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

[vsnet-alert 27739] 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-alert 27738] QS Tel low state (polar)
by Taichi Kato 12 May '23

12 May '23

QS Tel low state (polar) YYYYMMDD(UT) mag observer 20230323.3672 <18.321g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230328.3258 <18.528g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230329.3433 <18.004g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230330.1017 16.373g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230403.4127 <17.871g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230406.3018 <17.166g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230414.2952 <17.962g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230416.3240 <18.335g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230418.0318 15.757g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230426.2552 <18.222g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.0194 15.952g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.2412 <17.719g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.2269 <17.241g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.2295 <17.143g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.2295 <17.589g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.2908 <17.056g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.9500 16.467g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.9500 16.588g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.2116 <16.830g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.2116 <17.051g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27737] 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-alert 27736] 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-alert 27735] ASASSN-23dq ALTAS detection
by Taichi Kato 12 May '23

12 May '23

ASASSN-23dq ALTAS detection YYYYMMDD(UT) mag observer 20230508.4955 16.441o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.4996 16.386o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230508.5047 16.477o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27734] Re: EW Hya likely superoutburst
by Taichi Kato 12 May '23

12 May '23

Re: EW Hya likely superoutburst Recent data: YYYYMMDD(UT) mag observer 20230424.1649 19.357c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.1735 19.502c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.1852 19.551c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.9157 19.677o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.9222 19.450o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.9345 19.578o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.6131 <168C (Masayuki Moriyama) 20230506.1452 15.484o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230506.1485 15.499o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230506.1542 15.453o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230506.1673 15.452o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230506.2637 15.433o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230506.2996 15.535o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.8833 15.429o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.8871 15.345o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.8932 15.197o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.9032 15.176o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.1265 15.353o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.1294 15.403o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.1355 15.437o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.1469 15.503o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.8918 15.730o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.8947 15.723o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.9048 15.705o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230511.392 147 (Rod Stubbings) 20230511.617 147 (Rod Stubbings)

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[vsnet-alert 27733] EW Hya likely superoutburst
by Taichi Kato 12 May '23

12 May '23

EW Hya likely superoutburst Type from past outburst. Please make time-resolved photometry! YYYYMMDD(UT) mag observer 20230426.6131 <168C (Masayuki Moriyama) 20230511.392 147 (Rod Stubbings) 20230511.617 147 (Rod Stubbings)

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[vsnet-alert 27732] MASTER OT J111759.87+765131.6 superoutburst
by Taichi Kato 12 May '23

12 May '23

MASTER OT J111759.87+765131.6 superoutburst YYYYMMDD(UT) mag observer 20230423.4289 <18.233g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230423.4635 <18.508g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230424.2815 <18.894g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230425.4543 <18.314g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230426.574 <172C (Mitsutaka Hiraga) 20230426.5974 <163c (Yutaka Maeda) 20230427.6262 <143c (Yutaka Maeda) 20230501.6171 141cG (Yutaka Maeda) 20230505.2670 14.821g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.2470 14.882g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.2470 14.887g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.3204 15.401g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.5334 149cG (Yutaka Maeda)

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[vsnet-alert 27731] AR Pic superoutburst
by Taichi Kato 12 May '23

12 May '23

AR Pic superoutburst YYYYMMDD(UT) mag observer 20230503.0224 <17.106g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.0131 16.839g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.7097 <17.094g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.7097 <17.209g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.0064 12.915g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230511.425 131 (Rod Stubbings)

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[vsnet-alert 27730] V351 UMa outburst
by Taichi Kato 12 May '23

12 May '23

V351 UMa outburst Subtype unknonwn. No really long outburst in the past. YYYYMMDD(UT) mag observer 20230509.5977 173:C (Masayuki Moriyama) 20230509.972 <153 (Gary Poyner) 20230510.5293 154C (Masayuki Moriyama)

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