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

[vsnet-newvar 9406] ASASSN-22jz: revised period of early superhumps
by Taichi Kato 24 Aug '22

24 Aug '22

ASASSN-22jz: revised period of early superhumps Using the period of ordinary superhumps, I re-analyzed the data reported in [vsnet-alert 26907]. The correct period of early superhumps was an one-day alias to vsnet-alert 26907. P(ESH)=0.05700(3) d.

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[vsnet-newvar 9405] PS1-3PIJ035747.16-063851.1 = Gaia DR3 324488617195639360 = ASASSN-22kc = ZTF19abuskjw: new SU UMa-type dwarf nova
by Taichi Kato 24 Aug '22

24 Aug '22

PS1-3PIJ035747.16-063851.1 = Gaia DR3 324488617195639360 = ASASSN-22kc = ZTF19abuskjw: new SU UMa-type dwarf nova Josch Hambsch and Itoh-san have reported observations. The object shows superhumps with a period of 0.05761(3) d (amplitude 0.10 mag).

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[vsnet-newvar 9404] MASTER OT J001204.00-412337.4: rebrightening
by Taichi Kato 17 Aug '22

17 Aug '22

MASTER OT J001204.00-412337.4: rebrightening Josch Hambsch has detected a rebrightening on Aug. 17. Having unusual outburst property, this object deserves continuous attention and time-resolved photometry.

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[vsnet-newvar 9403] ASASSN-22kc
by Naoto Kojiguchi 15 Aug '22

15 Aug '22

ASASSN-22kc Large outburst amplitude of 7 mag. Possible WZ Sge-type object. ASASSN-22kc -- ------- 3:57:47.12 -6:38:51.8 2022-08-13.4 13.19 SDSS DSS VIZIER ------- CV candidate, matches to PS1 g=20.0, g>16.8 on 2022-08-11.44, g=13.6 on 2022-08-13.40, g=13.1 on 2022-08-15.53 035747.168 -063851.281 Gaia_DR2_3244886171956393600 Plx=2.5019(0.4672) dismod=8.0 pmRA=-1.982(0.702) pmDE=-35.717(0.555) G=19.6294(0.0202) BP-RP=0.6357 E(g-r)=0.080 E(B-V)=0.071 Ag=0.281 Ar=0.209 Ai=0.158 035747.170 -063850.741 Gaia_EDR3_3244886171956393600 Plx=2.665(0.3351) dismod=7.9 PM=34.876 pmRA=-1.29(0.338) pmDE=-34.853(0.256) G=19.47956(0.009911) BP-RP=0.591627 E(g-r)=0.080 E(B-V)=0.071 Ag=0.281 Ar=0.209 Ai=0.158 035747.168 -063851.266 PS1_DR1_100020594464933394 g=20.0076(0.0316) r=19.7348(0.0354) i=19.8109(0.0245) z=19.6572(0.0378) y=19.5907(0.0383) 035747.161 -063851.112 PS1_DR2_100020594464933394 g=19.9729(0.012006) r=19.6526(0.010248) i=19.7928(0.01067) z=19.7759(0.020035) y=19.6977(0.046113) 035747.161 -063851.112 PS1_DR2_100020594464933394 g=19.9472(0.012111) r=19.6602(0.010789) i=19.7906(0.010697) z=19.7132(0.019595) y=19.7539(0.047272) 035747.170 -063850.680 SDSSJ035747.16-063850.6 ObsDate=1999.7823 u=20.029(20.029) g=20.11(0.023) r=19.978(0.028) i=19.977(0.039) z=19.616(0.119) 035747.168 -063850.773 SDSSJ035747.16-063850.7 ObsDate=2000.7378 u=19.867(19.867) g=19.98(0.019) r=19.73(0.019) i=19.873(0.031) z=19.722(0.104) ASAS-SN Sky Patrol https://asas-sn.osu.edu/sky-patrol/coordinate/93515a5f-cbb0-46d8-adfa-b3335… ZTF alert https://alerce.online/object/ZTF19abuskjw MPChecker NO DATA ASASSN-22kc 20220811.449 <16.007g ASN ASASSN-22kc 20220813.401 13.511g ASN ASASSN-22kc 20220813.605 13.243o ATF ASASSN-22kc 20220815.538 13.090g ASN ASASSN-22kc 20220815.543 13.471o ATF

