[vsnet-alert 25520] Re: SDSS J083751.00+383012.5 brightening (polar)

[John.R.Thorstensen at Dartmouth.edu]

I think the case for it being an AM Her is pretty solid:

Schmidt et al.  2005ApJ...630.1037S

Szkody et al.  2009AJ....137.3606H

John Thorstensen

On Sun, 7 Mar 2021, Patrick Schmeer wrote:

> SDSS J083751.00+383012.5 (NLAM)
> https://www.aavso.org/vsx/index.php?view=detail.top&oid=132357
> 
> Complete ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S
> and Kochanek et al. 2017PASP..129j4502K) light curve and data:
> https://asas-sn.osu.edu/sky-patrol/coordinate/bc1a41fe-e8ad-49e5-838d-e2746777c177
> 
> Zwicky Transient Facility (ZTF) light curve and data:
> https://lasair.roe.ac.uk/object/ZTF18aacvbng/
> 
> The current bright state (outburst?) began on 2021 February 15.
> A previous one was recorded from 2015 December 3 to 13.
> Is this an AM Herculis-type variable (= polar) for sure?
> 
> Follow-up observations are encouraged.
> 
> Clear skies,
> Patrick
> -------
> Am Samstag, 6. März 2021, 00:44:42 MEZ hat Taichi Kato <tkato at kusastro.kyoto-u.ac.jp> Folgendes geschrieben:
> 
> 
> SDSS J083751.00+383012.5 brightening (polar)
> 
>   Polar with dwarf nova-like outbursts.  Porb=0.1325 d.
> 
>   YYYYMMDD(UT)  mag  observer
>   20210219.2147 16.249zr  (Zwicky Transient Facility Lasair (Masci+ 2019))
>   20210223.2628 16.760zr  (Zwicky Transient Facility Lasair (Masci+ 2019))
>   20210305.1819 16.725zr  (Zwicky Transient Facility Lasair (Masci+ 2019))
> 
> http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia21bfb/
> Gaia21bfb    AT2021elw    2021-03-03 19:07:17    129.46246    38.50347    16.96    18.55    0.62    CV    2021-03-05 09:51:20    known CV
> CSS101203:083751+383013 in 3 mag outburst
> 
> 
>

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John R. Thorstensen
Department of Physics and Astronomy
Dartmouth College
6127 Wilder Laboratory
Hanover, NH 03755

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