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

[vsnet-alert 27742] 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-alert 27741] 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-alert 27740] 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-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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