November 2021 - vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 26431] ASASSN-15ap possible superoutburst
by Taichi Kato 15 Nov '21

15 Nov '21

ASASSN-15ap possible superoutburst Established SU UMa star. YYYYMMDD(UT) mag observer 20211113.4181 15.552zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26430] ASASSN-20cz outburst
by Taichi Kato 15 Nov '21

15 Nov '21

ASASSN-20cz outburst Subtype unknown. YYYYMMDD(UT) mag observer 20211107.4575 17.242zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211107.4779 17.459zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211111.3928 15.681zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211111.4032 15.722zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211113.4191 15.766zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26429] ASASSN-17ag superhumps
by Taichi Kato 15 Nov '21

15 Nov '21

ASASSN-17ag superhumps Observations by Itoh-san clearly detected superhumps. Since the 2019 observation covered only a single night, subsequent observations during the current superoutburst provides an opportunity to obtain an accurate superhump period.

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[vsnet-alert 26428] Spectrum of TCP J17242302+3258109
by Kenta TAGUCHI 15 Nov '21

15 Nov '21

Spectrum of TCP J17242302+3258109 We reported optical spectrum of TCP J17242302+3258109 to ATel: https://www.astronomerstelegram.org/?read=15035 Our spectrum confirms that this object is a dwarf nova, as expected. -- ________________________________________________________________ 田口健太　(TAGUCHI, Kenta) 京都大学大学院理学研究科宇宙物理学教室 (Department of Astronomy, Graduate School of Science, Kyoto University) kentagch(a)kusastro.kyoto-u.ac.jp 09090536980

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[vsnet-alert 26427] M31N 2008-12a in outburst !!!
by tonny.vanmunster＠gmail.com 15 Nov '21

15 Nov '21

Dear colleagues, Looking at my unfiltered CMOS observations of M31N 2008-12a, which I'm acquiring right now, this object is in outburst !!! More details and magnitude estimates will be provided in about 1-2 hours, after having collected more observations. Best regards Tonny --- Tonny Vanmunster CBA Belgium Observatory CBA Extremadura Observatory http://www.cbabelgium.com PERANSO : The Light Curve and Period Analysis Software http://www.peranso.com

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[vsnet-alert 26426] TCP J17242302+3258109 = ZTFJ172422.91+325812.5
by Taichi Kato 14 Nov '21

14 Nov '21

TCP J17242302+3258109 = ZTFJ172422.91+325812.5 mag 13.3 on Nov. 13 http://www.cbat.eps.harvard.edu/unconf/followups/J17242302+3258109.html 172422.9 +325812 (2000.0) ZTFJ172422.91+325812.5 susp g=20.934 r=20.726 amp=0.962 P=230.1001600 logfalse=-2.992 172422.944 +325811.74 (2000.0) GALEX_DR5_6371513930611688052 NUV=21.700(0.346) FUV=-(-)

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[vsnet-alert 26425] Re: XM78HT rebrightening
by Taichi Kato 14 Nov '21

14 Nov '21

Re: XM78HT rebrightening According to observations by Tamas Tordai, this rebrightening already started on Nov. 11 (no observations on Nov. 10). The fading was "dip" type. Long rebrightening is expected.

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[vsnet-alert 26424] ASASSN-18wi likely superoutburst
by Taichi Kato 14 Nov '21

14 Nov '21

ASASSN-18wi likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20211113.1105 17.036zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26423] CRTS J120052.9-152620 likely superoutburst
by Taichi Kato 14 Nov '21

14 Nov '21

CRTS J120052.9-152620 likely superoutburst Known SU UMa star. http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia21fdi/ Gaia21fdi AT2021aena 2021-11-11 20:19:06 180.22037 -15.43900 14.56 17.51 1.49 unknown 2021-11-13 14:40:40 outburst in candidate CV

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[vsnet-alert 26422] XM78HT rebrightening
by Hiroshi Itoh 13 Nov '21

13 Nov '21

XM78HT is rebrightening to 16.58mag on Nov 13. Hiroshi Itoh (VSOLJ)

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vsnet-alert November 2021