September 2021 - vsnet-newvar - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-newvar 8775] Re: ASASSN-21rt = ZTF21acahuzg
by Taichi Kato 14 Sep '21

14 Sep '21

Re: ASASSN-21rt = ZTF21acahuzg GALEX ID: 222658.619 +225446.50 (2000.0) GALEX_DR5_6376193502565371439 NUV=22.400(0.425) FUV=-(-)

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[vsnet-newvar 8774] ASASSN-21rt = ZTF21acahuzg
by Naoto Kojiguchi 14 Sep '21

14 Sep '21

ASASSN-21rt = ZTF21acahuzg Large outburst amplitude of 7 mag. Possible WZ Sge-type object. ASASSN-21rt --- ------- 22:26:58.89 22:54:47.5 2021-09-14.07 15.15 ------- CV candidate, matches to SDSS g=22.0, g>17.5 on 2021-09-08.28, g=17.5 on 2021-09-10.28, g=15.1 on 2021-09-11.88, g=15.4 on 2021-09-14.097. IDs: 222658.803 +225448.160 SDSSJ222658.80+225448.1 ObsDate=2004.7123 u=23.406(0.890) g=22.070(0.120) r=22.308(0.232) i=22.225(0.299) z=22.223(0.713) 222658.805 +225448.056 SDSSJ222658.80+225448.0 ObsDate=2008.7511 u=22.644(0.399) g=22.970(0.196) r=22.392(0.172) i=22.351(0.259) z=22.637(0.741) YYYYMMDD(UT) mag observer 20210908.285 <16.563g ASN 20210908.512 20.849o ATF 20210910.225 18.806zg ZLR 20210910.286 <17.301g ASN 20210910.355 17.180cy ATF 20210910.372 17.177zr ZLR 20210911.887 15.086g ASN 20210912.257 15.108zg ZLR 20210912.407 15.476o ATF 20210914.097 15.265g ASN 20210914.245 15.552zr ZLR 20210914.275 15.308zg ZLR ATF (ATLAS Forced Photometry (Tonry et al. 2018)) ASN (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) ZLR (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 8773] MASTER OT J055845.55+391533.4 superoutburst
by Taichi Kato 14 Sep '21

14 Sep '21

MASTER OT J055845.55+391533.4 superoutburst The 2021 Jan.-Feb. and 2018 Apr. superoutbursts showed a dip and a long rebrightening. YYYYMMDD(UT) mag observer 20210828.8465 <142c (Yutaka Maeda) 20210829.8457 <146c (Yutaka Maeda) 20210830.8308 <162c (Yutaka Maeda) 20210831.8157 <156c (Yutaka Maeda) 20210909.7884 146:cG (Yutaka Maeda) 20210911.1820 14.20cG (Masao Funada)

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[vsnet-newvar 8772] ASASSN-18vb outburst
by Taichi Kato 14 Sep '21

14 Sep '21

ASASSN-18vb outburst SS Cyg star or a superoutburst? Time-resolved observations are desirable. YYYYMMDD(UT) mag observer 20210621.4470 20.679zg (Zwicky Transient Facility (Masci et al., 2019)) 20210625.3917 20.246zr (Zwicky Transient Facility (Masci et al., 2019)) 20210628.4482 20.847zr (Zwicky Transient Facility (Masci et al., 2019)) 20210908.3184 14.816zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210908.3185 14.816zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210908.3704 15.040zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210908.3706 15.040zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210910.3879 15.021zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210910.4309 14.733zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210910.4311 14.733zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210912.3542 14.729zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-newvar 8771] ATOJ096.2674+36.4428: NL
by Taichi Kato 13 Sep '21

13 Sep '21

ATOJ096.2674+36.4428: NL Flickering in ZTF time-resolved data. 2MASS 062504.164 +362634.23 (2000.0) 16.102 16.357 15.581 062504.1 +362634 (2000.0) ATOJ096.2674+36.4428 dubious c=16.678 o=16.685 P(LS)=0.122339 rms=0.13 062504.1 +362634 (2000.0) PS1RRJ062504.18+362634.4 RR g=15.95(0.61) P=0.41126 0.02/0.04 062504.1 +362634 (2000.0) ZTFJ062504.19+362634.5 g=16.666 (16.469-16.829) P=0.0171 062504.192 +362634.38 (2000.0) Gaia_DR2_954810331284906496 plx=0.503(0.079) dismod=11.5 pmra=0.980(0.119) pmdec=0.224(0.108) G=16.581 BP=16.605 RP=16.331 062504.192 +362634.38 (2000.0) Gaia_EDR3_954810331284906496 plx=0.407(0.055) dismod=12.0 pmra=1.049(0.061) pmdec=0.172(0.051) G=16.554 BP=16.621 RP=16.361

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[vsnet-newvar 8770] ATOJ336.1027+43.0075: NL
by Taichi Kato 13 Sep '21

13 Sep '21

ATOJ336.1027+43.0075: NL Flickering in ZTF time-resolved data. 2MASS 222424.642 +430027.40 (2000.0) 16.633 16.575 15.948 222424.6 +430027 (2000.0) ATOJ336.1027+43.0075 dubious c=17.085 o=17.078 P(LS)=0.967777 rms=0.16 222424.6 +430027 (2000.0) Gaia_DR2_1958656033606852864 group_C3 g=17.130(0.091) Mowlavi2020 222424.670 +430027.22 (2000.0) Gaia_DR2_1958656033606852864 plx=0.643(0.090) dismod=11.0 pmra=-0.725(0.136) pmdec=-5.228(0.147) G=17.130 BP=17.193 RP=16.904 222424.670 +430027.22 (2000.0) Gaia_EDR3_1958656033606852864 plx=0.685(0.061) dismod=10.8 pmra=-0.569(0.057) pmdec=-5.229(0.060) G=17.129 BP=17.210 RP=16.920

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[vsnet-newvar 8769] MGAB-V1286: UGZ+E
by Taichi Kato 13 Sep '21

13 Sep '21

MGAB-V1286: UGZ+E Type from ZTF data. Porb=0.1472759(2) d. Eclipse epoch: BJD 2458657.449, depth 0.6 mag.

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[vsnet-newvar 8768] ASASSN-21rm: new likely WZ Sge-type dwarf nova
by Taichi Kato 13 Sep '21

13 Sep '21

ASASSN-21rm: new likely WZ Sge-type dwarf nova Tamas Tordai has reported observations. The object showed humps on Sep. 11. The period was 0.0548(6) d and the amplitude was 0.14 mag. The profile resembles that of early superhumps. Combined with the large outburst amplitude, this object is likely a WZ Sge star.

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[vsnet-newvar 8767] ASASSN-17ik: new SU UMa-type dwarf nova
by Taichi Kato 13 Sep '21

13 Sep '21

ASASSN-17ik: new SU UMa-type dwarf nova Tamas Tordai has reported observations. The object showed superhumps on Sep. 9. The period was 0.0591(6) d and the amplitude was 0.14 mag. This confirms the suggestion in vsnet-alert 26221.

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[vsnet-newvar 8766] CRTSJ091936.6-055519: period of polar
by Taichi Kato 10 Sep '21

10 Sep '21

CRTSJ091936.6-055519: period of polar From ZTF data. Rather noisy but likely Porb=0.0724273(4) d. Single maximum per period.

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