[vsnet-alert 23939] FS Aur: decreasing mass-transfer rate

[Taichi Kato]

FS Aur: decreasing mass-transfer rate

   ZTF data indicate that the quiescent brightness is
rapidly decreasing.  Such fading was recorded
in 2018 November in the past.

  YYYYMMDD(UT)   mag  observer
  20191214.2119 16.090zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20191214.2420 15.971zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20191216.2048 16.197zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20191218.2172 14.899zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20191220.2187 16.141zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20191220.7553 <158c  (Yutaka Maeda)
  20191221.2174 14.984zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20191222.7299 <160c  (Yutaka Maeda)
  20191224.7743 <154c  (Yutaka Maeda)
  20191229.2285 16.530zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20191231.6383 158:c (Yutaka Maeda)
  20200103.1629 15.006zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200103.6572 <145c  (Yutaka Maeda)
  20200104.6345 <157c  (Yutaka Maeda)
  20200105.4479 16.538zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200105.6840 <157c  (Yutaka Maeda)
  20200112.1220 16.601zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200112.6775 <129c  (Yutaka Maeda)
  20200115.1567 14.326zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200116.1574 16.711zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200118.6164 <160c  (Yutaka Maeda)
  20200119.1871 16.444zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200119.2249 16.429zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200120.5716 <158c  (Yutaka Maeda)
  20200121.7246 <127c  (Yutaka Maeda)
  20200123.1922 16.846zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200125.1420 16.850zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200126.2039 15.362zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200128.1399 16.637zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200128.6508 <154c  (Yutaka Maeda)
  20200129.2144 16.839zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200130.2157 17.058zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200131.1349 14.244zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200201.1243 17.136zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200201.2467 16.963zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20200201.6441 <144c  (Yutaka Maeda)
  20200202.6824 <143c  (Yutaka Maeda)