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

[vsnet-alert 28035] TCP J01330474+3913194: new eclipsing WZ Sge star
by Kojiguchi 03 Dec '24

03 Dec '24

TCP J01330474+3913194: new eclipsing WZ Sge Star Itoh-san has reported time-resolved observations. Moriyama-san has also reported snapshots. The light curve shows an overlapping profile of early superhumps and eclipses. The period and amplitude are 0.0551(1) d and about 0.8 mag, respectively. Further observations are encouraged.

1 0

[vsnet-alert 28033] TCP J06330104+0303350 = Gaia DR3 3130088774241620608
by Yusuke Tampo 29 Nov '24

29 Nov '24

TCP J06330104+0303350 = Gaia DR3 3130088774241620608 TCP J06330104+0303350 was discovered by T. Kojima on 2024-11-28.76 at 13.9 mag and now brightened to V=13.4 mag according to TOCP reports. http://www.cbat.eps.harvard.edu/unconf/followups/J06330104+0303350.html This system has already been pointed as a WZ Sge-type cataclysmic variable candidate in Inight et al 2024, named Gaia DR3 3130088774241620608. https://www.aavso.org/vsx/index.php?view=detail.top&oid=2389763 https://ui.adsabs.… [View More]

1 0

[vsnet-alert 28032] ASASSN-24gv - new SU UMa-type dwarf nova
by Yusuke Tampo 29 Nov '24

29 Nov '24

ASASSN-24gv - new SU UMa-type dwarf nova ASASSN-24gv is a new CV candidate discovered by ASAS-SN at 15.25 mag on 2024-11-25. The quiescence counterpart is the g=22.34(2) star in the YMCA catalog, thus outburst amplitude is ~7 mag. Our time-resolved observations at SAAO on 2024-11-28 detected likely superhumps with a period of ~0.06 d and amplitude of 0.12 mag, classifying ASASSN-24gv as an SU UMa-type dwarf nova. Further observations are encouraged to establish its superhump period. Best … [View More]

1 0

[vsnet-alert 28030] TCPJ00205034+3628247: superhumps
by Katsuki Muraoka 29 Nov '24

29 Nov '24

TCPJ00205034+3628247: superhumps Stephen M. Brincat reported time-resolved observations of TCPJ00205034+3628247. This object started showing superhumps with an amplitude of ~0.3 mag andperiodicity of around 0.051 d. Further observations are encouraged. Best Regards, Katsuki

1 1

[vsnet-alert 28029] ASASSN-24gm: new WZ Sge-type dwarf nova
by Yusuke Tampo 12 Nov '24

12 Nov '24

ASASSN-24gm: new WZ Sge-type dwarf nova South African Astronomical Observatory team and Josch Hambsch have reported the time-resolved observations of ASASSN-24gm. Observations on 12 Nov. at SAAO detected clear superhumps, ~16 d after its discovery by ASAS-SN on 27th Oct. The tentative superhumps period is 0.0602(1) d, while 1-d aliases are still possible. Combining its short superhump period, large outburst amplitude of 8.4 mag, and long waiting time for superhump appearance, ASASSN-24gm is … [View More]

1 0

[vsnet-alert 28028] QZ Vir superoutburst
by 大島誠人 11 Nov '24

11 Nov '24

Dear collegues, QZ Vir (= T Leo) is now undergoing a superoutburst. Although this object can be observed just before the dawn, please observe superhumps of this object if possible. Tomohito Ohshima

1 0

[vsnet-alert 28027] GOTO065054.49+593624.51: end of the type-E rebrighening
by Yusuke Tampo 31 Oct '24

31 Oct '24

GOTO065054.49+593624.51: end of the type-E rebrighening According to the most recent ATLAS forced photometry and AAVSO observations by Nikola Antonov, Arto Oksanen, and Klaus Wenzel, this object dimmed around 18th mag on 2024-10-30, likely an end of its type E brightening. As type-E-rebrighening systems typically show additional short-lived brightenings, daily snapshots are still encouraged. Best regards, Yusuke #ATLAS forced photometry #UTC mag band observer 20241004.59088 13.215 c atlas … [View More]

1 0

[vsnet-alert 28026] maintenance power outrage
by Katsuki Muraoka 31 Oct '24

31 Oct '24

Dear, VSNET members, I'm Katsuki Muraoka, a M2 student of Kyoto University. I must inform you all that there will be a maintenance power outage for the Kyoto Univ. building on this weekend, so VSNET server must be shut down in advance. The shutdown is scheduled to occur around 16:00 JST on November 2nd (UTC: 07:00), and the system is scheduled to be restored at around 17:30 JST (UTC: 08:30) on November 3rd. Thank you for your cooperation. Katsuki Muraoka

1 0

[vsnet-alert 28025] GOTO065054.49+593624.51: type-E rebrightening WZ Sge star?
by Yusuke Tampo 23 Oct '24

23 Oct '24

GOTO065054.49+593624.51: type-E rebrightening WZ Sge star? Recent time-resolved observations reported to VSNET/AAVSO, especially those by Tonny Vanmunster, David Messier, Nikola Antonov, and Ian Sharp, show growing superhumps after its recovery from the short-lived dip around 2024-10-19. Using these time-resolved observations after the dip, the superhump period is obtained as 0.06323(2) d, consistent with previous Tonny's reports to VSNET alerts. These features suggest that this ongoing … [View More]

1 0

[vsnet-alert 28024] GOTO065054.49+593624.51 is now optically confirmed as a new WZ Sge-type darf nova
by tonny.vanmunster＠gmail.com 18 Oct '24

18 Oct '24

Dear colleagues, I have just completed my analysis of unfiltered CCD observations of GOTO065054.49+593624.51, acquired on Oct 17/18, 2024 at the CBA Extremadura Observatory in Spain. The observations were made using a 0.40-m f/5.1 telescope and SX-46 CCD camera under moderately clear skies, though conditions were only favorable for about 2.2 hours. Since the discovery announcement by T. Killestein et al. on Oct 4, 2024 (ATEL #16842), I have been observing this object across multiple nights, … [View More]

1 0

2025

2024

2023

2022

2021

vsnet-alert