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

[vsnet-alert 26582] CRTS J172515.5+073249: relatively rare outburst
by Taichi Kato 15 Feb '22

15 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))

1 0

[vsnet-alert 26581] TCP J14420760-1758238: periodic variations
by Taichi Kato 14 Feb '22

14 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.

1 0

[vsnet-alert 26580] ASASSN-17jn long outburst
by Taichi Kato 13 Feb '22

13 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))

1 0

[vsnet-alert 26579] ASASSN-18vi most likely superoutburst (AM CVn)
by Taichi Kato 13 Feb '22

13 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))

1 0

[vsnet-alert 26578] CRTS J035318.1-034847 possible superoutburst
by Taichi Kato 13 Feb '22

13 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))

1 0

[vsnet-alert 26577] Z Cha superoutburst
by Taichi Kato 13 Feb '22

13 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)

1 0

[vsnet-alert 26576] WY Tri superhumps
by Taichi Kato 13 Feb '22

13 Feb '22

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

1 0

[vsnet-alert 26575] Re: TCP J14420760-1758238
by Taichi Kato 12 Feb '22

12 Feb '22

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

1 0

[vsnet-alert 26574] TCP J14420760-1758238
by Naoto Kojiguchi 11 Feb '22

11 Feb '22

TCP J14420760-1758238 Large outburst amplitude of 7 mag. Possible possible WZ Sge star. TCP J14420760-1758238 2022 02 11.8211* 14 42 07.60 -17 58 23.8 12.2 U Lib 9 0 2022 02 11.821 Discovered by Tadashi Kojima, Tsumagoi,Gunma-ken, Japan, on three frames(5_s exp) under limiting mag.= 13.5 taken by Canon EOS 6D + 200mm f/3.2 lens. Nothing is visible at this location taken on 2022 Feb10.809 UT under limiting mag.= 13.8,with same instrument http://www.cbat.eps.harvard.edu/unconf/followups/J14420760-1758238.html ASASSN Sky Patrol: https://asas-sn.osu.edu/sky-patrol/coordinate/d7bb8ce8-8af3-4a96-9e65-41e8d… #r=3.5arcsec 144207.822 -175822.608 PS1_DR1_86432205326582816 g=19.0939(0.011) r=19.0499(0.0136) i=18.9061(0.0115) z=18.62(0.0168) y=18.3811(0.0458) 144207.897 -175823.563 GALEXJ144207.8-175823 FUV=20.349(0.2513) NUV=19.912(0.0981) 144207.859 -175823.036 Gaia_DR2_6285355265244126080 Plx=3.4238(0.3135) pmRA=-35.799(0.743) pmDE=28.756(0.552) G=18.8162(0.0080) BP-RP=0.4707 144207.860 -175823.027 Gaia_EDR3_6285355265244126080 Plx=3.4024(0.2229) PM=45.966 pmRA=-36.297(0.228) pmDE=28.203(0.204) G=18.697046 (0.013996) BP-RP=0.537893

1 0

[vsnet-alert 26573] 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.

1 0