April 2022 - vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 16372] Gaia22bqc: very slowly rising SS Cyg star?
by Taichi Kato 19 Apr '22

19 Apr '22

Gaia22bqc: very slowly rising SS Cyg star? http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22bqc/ Gaia22bqc AT2022hrp 2022-03-28 10:27:56 254.81287 -25.76086 16.17 18.63 0.36 unknown 2022-04-18 19:10:57 ~3 mag rise in Gaia source

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[vsnet-campaign-dn 16371] Gaia22bop
by Taichi Kato 16 Apr '22

16 Apr '22

Gaia22bop http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22bop/ Gaia22bop AT2022hqz 2022-04-12 19:36:32 61.26115 35.49484 15.53 20.45 0.26 unknown 2022-04-16 09:08:25 ~5 mag outburst in Gaia source, candidate CV 040502.668 +352941.44 (2000.0) Gaia_DR2_219157376365314560 plx=2.770(1.058) dismod=7.8 pmra=12.650(2.783) pmdec=-7.481(1.135) G=20.487 BP=20.904 RP=19.532 040502.668 +352941.44 (2000.0) Gaia_EDR3_219157376365314560 plx=3.118(1.087) dismod=7.5 pmra=9.995(1.858) pmdec=-6.754(0.910) G=20.420 BP=20.887 RP=19.522

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[vsnet-campaign-dn 16370] V803 Cen: oscillation phase
by Taichi Kato 16 Apr '22

16 Apr '22

V803 Cen: oscillation phase According to observations by Josch Hambsch, V803 Cen is now oscillating phase with amplitudes of 0.8 mag and periods of 0.8 d.

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[vsnet-campaign-dn 16369] ASASSN-14je superoutburst
by Taichi Kato 15 Apr '22

15 Apr '22

ASASSN-14je superoutburst YYYYMMDD(UT) mag observer 20220328.0734 <162C (Masao Funada) 20220407.456 142 (Rod Stubbings) 20220409.494 143 (Rod Stubbings) Also http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22bnr/

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[vsnet-campaign-dn 16368] Re: EI UMa: bright outbursts recently
by Taichi Kato 14 Apr '22

14 Apr '22

Re: EI UMa: bright outbursts recently > ASAS-SN data: > https://asas-sn.osu.edu/sky-patrol/coordinate/cfa667b6-c1a4-4af8-8288-cddff… It appears that the outburst mode has changed since 2019 Sep. ASAS-SN show more outbursts with smaller amplitudes and I found a mean period of 56.4 d (which had not been detected by Reimer et al. (2008) ApJ 678, 376). The M_V of these outbursts were +3.6 at peak and look compatible with dwarf nova outbursts. Brighter multiple peaks with shorter durations reaching g=12.5 have M_V = +2.2 and they are not considered to be dwarf nova outbursts (support for IP outbursts).

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[vsnet-campaign-dn 16367] EI UMa: bright outbursts recently
by Taichi Kato 14 Apr '22

14 Apr '22

EI UMa: bright outbursts recently ASAS-SN data: https://asas-sn.osu.edu/sky-patrol/coordinate/cfa667b6-c1a4-4af8-8288-cddff… The 2022 Mar. event had multiple peaks and this looks like IP outbursts. The 2020 Oct. event had a longer duration and this could have been a dwarf nova outburst.

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[vsnet-campaign-dn 16366] ASASSN-13bm: likely superoutburst
by Taichi Kato 13 Apr '22

13 Apr '22

ASASSN-13bm: likely superoutburst YYYYMMDD(UT) mag observer 20220401.8045 <158c (Yutaka Maeda) 20220402.7996 <156c (Yutaka Maeda) 20220404.8103 <161c (Yutaka Maeda) 20220406.8031 <158c (Yutaka Maeda) 20220409.7556 143cG (Yutaka Maeda)

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[vsnet-campaign-dn 16365] ASASSN-21ie outburst
by Taichi Kato 12 Apr '22

12 Apr '22

ASASSN-21ie outburst Suspected SU UMa star from the ZTF data. YYYYMMDD(UT) mag observer 20220410.4815 16.716zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16364] ASASSN-15nz outburst
by Taichi Kato 12 Apr '22

12 Apr '22

ASASSN-15nz outburst Suspected SU UMa star from the ZTF data. YYYYMMDD(UT) mag observer 20220401.7016 <148c (Yutaka Maeda) 20220403.7041 <153c (Yutaka Maeda) 20220404.7070 <163c (Yutaka Maeda) 20220407.7025 <154c (Yutaka Maeda) 20220408.7041 <152c (Yutaka Maeda) 20220410.3330 15.838zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-campaign-dn 16363] RX Cha superoutburst
by Taichi Kato 12 Apr '22

12 Apr '22

RX Cha superoutburst YYYYMMDD(UT) mag observer 20220327.2154 <160C (Masao Funada) 20220407.476 146 (Rod Stubbings) 20220409.510 150 (Rod Stubbings) 20220411.471 150 (Rod Stubbings) Also: http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22bml/

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vsnet-campaign-dn April 2022