November 2022 - vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 27022] ASASSN-22nf long outburst with precursor?
by Taichi Kato 08 Nov '22

08 Nov '22

ASASSN-22nf long outburst with precursor? SU UMa star? YYYYMMDD(UT) mag observer 20221022.1296 16.228zr (ZTF Alert DC mag (Masci+ 2019)) 20221022.1725 16.574zg (ZTF Alert DC mag (Masci+ 2019)) 20221025.2254 18.632zg (ZTF Alert DC mag (Masci+ 2019)) 20221027.1250 17.164zr (ZTF Alert DC mag (Masci+ 2019)) 20221027.1537 17.606zg (ZTF Alert DC mag (Masci+ 2019)) 20221029.1745 16.261zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1114 16.307zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1625 16.820zg (ZTF Alert DC mag (Masci+ 2019)) 20221105.1120 16.532zr (ZTF Alert DC mag (Masci+ 2019)) 20221105.1558 17.039zg (ZTF Alert DC mag (Masci+ 2019))

1 0

[vsnet-alert 27021] ASASSN-14jx long outburst
by Taichi Kato 08 Nov '22

08 Nov '22

ASASSN-14jx long outburst The long outburst in 2021 June had a separate precursor. Might be an SU UMa star. YYYYMMDD(UT) mag observer 20221015.5012 <155c (Yutaka Maeda) 20221019.1664 18.654zr (ZTF Alert DC mag (Masci+ 2019)) 20221019.4683 <163c (Yutaka Maeda) 20221021.1986 18.632zg (ZTF Alert DC mag (Masci+ 2019)) 20221024.4708 <158c (Yutaka Maeda) 20221025.1276 16.324zr (ZTF Alert DC mag (Masci+ 2019)) 20221025.2278 16.040zg (ZTF Alert DC mag (Masci+ 2019)) 20221025.5002 <160c (Yutaka Maeda) 20221027.1409 16.076zr (ZTF Alert DC mag (Masci+ 2019)) 20221027.1997 15.888zg (ZTF Alert DC mag (Masci+ 2019)) 20221028.5051 <154c (Yutaka Maeda) 20221029.1397 16.171zg (ZTF Alert DC mag (Masci+ 2019)) 20221029.2396 16.348zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1414 16.655zr (ZTF Alert DC mag (Masci+ 2019)) 20221102.4884 <158c (Yutaka Maeda) 20221103.4582 <160c (Yutaka Maeda) 20221104.4906 <158c (Yutaka Maeda) 20221105.1249 16.907zr (ZTF Alert DC mag (Masci+ 2019)) 20221105.1728 16.858zg (ZTF Alert DC mag (Masci+ 2019)) 20221105.4862 <150c (Yutaka Maeda)

1 0

[vsnet-alert 27020] MASTER OT J001204.00-412337.4 eighth rebrightening
by Taichi Kato 08 Nov '22

08 Nov '22

MASTER OT J001204.00-412337.4 eighth rebrightening According to the data by Josch Hambsch, this object showed another rebrightening on Oct. 31-Nov. 1. The interval between the 7th and 8th rebrightenings twice longer than before.

1 0

[vsnet-alert 27019] ASASSN-22mr: start of long rebrightening
by Taichi Kato 08 Nov '22

08 Nov '22

ASASSN-22mr: start of long rebrightening According to the data by Josch Hambsch, this object experienced a dip from Oct. 30 to Nov. 1, then rebrightened. The rebrightening appears to be a long one such as in WZ Sge.

