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

[vsnet-campaign-dn 17270] TCP J18460168-4355383: ATLAS detection
by Taichi Kato 14 May '23

14 May '23

TCP J18460168-4355383: ATLAS detection YYYYMMDD(UT) mag observer 20230513.1919 15.766o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230513.1948 15.740o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230513.2005 15.781o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-campaign-dn 17269] Gaia17aoz: unusual dwarf nova with multiple rebrightenings
by Taichi Kato 14 May '23

14 May '23

Gaia17aoz: unusual dwarf nova with multiple rebrightenings Based on ATLAS and ZTF. Superoutbursts with multiple rebrightenings in 2019-2020 and 2022 (this one was very clear). Rebrightenings longer than in AM CVn stars. The interval less than 3 yr is exceptionally short for a WZ Sge star with multiple rebrightenings.

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[vsnet-campaign-dn 17268] ASASSN-14hq outburst
by Taichi Kato 13 May '23

13 May '23

ASASSN-14hq outburst Somewhat atypical behavior. Rising to superoutburst? (UGSU+E) YYYYMMDD(UT) mag observer 20230505.0384 16.817g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.0384 16.841g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.0384 <16.947g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.0384 <17.186g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.0384 <17.196g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.7248 18.197o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230505.7286 18.416o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230505.7386 18.239o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230505.7438 18.245o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230506.7782 14.202g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.7782 14.251g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.7782 14.313g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.7782 14.342g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230508.7277 15.343g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230508.7277 15.489g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230508.7320 15.498o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.7352 15.519o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.7403 15.569o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.7507 17.104o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.7078 <17.073g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.7091 <17.448g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230511.7084 17.468c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.7136 18.073c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.7165 17.668c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.7278 17.789c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.0088 17.258g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230512.0088 <17.239g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230513.435 158 (Rod Stubbings)

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[vsnet-campaign-dn 17267] V344 Pav likely superoutburst
by Taichi Kato 13 May '23

13 May '23

V344 Pav likely superoutburst YYYYMMDD(UT) mag observer 20230506.3045 <16.898g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.3045 <17.263g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230513.590 144 (Rod Stubbings)

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[vsnet-campaign-dn 17266] TCP J11260724-5706041 ATLAS datection
by Taichi Kato 13 May '23

13 May '23

TCP J11260724-5706041 ATLAS datection http://cbat.eps.harvard.edu/unconf/followups/J11260724-5706041.html YYYYMMDD(UT) mag observer 20230508.8525 15.739o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.8602 15.681o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.8635 15.682o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.8750 15.573o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) Past outburst YYYYMMDD(UT) mag observer 20220428.9051 15.241o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20220428.9084 15.258o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20220428.9135 15.230o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20220428.9237 15.240o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20220501.0817 17.480o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20220501.0845 17.420o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20220501.0896 17.717o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20220501.1002 17.512o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20220505.1689 18.856o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20220505.1773 19.026o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-campaign-dn 17265] Re: CRTS J165803.7+143634 likely superoutburst
by Taichi Kato 13 May '23

13 May '23

Re: CRTS J165803.7+143634 likely superoutburst More data: 20230506.3113 <16.402g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.9851 17.498o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230506.9869 17.498o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.0084 17.630o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.0237 17.255o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.3891 15.543g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.3891 15.635g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230508.2786 16.168o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.3135 16.166o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.3167 16.190o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.3247 16.203o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.2722 16.165o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.3006 16.322o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.3038 16.485o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.5652 15.828g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.6390 16.55C (Masayuki Moriyama) 20230511.4579 15.914zg (ZTF Alert DC mag (Masci+ 2019)) 20230511.4892 16.177g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230511.7483 16.02C (Masayuki Moriyama)

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[vsnet-campaign-dn 17264] CRTS J165803.7+143634 likely superoutburst
by Taichi Kato 13 May '23

13 May '23

CRTS J165803.7+143634 likely superoutburst Superoutburst + rebrightening in 2022 Feb. (ZTF data) YYYYMMDD(UT) mag observer 20230506.3113 <16.402g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.3891 15.543g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.3891 15.635g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.5652 15.828g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.6390 16.55C (Masayuki Moriyama) 20230511.4579 15.914zg (ZTF Alert DC mag (Masci+ 2019)) 20230511.4892 16.177g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230511.7483 16.02C (Masayuki Moriyama)

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[vsnet-campaign-dn 17263] GS Pav standstill
by Taichi Kato 12 May '23

12 May '23

GS Pav standstill 20230422.2793 15.976g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230422.3287 15.895g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230424.2547 16.013g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230424.4239 16.070g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230424.639 <154 (Rod Stubbings) 20230425.3122 16.188g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230425.651 163 (Rod Stubbings) 20230426.2660 16.084g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230427.0692 15.950g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.3061 15.898g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.2575 15.875g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.2924 17.762g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.3318 15.992g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.590 154 (Rod Stubbings) 20230429.649 163 (Rod Stubbings) 20230430.2566 15.931g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.2756 15.959g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.3598 15.830g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230502.2537 16.559g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230502.3152 16.041g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230502.3152 16.151g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.2346 15.968g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.2921 15.839g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.2921 15.913g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.3166 15.71C (Masao Funada) 20230504.2447 15.741g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.2447 15.816g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.2870 15.995g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.2870 15.999g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.3208 16.198g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.3208 16.221g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.2631 15.889g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.2631 16.108g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.2930 15.814g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-campaign-dn 17262] Please also observe ASASSN-22ak (southern object)
by Taichi Kato 12 May '23

12 May '23

Please also observe ASASSN-22ak (southern object) Josch Hambsch has been reporting observations. The data, however, were not sampled sufficiently and it is difficult to find a period. There is a suggestion of a period of 0.0453 d (consistent with the rapid fading observed in the 2022 superoutburst?). This object underwent the first-known outburst in 2022 Jan. (long after a dormant period?) and repeated unusual outbursts since then. The current outburst is the fourth one. Although there may be another outburst later in this year, there may be no guarantee since the present activity is a transiently enhanced one (as in V3101 Cyg). So I recommend to observe every outburst as closely as possible.

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[vsnet-campaign-dn 17261] Gaia DR3 2893005857946801152 = ASASSN-23dr: most likely WZ Sge star
by Taichi Kato 12 May '23

12 May '23

Gaia DR3 2893005857946801152 = ASASSN-23dr: most likely WZ Sge star Berto Monard and Josch Hambsch have reported observations. Using Monard's data, there appears to be a period of 0.05452(5) d with a double-peaked profile. The result, however, is preliminary since the amplitude was small (0.03 mag) and observations are still limited. I used the name Gaia DR3 2893005857946801152 since this object was selected as a variable by Gaia (there was probably simply no concept of a dwarf nova in quiescence and was classified as a WD). Please feel free to use ASASSN-23dr since it is much shorter.

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vsnet-campaign-dn May 2023