[vsnet-alert 25332] Re: ZTF20acyxwzf = ASASSN-21au: possible WZ Sge star

[Kojiguchi Naoto]

ASASSN Sky Patrol:
https://asas-sn.osu.edu/sky-patrol/coordinate/f1fe7c78-cbb9-4fcd-b53e-1299f69056ce

On 2021/02/06 1:16, Kojiguchi Naoto wrote:
> ZTF20acyxwzf =ASASSN-21au: possible WZ Sge star
>
>     Large outburst amplitude of 7 mag. According to the ASASSN data, no past outburst.
> The ZTF data clearly indicate ~1 mag brightening and redding between 2020 June and before outburst (e.g. vsnet-alert 23441).
>
> ASASSN infomation:
> 14:23:52.86 +78:30:13.0
> https://twitter.com/SuperASASSN/status/1357693824378621952
> https://twitter.com/SuperASASSN/status/1357703053558894592
>
> Lasair:
> https://lasair.roe.ac.uk/object/ZTF20acyxwzf/
>
> IDs:
> 142352.812 +783013.331 Gaia_EDR3_1714575958453248000 Plx=-(-) pmRA=-(-) pmDE=-(-) G=20.923672(0.019084) BP-RP=0.077957
> 142352.824 +783013.272 PS1_202202159703645164 g=20.9555(0.0592) r=21.0433(0.0918) i=21.3549(0.0364) z=20.7246(0.1677)
> 142352.948 +783013.255 GALEXJ142352.9+783013 NUV=21.3876(0.3395)
>
> ZTF20acyxwzf =ASASSN-21au
>     20210203.451 19.135zr ZLR
>     20210204.500 <14.357g ASN
>     20210204.455 17.826zg ZLR
>     20210204.408 18.011zr ZLR
>     20210205.422 13.303g ASN
>     20210205.472 14.265zg ZLR
>     20210205.435 14.177zr ZLR