1 0

[vsnet-alert 27017] TCP J02194236+3735540 fading rapidly
by Taichi Kato 08 Nov '22

08 Nov '22

TCP J02194236+3735540 fading rapidly Discovered already near the end of the supposed superoutburst? YYYYMMDD(UT) mag observer 20221030.2954 15.729zr (ZTF Alert DC mag (Masci+ 2019)) 20221030.3812 15.300zg (ZTF Alert DC mag (Masci+ 2019)) 20221101.4720 15.94C (Masayuki Moriyama) 20221101.4741 15.75:V (Masayuki Moriyama) 20221102.6533 16.13C (Masayuki Moriyama) 20221103.6377 16.29C (Masayuki Moriyama) 20221104.6744 178:C (Masayuki Moriyama) 20221105.585 <189C (Hiroshi Itoh)

2 1

[vsnet-alert 27016] The stop and recovery of VSNET
by Daisaku NOGAMI 05 Nov '22

05 Nov '22

Dear all VSNET participants, As you noticed, the VSNET stopped delivering e-mails on Oct. 20. This is because the Kyoto University Intergrated Network System (KUINS) detected that the VSNET server had tried to send too many e-mails in a short time and KUINS decided to disconnect the VSNET server from the internet. KUINS then requested that the VSNET administrators take action to ensure that it does not happen again and report it back to KUINS. The cause of the mass e-mailing by the VSNET server was one major provider's refusal to receive e-mail due to a large volume of incoming e-mail. We, the VSNET administrators then did some changed on the settings of the VSNET server and unsubscribed some e-mails of hotmail.com, outlook.com, live.com, gmail.com, icloud.com, yahoo.com, and mac.com from vsnet-mira* and vsnet-recent*. After reporting these actions to KUINS, the VSNET server was again connected to the internet on Oct. 31. We hope you will continue to use VSNET as before, since the problem was only the internet connection of the VSNET server, and there was no problem on the server itself. As Kato-san mentioned other vsnet-alert e-mails, all the VSNET sub-lists are available at http://ooruri.kusastro.kyoto-u.ac.jp . When you find a sub-list that looks interesting, please click the list name and see the link "more information about this list" and follow the instruction for controlling the subscription. Note that, when you subscribe to vsnet-mira and vsnet-recent, you should use an e-mail address that can receive over 2,000 e-mails per day. We will send a notice to the addresses unsubscribed later. With best regards, Daisaku Nogami on behalf of the VSNET administrators

1 0

[vsnet-alert 27015] ZTF18aczbcqy possible superoutburst
by Taichi Kato 05 Nov '22

05 Nov '22

ZTF18aczbcqy possible superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20221029.2460 17.523zr (ZTF Alert DC mag (Masci+ 2019)) 20221029.3289 17.482zg (ZTF Alert DC mag (Masci+ 2019)) 20221031.1333 17.751zr (ZTF Alert DC mag (Masci+ 2019))

1 0

[vsnet-alert 27014] ZTF18abvarea possible superoutburst
by Taichi Kato 05 Nov '22

05 Nov '22

ZTF18abvarea possible superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20221025.2084 16.255zg (ZTF Alert DC mag (Masci+ 2019)) 20221027.1671 16.452zg (ZTF Alert DC mag (Masci+ 2019)) 20221029.1850 16.451zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1228 16.788zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1524 16.895zg (ZTF Alert DC mag (Masci+ 2019))

1 0

[vsnet-alert 27013] MGAB-V672 possible superoutburst
by Taichi Kato 05 Nov '22

05 Nov '22

MGAB-V672 possible superoutburst Type from ZTF data. Short supercycle (100-200 d) and another superoutburst is due. YYYYMMDD(UT) mag observer 20221030.4250 16.524zg (ZTF Alert DC mag (Masci+ 2019)) 20221030.4791 16.438zr (ZTF Alert DC mag (Masci+ 2019))

1 0

[vsnet-alert 27012] KLK-42 likely superoutburst
by Taichi Kato 05 Nov '22

05 Nov '22

KLK-42 likely superoutburst WZ Sge or AM CVn. Multiple rebrightenings during the 2019 July-Aug. outburst in ZTF data. YYYYMMDD(UT) mag observer 20221029.1296 19.212zg (ZTF Alert DC mag (Masci+ 2019)) 20221029.1878 18.347zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1085 17.070zr (ZTF Alert DC mag (Masci+ 2019)) 20221031.1510 16.931zg (ZTF Alert DC mag (Masci+ 2019))

1 0

2024

2023

2022

2021

vsnet-alert November 2022