobservatory.co.uk]

A noisy R~500 spectrum (3.5 air mass and twilight sky) 20210505 is
consistent with a late F/early G star

https://britastro.org/specdb/data_graph.php?obs_id=9503&std_spectra_id=p_g0v




-----Original Message-----
From: vsnet-alert <vsnet-alert-bounces at ooruri.kusastro.kyoto-u.ac.jp> On
Behalf Of Taichi Kato
Sent: 01 May 2021 01:59
To: vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp;
vsnet-newvar at ooruri.kusastro.kyoto-u.ac.jp
Subject: [vsnet-alert 25781] ASASSN-21gk: strange light curve

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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