February 2022 - vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 16248] CRTS J172515.5+073249: relatively rare outburst
by Taichi Kato 14 Feb '22

14 Feb '22

CRTS J172515.5+073249: relatively rare outburst YYYYMMDD(UT) mag observer 20210927.1740 20.916zg (Zwicky Transient Facility (Masci et al., 2019)) 20211014.8681 <177C (Eddy Muyllaert) 20211021.8472 <172C (Eddy Muyllaert) 20211103.8333 <163C (Eddy Muyllaert) 20220107.2938 <163C (Eddy Muyllaert) 20220213.4971 15.400zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16247] TCP J14420760-1758238: periodic variations
by Taichi Kato 13 Feb '22

13 Feb '22

TCP J14420760-1758238: periodic variations Observations by Itoh-san and Kiyota-san recorded periodic variations with a period of 0.0353(6) d and an amplitude of 0.04 mag. The profile somewhat looks like that of early superhumps. Since this period is too short for a hydrogen-rich WZ Sge star, further observations are needed to clarify the nature.

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[vsnet-campaign-dn 16246] ASASSN-17jn long outburst
by Taichi Kato 12 Feb '22

12 Feb '22

ASASSN-17jn long outburst YYYYMMDD(UT) mag observer 20220121.5572 16.879zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220121.5597 16.909zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220121.5648 16.921zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220121.5673 16.918zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220211.5095 17.610zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16245] ASASSN-18vi most likely superoutburst (AM CVn)
by Taichi Kato 12 Feb '22

12 Feb '22

ASASSN-18vi most likely superoutburst (AM CVn) Supercycle about two years. Multiple rebrightenings in the past superoutbursts in the ZTF data. YYYYMMDD(UT) mag observer 20220211.5105 16.524zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220211.5317 16.842zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16244] CRTS J035318.1-034847 possible superoutburst
by Taichi Kato 12 Feb '22

12 Feb '22

CRTS J035318.1-034847 possible superoutburst Subtype based on past ZTF data. YYYYMMDD(UT) mag observer 20220212.1527 15.614zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16243] Z Cha superoutburst
by Taichi Kato 12 Feb '22

12 Feb '22

Z Cha superoutburst YYYYMMDD(UT) mag observer 20220204.535 162 (Rod Stubbings) 20220205.551 162 (Rod Stubbings) 20220206.556 120 (Rod Stubbings) 20220206.560 127 (Rod Stubbings) 20220206.564 126 (Rod Stubbings) 20220206.567 123 (Rod Stubbings) 20220206.571 120 (Rod Stubbings) 20220206.576 123 (Rod Stubbings) 20220206.581 120 (Rod Stubbings) 20220207.542 116 (Rod Stubbings) 20220208.490 120 (Rod Stubbings) 20220211.481 120 (Rod Stubbings) 20220212.683 120 (Rod Stubbings)

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[vsnet-campaign-dn 16242] WY Tri superhumps
by Taichi Kato 12 Feb '22

12 Feb '22

WY Tri superhumps Itoh-san detected superhumps on Feb. 11.

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[vsnet-campaign-dn 16241] Re: TCP J14420760-1758238
by Taichi Kato 11 Feb '22

11 Feb '22

Re: TCP J14420760-1758238 Superoutburst reaching V=12.0 in 2001 in ASAS-3.

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[vsnet-campaign-dn 16240] ASASSN-20pv: long rebrightening
by Taichi Kato 10 Feb '22

10 Feb '22

ASASSN-20pv: long rebrightening The object (AM CVn) is now entering a long (standstill-like) rebrightening as in the 2020-2021 superoutburst. The CCD observers are Berto Monard and Josch Hambsch.

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[vsnet-campaign-dn 16239] NSV 5031: updated period of superhumps
by Taichi Kato 10 Feb '22

10 Feb '22

NSV 5031: updated period of superhumps Based on the data by Berto Monard, Itoh-san and Josch Hambsch, the period of superhumps has been updated to 0.07505(1) d. Very clear superhumps.

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