[vsnet-alert 25412] ASASSN-21br: rapid fading, might also be an AM CVn star
Taichi Kato
tkato at kusastro.kyoto-u.ac.jp
Thu Feb 18 08:05:59 JST 2021
ASASSN-21br: rapid fading, might also be an AM CVn star
Josch Hambsch recorded this object at 16.8 mag
on Feb. 17. Nearly 3 mag fading in one day.
YYYYMMDD(UT) mag observer
20210212.319 <171g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017))
20210213.310 137g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017))
20210214.390 138g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017))
20210216.653 139 (Rod Stubbings)
20210217.623 <150 (Rod Stubbings)
This object might also be an AM CVn-type outburst
just like ZTF20acyxwzf = ASASSN-21au. If this is
the case, the object would brighten again.
Intensive time-resolved photometry is encouraged
(the orbital period is short if it is an AM CVn star).
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