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

[vsnet-alert 26585] SDSS J033449.86-071047.8 superoutburst
by Taichi Kato 14 Feb '22

14 Feb '22

SDSS J033449.86-071047.8 superoutburst YYYYMMDD(UT) mag observer 20220212.1323 14.301zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220214.1773 14.823zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220214.1957 14.707zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26584] MASTER OT J191841.98+444914.5 outburst (AM CVn)
by Taichi Kato 14 Feb '22

14 Feb '22

MASTER OT J191841.98+444914.5 outburst (AM CVn) Likely superoutburst. YYYYMMDD(UT) mag observer 20220201.8847 <148c (Yutaka Maeda) 20220214.5170 15.999zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26583] ZTF J175758.83+242427.3 likely superoutburst (eclipsing)
by Taichi Kato 14 Feb '22

14 Feb '22

ZTF J175758.83+242427.3 likely superoutburst (eclipsing) Short (<100 d) supercycle. YYYYMMDD(UT) mag observer 20220213.4770 15.805zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20220213.4952 15.977zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26582] 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-alert 26581] 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-alert 26580] 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-alert 26579] 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-alert 26578] 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-alert 26577] 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-alert 26576] 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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