- vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 17350] ASASSN-22ak sudden fading
by Taichi Kato 09 Jun '23

09 Jun '23

ASASSN-22ak sudden fading Josch Hambsch detected a sudden fading on June 8 (16.2 to 18.0 in one day). The object was still fading. No major rebrightenings were recorded after past outbursts.

1 0

[vsnet-campaign-dn 17349] ASASSN-13cz superoutburst
by Taichi Kato 08 Jun '23

08 Jun '23

ASASSN-13cz superoutburst Only the final part was observed during the 2016 one. Supercycle 460 d recently and now is the expected time. YYYYMMDD(UT) mag observer 20230521.6193 <178C (Masayuki Moriyama) 20230523.5753 <161c (Yutaka Maeda) 20230524.3048 19.355zg (ZTF Alert DC mag (Masci+ 2019)) 20230602.5198 <160c (Yutaka Maeda) 20230603.5254 <163c (Yutaka Maeda) 20230604.5180 <159c (Yutaka Maeda) 20230605.2286 17.925zg (ZTF Alert DC mag (Masci+ 2019)) … [View More]

1 0

[vsnet-campaign-dn 17348] Mis V1449: new long-period SU UMa-type dwarf nova
by tonny.vanmunster＠gmail.com 08 Jun '23

08 Jun '23

Dear colleagues, I have just finished analysing my unfiltered CCD observations of Mis V1449 obtained on 2023, Jun 07/08 at CBA Belgium Observatory using a 0.40-m f/10.0 telescope and QHY-268M CMOS camera under clear skies. My observations were triggered by Taichi Kato's post in vsnet-alert 27825. The resulting light curve clearly shows the presence of regular superhumps with an amplitude of 0.29 mag, establishing Mis V1449 as a new SU UMa-type dwarf nova. A period analysis, using the … [View More]

1 0

[vsnet-campaign-dn 17347] MisV1449 rare outburst
by Taichi Kato 07 Jun '23

07 Jun '23

MisV1449 rare outburst Outburst in 2017 May and 2020 Sep. The 2017 one may have been a superoutburst (rebrightening in ATLAS?). The 2020 one was relatively short. Maybe a candidate for an SU UMa star above the period gap similar to SDSSJ094002.56+274942.0. YYYYMMDD(UT) mag observer 20230507.5783 17.109g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.5783 17.161g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.5134 <17.310g (ASAS-SN … [View More]

1 0

[vsnet-campaign-dn 17346] SDSSJ162830.89+240259.1 superhump period
by Taichi Kato 07 Jun '23

07 Jun '23

SDSSJ162830.89+240259.1 superhump period Josch Hambsch and Itoh-san have reported observations. The superhump period is 0.0701(1) d. Amplitude 0.18 mag.

1 0

[vsnet-campaign-dn 17345] ASASSN-22ak brightened again
by Taichi Kato 07 Jun '23

07 Jun '23

ASASSN-22ak brightened again Josch Hambsch has reported new observations. The object started to brighten again on June 3. This time, superhumps have not been enhanced.

1 0

[vsnet-campaign-dn 17344] GaiaDR32893005857946801152 = ASASSN-23dr, oscillation-type rebrightening
by Taichi Kato 07 Jun '23

07 Jun '23

GaiaDR32893005857946801152 = ASASSN-23dr, oscillation-type rebrightening Josch Hambsch and Maehara-san have reported additional observations. The object faded from superoutburst on May 30-31. After a short dip, the object now shows oscillation-type rebrightenings (like WZ Sge).

1 0

[vsnet-campaign-dn 17343] HS Vir indeed superoutburst
by Taichi Kato 07 Jun '23

07 Jun '23

HS Vir indeed superoutburst Josch Hambsch has recorded superhumps.

1 0

[vsnet-campaign-dn 17342] Carter_SDSSJ173047.59+554518.5 superhumps
by Taichi Kato 06 Jun '23

06 Jun '23

Carter_SDSSJ173047.59+554518.5 superhumps Itoh-san reported observations on June 5 and clear superhumps were visible. The outburst was possibly composed of early superhump-type superoutburst, dip and ordinary superoutburst (type E-like in hydrogen-rich WZ Sge stars).

1 0

[vsnet-campaign-dn 17341] SDSSJ162830.89+240259.1: superhumps
by Taichi Kato 06 Jun '23

06 Jun '23

SDSSJ162830.89+240259.1: superhumps Itoh-san recorded superhumps on June 5. According to http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/13491 G. Masi detected superhumps in 2011. The data are not in our record. If Masi still have the data, please send them to vsnet-campaign-report(a)ooruri.kusastro.kyoto-u.ac.jp

1 0

2025

2024

2023

2022

2021

vsnet-campaign-dn