[vsnet-outburst 26735] Re: ASASSN-21cf: dip in WZ Sge-type superoutburst for AM CVn candidate

[Kojiguchi Naoto]

Hello Sebastion,

I'm sorry I didn't explain it enough.
I have also determined that g = 13.935 point on 2021-02-25.3687 is an artifact.
I judged that a dip may be a temporary fading of the WZ Sge-type superburst for AM CVn stars based on the ASASSN lightcurve  excepted g = 13.935 point from 2021-02-24.09 to 2021-02-25.94.

Of course, a light curve of this object is strongly contaminated by a nearby star, so we need to confirm that this fading is real.

Best regards,
Naoto Kojiguchi

On 2021/02/27 0:32, Sebastián Otero wrote:
> Hello Kojiguchi,
>
>> According to the ASASSN data, this object have shown a dip since February 24 (vsnet-alert 25445).
>> This suggests that this object is probably AM CVn star with WZ Sge-type superoutburst.
>>
>> ASASSN Sky Patrol (strongly contaminated by a nearby star):
>> https://asas-sn.osu.edu/sky-patrol/coordinate/428117a9-b529-42b3-8e15-da37681b91c1
>> https://asas-sn.osu.edu/sky-patrol/coordinate/5b4263e7-1797-4991-b079-7a62e1dcd403
>
> If you refer to the single g= 13.935 point on 2021-02-25.3687, this is an artifact, since it is 1.3 mag. below the nearby star's magnitude. No result below g= 12.62 will be real.
>
> Cheers,
> Sebastian
> -- 
> Sebastian Otero
> VSX Team
> American Association of Variable Star Observers
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