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

[vsnet-newvar 10235] Re: Wils_SDSSJ091741.29+073647.4 = TCPJ09174122+0736487: new SU UMa-type dwarf nova
by Taichi Kato 15 Jan '24

15 Jan '24

Re: Wils_SDSSJ091741.29+073647.4 = TCPJ09174122+0736487: new SU UMa-type dwarf nova > Itoh-san reported observations on four nights and detected > developing superhumps since Jan. 13. The superhump period is > 0.06462(8) d (stage A or A+B combined). The current amplitude > is 0.2 mag. Josch Hambsch also reported the same object (=ASASSN-24af). The combined data (mean epoch of the data slightly earlier) yielded a longer period of 0.06487(5) d, probably more reflecting stage A superhumps.

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[vsnet-newvar 10234] Wils_SDSSJ091741.29+073647.4 = TCPJ09174122+0736487: new SU UMa-type dwarf nova
by Taichi Kato 15 Jan '24

15 Jan '24

Wils_SDSSJ091741.29+073647.4 = TCPJ09174122+0736487: new SU UMa-type dwarf nova Itoh-san reported observations on four nights and detected developing superhumps since Jan. 13. The superhump period is 0.06462(8) d (stage A or A+B combined). The current amplitude is 0.2 mag.

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[vsnet-newvar 10233] Gaia18bvd = ASASSN-24ab: new SU UMa-type dwarf nova
by Taichi Kato 10 Jan '24

10 Jan '24

Gaia18bvd = ASASSN-24ab: new SU UMa-type dwarf nova Josch Hambsch has reported observations on two nights. Superhumps with a period of 0.06363(7) d and an amplitude of 0.20 mag were clearly detected.

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[vsnet-newvar 10232] ATLAS23xus = TCPJ03433597-1153124: superhump period
by Taichi Kato 07 Jan '24

07 Jan '24

ATLAS23xus = TCPJ03433597-1153124: superhump period Current period: 0.05565(2) d. Amplitude: 0.12 mag Observers: Itoh-san, Berto Monard, Greg Bolt

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[vsnet-newvar 10231] Gaia24aaq: new SU UMa-type dwarf nova
by Taichi Kato 07 Jan '24

07 Jan '24

Gaia24aaq: new SU UMa-type dwarf nova Berto Monard reported observations on four nights. Superhumps were present on three nights. The period is 0.05527(2) d and the amplitude is 0.21 mag.

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[vsnet-newvar 10230] ATLAS23xus = TCPJ03433597-1153124: ordinary superhumps
by Taichi Kato 04 Jan '24

04 Jan '24

ATLAS23xus = TCPJ03433597-1153124: ordinary superhumps The most recent data (Jan. 2) by Itoh-san recorded probable ordinary superhumps (rather fragmentary data). The long waiting time and the large outburst amplitude suggest a WZ Sge star.

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[vsnet-newvar 10229] CRTS J204618.0-312128 likely superoutburst
by Taichi Kato 15 Dec '23

15 Dec '23

CRTS J204618.0-312128 likely superoutburst Based on past supercycle in ASAS-SN Sky Patrol Photom. DB. YYYYMMDD(UT) mag observer 20231127.0453 <16.522g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231127.0453 <16.820g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231128.0308 <17.032g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231128.0320 <16.458g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231129.0398 <17.621g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231129.0398 <17.800g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20231202.4312 <161C (Masayuki Moriyama) 20231213.3959 15.00C (Masayuki Moriyama)

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[vsnet-newvar 10228] Re: SwiftJ1727.8-1613: superhumps?
by Taichi Kato 11 Dec '23

11 Dec '23

Re: SwiftJ1727.8-1613: superhumps? (Re: [vsnet-alert 27954] SwiftJ1727.8-1613: superhumps?, Sep. 23) Using the available data since then, the current preferred period is 0.14088(3) d (mean amplitude 0.07 mag, singly peaked). The period of 0.2116(1) d in [vsnet-alert 27954] was 1.5 times of this period.

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[vsnet-newvar 10227] TCP J04251906+2841462: ordinary superhumps
by Taichi Kato 06 Dec '23

06 Dec '23

TCP J04251906+2841462: ordinary superhumps According to Itoh-san's observations, this object showed ordinary superhumps since Dec. 3. The current period is 0.05510(4) d. The large amplitude (0.18 mag) seems to preclude a very low-q object.

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[vsnet-newvar 10226] TCP J02011347+0139431: new WZ Sge-type dwarf nova
by Taichi Kato 06 Dec '23

06 Dec '23

TCP J02011347+0139431: new WZ Sge-type dwarf nova Itoh-san and Kiyota-san detected early superhumps on two consecutive nights. Typical double-wave modulations with a period of 0.05746(5) d (full amplitude 0.06 mag).

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