May 2023 - vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 17240] QZ Aqr superoutburst
by Taichi Kato 04 May '23

04 May '23

QZ Aqr superoutburst Still bright according to Funada-san. The last recorded superoutburst in 2008. YYYYMMDD(UT) mag observer 20230418.3567 <17.549g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230418.3592 <17.090g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230419.4061 13.866g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230422.3747 13.987g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230425.5853 14.147g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.3446 14.464g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230501.3367 14.425g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-campaign-dn 17239] ASASSN-15sn superoutburst
by Taichi Kato 04 May '23

04 May '23

ASASSN-15sn superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230421.751 <174C (Mitsutaka Hiraga) 20230422.5123 <18.033g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230425.5005 <18.081g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230427.4244 15.930zg (ZTF Alert DC mag (Masci+ 2019)) 20230427.4697 15.964zr (ZTF Alert DC mag (Masci+ 2019)) 20230501.4274 15.769zr (ZTF Alert DC mag (Masci+ 2019)) 20230502.8005 151c (Yutaka Maeda)

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[vsnet-campaign-dn 17238] ASASSN-23dj: dwarf nova or IP?
by Taichi Kato 04 May '23

04 May '23

ASASSN-23dj: dwarf nova or IP? Based on ATLAS data, this object did not show outbursts regularly. Short outbursts with an interval as short as 6 d. The fading rates would suggest a short period if we treat them at the face value, but it may also be an object like TV Col.

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[vsnet-campaign-dn 17237] Re: PTF1J071912.13+485834.0 superoutburst (AM CVn)
by Taichi Kato 03 May '23

03 May '23

Re: PTF1J071912.13+485834.0 superoutburst (AM CVn) The peak was already in April. YYYYMMDD(UT) mag observer 20230407.4857 <157c (Yutaka Maeda) 20230408.4957 <155c (Yutaka Maeda) 20230409.5123 <162c (Yutaka Maeda) 20230410.3050 19.183o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230410.4829 <156c (Yutaka Maeda) 20230411.2455 19.501zr (ZTF Alert DC mag (Masci+ 2019)) 20230412.2710 19.176c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230412.5146 <160c (Yutaka Maeda) 20230415.1987 19.493zr (ZTF Alert DC mag (Masci+ 2019)) 20230415.5492 <150c (Yutaka Maeda) 20230416.5857 <167C (Masayuki Moriyama) 20230417.4964 <158c (Yutaka Maeda) 20230421.1833 18.261zg (ZTF Alert DC mag (Masci+ 2019)) 20230421.2033 18.232zr (ZTF Alert DC mag (Masci+ 2019)) 20230421.5104 <145c (Yutaka Maeda) 20230422.2421 17.105c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230422.2461 17.014c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230422.2515 16.955c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230422.2688 16.910c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230422.4941 <153c (Yutaka Maeda) 20230424.2360 15.925c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.2391 15.914c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.2448 15.974c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.2549 15.957c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.4903 <157c (Yutaka Maeda) 20230426.5346 <170C (Masayuki Moriyama) 20230427.5192 <156c (Yutaka Maeda) 20230430.4981 <158c (Yutaka Maeda) 20230501.1840 16.320zg (ZTF Alert DC mag (Masci+ 2019)) 20230501.2044 16.535zr (ZTF Alert DC mag (Masci+ 2019)) 20230501.5083 <155c (Yutaka Maeda) 20230501.5391 166:C (Masayuki Moriyama) 20230502.2701 16.842o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.2936 17.028o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.2968 16.865o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-campaign-dn 17236] MASTER OT J131320.24+692649.1 superoutburst
by Taichi Kato 03 May '23

03 May '23

MASTER OT J131320.24+692649.1 superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230426.517 <176C (Mitsutaka Hiraga) 20230426.5733 <160c (Yutaka Maeda) 20230427.6008 <145c (Yutaka Maeda) 20230430.5811 156c (Yutaka Maeda) 20230430.5812 156c (Yutaka Maeda) 20230501.5908 151cG (Yutaka Maeda) 20230501.5908 151cG (Yutaka Maeda) 20230501.7604 15.43C (Masayuki Moriyama) 20230502.4630 15.370g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-campaign-dn 17235] PTF1J071912.13+485834.0 superoutburst (AM CVn)
by Taichi Kato 03 May '23

03 May '23

PTF1J071912.13+485834.0 superoutburst (AM CVn) YYYYMMDD(UT) mag observer 20230430.4981 <158c (Yutaka Maeda) 20230501.1840 16.320zg (ZTF Alert DC mag (Masci+ 2019)) 20230501.2044 16.535zr (ZTF Alert DC mag (Masci+ 2019)) 20230501.5083 <155c (Yutaka Maeda) 20230501.5391 166:C (Masayuki Moriyama)

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[vsnet-campaign-dn 17234] Gaia23bql: WZ Sge star 1 month past the peak?
by Taichi Kato 03 May '23

03 May '23

Gaia23bql: WZ Sge star 1 month past the peak? http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bql/ Gaia23bql AT2023hng 2023-04-25 12:41:42 175.88031 -70.17583 17.32 unknown 2023-05-02 08:40:30 Apparently hostless transient There may have been a dip on Apr. 29 in ATLAS data. YYYYMMDD(UT) mag observer 20230407.1642 15.923o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230407.1673 16.047o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230407.1728 16.001o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230407.1848 15.872o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.9198 16.387o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.9226 16.307o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.9283 16.386o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.9384 16.432o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230413.0391 16.818c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230413.0419 16.671c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230413.0481 16.643c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230413.0602 16.691c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.9051 17.291o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.9079 16.913o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.9137 16.655o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.9238 16.744o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9100 16.940o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9130 16.965o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9183 16.861o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9286 16.873o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1451 17.104c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1484 17.038c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1544 17.082c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1663 17.055c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.2693 17.287c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.2721 17.318c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.2987 17.446c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3043 17.566c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.8858 17.385o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.8888 17.436o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.8986 17.453o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9051 17.633o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8782 18.112o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8843 18.673o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8942 18.325o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1772 17.992o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2005 17.998o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2166 18.100o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-campaign-dn 17233] ASASSN-23dk ATLAS detection
by Taichi Kato 03 May '23

03 May '23

ASASSN-23dk ATLAS detection The fading rate may suggest a WZ Sge star. YYYYMMDD(UT) mag observer 20230428.7825 15.219o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.8055 15.202o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.8250 15.142o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.7545 15.576o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.7582 15.596o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.7657 15.595o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-campaign-dn 17232] ASASSN-23dl ATLAS detection
by Taichi Kato 03 May '23

03 May '23

ASASSN-23dl ATLAS detection YYYYMMDD(UT) mag observer 20230429.8682 16.520o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8716 16.525o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8778 16.527o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8876 16.565o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1758 16.688o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1801 16.731o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1857 16.673o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1959 16.771o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-campaign-dn 17231] TCP J16064415-1611467: new WZ Sge-type dwarf nova
by Taichi Kato 03 May '23

03 May '23

TCP J16064415-1611467: new WZ Sge-type dwarf nova The most recent data by Itoh-san on May 2 (longer run than in the past) seem to show apparent early superhumps. Only the initial data (vsnet-alert 27686) appears to be anomalous. The combined data with Hambsch's (but not ver helpful) has yielded a period of 0.05633(5) d, characteristic double peaks and a full amplitude of 0.07 mag.

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