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[vsnet-newvar 9402] ASASSN-22jz: new WZ Sge-type dwarf nova
by Taichi Kato 12 Aug '22

12 Aug '22

ASASSN-22jz: new WZ Sge-type dwarf nova Berto Monard has reported observations on two nights. The object was fading rather rapidly (0.3 mag/d), probably in viscous fading phase. Although there were much irregularity, I could detect a period of 0.05404(4) d (double wave, 0.035 mag). Although the profile is not very typical for early superhumps, the period appears to be real based on the appearance of one-day aliases. The rather unusual profile of early superhumps a result of their low amplitude and overlapping irregularity. Considering the outburst amplitude and peak M_V, this object can be identified to be a WZ Sge star.

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[vsnet-newvar 9401] PS1-3PIJ225724.61+480659.4=ZTFJ225724.61+480659.4=ZTF18aboshpo
by Taichi Kato 10 Aug '22

10 Aug '22

PS1-3PIJ225724.61+480659.4=ZTFJ225724.61+480659.4=ZTF18aboshpo https://www.aavso.org/vsx/index.php?view=detail.top&oid=2228285 Porb=0.1358156(7) d from ZTF data. Amplitude 0.18 mag.

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[vsnet-newvar 9400] ZTFJ061429.37+793024.1=ZTF18accmhht: polar
by Taichi Kato 10 Aug '22

10 Aug '22

ZTFJ061429.37+793024.1=ZTF18accmhht: polar Using ZTF data, I obtained a period of 0.0822436(2) d (single hump per orbit). The overall behavior also does not resemble that of a VY Scl star (too rapid fading and flat bottom).

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[vsnet-newvar 9399] ZTFJ050541.47+680015.1=ZTF18abwcfvv: NL+E
by Taichi Kato 10 Aug '22

10 Aug '22

ZTFJ050541.47+680015.1=ZTF18abwcfvv: NL+E https://www.aavso.org/vsx/index.php?view=detail.top&oid=2228287 According to Gaia variable stars, it was classified as 050541.4 +680014 (2000.0) Gaia_DR3_483798207282350976 ECL (score=0.48) 050541.4 +680014 (2000.0) Gaia_DR3_483798207282350976 vtype=E P=0.20496893(0.00000043) I obtained a period of 0.2049695(3) d using ZTF data. Typical NL+E light curve.

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[vsnet-newvar 9398] MASTER OT J001204.00-412337.4: strange behavior
by Taichi Kato 10 Aug '22

10 Aug '22

MASTER OT J001204.00-412337.4: strange behavior Josch Hambsch has reported new observations. The object started fading rapidly on Aug. 8. The duration of the superoutburst (8 d) is too short for a WZ Sge star. Observations of subsequent behavior are very important (the object still shows superhumps).

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[vsnet-newvar 9397] ASASSN-22jz: bright dwarf nova outburst (mag. 9.7) in Hydra
by Patrick Schmeer 08 Aug '22

08 Aug '22

ASASSN-22jz = AT 2022qwf (UG:) (submitted to VSX) Discovery circumstances: https://www.wis-tns.org/object/2022qwf Complete ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) light curve and data: https://asas-sn.osu.edu/sky-patrol/coordinate/6863cfab-4837-4bdd-bffb-552ee… ASASSN-22jz 20220805.9828 <16.47g ASN ASASSN-22jz 20220808.0109 10.22g ASN ASASSN-22jz 20220808.0121 9.74g ASN ASASSN-22jz 20220808.0133 9.77g ASN A DASCH search revealed a previous (super?)outburst recorded on Harvard plates: 1920 April 14.205 UT, mpg. 10.92 1920 April 14.250 UT, mpg. 11.01 1920 April 22.085 UT, mpg. 11.83 1920 April 22.216 UT, mpg. 11.33 ASASSN-22jz looks like a WZ Sge-type dwarf nova outburst (amplitude 9 magnitudes) at a distance of ~230 pc. Time-resolved photometry is urgently required. Clear skies, Patrick

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