May 2023 - vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 27726] V415 Lyr possible superoutburst
by Taichi Kato 11 May '23

11 May '23

V415 Lyr possible superoutburst The past light curve looks like that of an SU UMa star with an unresolved brighter companion. If this interpretation is correct, the current outburst looks like a superoutburst. YYYYMMDD(UT) mag observer 20230429.3577 17.114g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.7859 <149c (Yutaka Maeda) 20230501.7971 <155c (Yutaka Maeda) 20230507.4282 15.545g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.4324 15.644g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.7242 <160c (Yutaka Maeda) 20230509.7782 160C (Masayuki Moriyama) 20230510.3641 15.697g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27725] ASASSN-23dr = AT 2023hsr: possible WZ Sge-type dwarf nova
by Naoto Kojiguchi 09 May '23

09 May '23

ASASSN-23dr = AT 2023hsr: possible WZ Sge-type dwarf nova Large outburst amplitude of more than 8 mag. Gaia quiescent absolute magnitude: M_G=+11.8. Possible WZ Sge-type dwarf nova. TNS: https://www.wis-tns.org/object/2023hsr RA/DEC (2000): 06:22:11.124 -32:36:33.84 Reporting Group: ASAS-SN Discovering Data Source: ASAS-SN Discovery Date: 2023-05-08 00:43:12.000 Discovery Mag: 11.5 Filter: g-Sloan Reporter/s: K. Z. Stanek, for the ASAS-SN team IDs: USNO0525.02348016 062210.973 -323633.44 (2000.0) 19.1 19.7 062211.116 -323633.89 (2000.0) Gaia_DR2_2893005857946801152 plx=3.813(0.207) dismod=7.1 pmra=2.423(0.334) pmdec=-0.799(0.381) G=18.974 BP=19.040 RP=18.779 062211.1 -323633 (2000.0) Gaia_DR3_2893005857946801152 plx=3.7645(0.1598) PM=2.359 pmra=2.225(0.168) pmdec=-0.782(0.178) G=18.927(0.004) BP=19.026(0.03) RP=18.864(0.038) 062211.1 -323633 (2000.0) Gaia_DR3_2893005857946801152 WD (score=0.38) 062211.1 -323633 (2000.0) PS1_DR1_68860955463078947 g=-(-) r=-(-) i=19.2525(0.0155) z=-(-) y=-(-) ASAS-SN Sky Patrol: https://asas-sn.osu.edu/sky-patrol/coordinate/64063544-09e4-46aa-90eb-692e4… ASASSN-23dr 20230506.002 19.397o ATF ASASSN-23dr 20230507.031 <15.873g ASN ASASSN-23dr 20230507.033 <15.723g ASN ASASSN-23dr 20230507.034 <15.740g ASN ASASSN-23dr 20230507.710 14.559o ATF ASASSN-23dr 20230507.716 14.492o ATF ASASSN-23dr 20230507.718 14.434o ATF ASASSN-23dr 20230507.720 14.417o ATF ASASSN-23dr 20230507.730 14.305o ATF ASASSN-23dr 20230507.732 14.284o ATF ASASSN-23dr 20230507.736 14.216o ATF ASASSN-23dr 20230508.030 11.480g ASN ASASSN-23dr 20230508.032 11.448g ASN ASASSN-23dr 20230508.033 11.460g ASN ASASSN-23dr 20230509.020 10.486g ASN ASASSN-23dr 20230509.021 10.492g ASN ASASSN-23dr 20230509.022 10.482g ASN

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[vsnet-alert 27724] V611 Her superoutburst
by Taichi Kato 09 May '23

09 May '23

V611 Her superoutburst Known SU UMa star, but more observations are desired. YYYYMMDD(UT) mag observer 20230426.6536 <165c (Yutaka Maeda) 20230426.7723 <175C (Masayuki Moriyama) 20230426.9968 <17.703g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230427.6859 <140c (Yutaka Maeda) 20230428.3969 <17.659g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.3969 <17.557g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.9795 <180cG (Masao Funada) 20230429.2331 <17.739g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.2331 <18.047g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.4549 19.353zg (ZTF Alert DC mag (Masci+ 2019)) 20230429.4650 18.928zr (ZTF Alert DC mag (Masci+ 2019)) 20230430.3319 <17.802g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.3319 <18.040g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.6623 <153c (Yutaka Maeda) 20230430.7451 <167C (Masayuki Moriyama) 20230501.3880 16.442g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230501.3880 16.941g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230501.6734 <158c (Yutaka Maeda) 20230502.6060 <152c (Yutaka Maeda) 20230505.2172 15.061g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.2172 15.212g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230506.065 14.96C (Gary Poyner) 20230506.0665 14.89cG (Masao Funada) 20230507.1589 15.119g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.1589 15.194g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230507.1589 15.307g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27719] AR UMa short-term variations
by Taichi Kato 06 May '23

06 May '23

AR UMa short-term variations Josch Hambsch reported time-resolved observations. In addition to the expected orbital modulation (0.7 mag), QPO-like variations were also recorded, which are often observed in polars.

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[vsnet-alert 27721] Gaia23bqv: possible SU UMa-type outburst
by Taichi Kato 06 May '23

06 May '23

Gaia23bqv: possible SU UMa-type outburst (but probably already faint) http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bqv/ YYYYMMDD(UT) mag observer 20230414.9836 16.712o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.0058 16.605o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.0098 16.622o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.0131 16.606o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230418.0653 17.338o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230418.0708 17.424o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230418.0748 17.367o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230418.1104 17.410o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.2294 17.738c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.2326 17.835c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.2677 17.654c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.3019 17.553c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3586 18.326c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3631 18.398c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3691 18.477c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3909 18.575c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27720] Gaia23brc brightening and fading
by Taichi Kato 06 May '23

06 May '23

Gaia23brc brightening and fading http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23brc/ Fading seems to be not symmetric (expected for microlensing)m YYYYMMDD(UT) mag observer 20230402.1034 17.485o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230402.1052 17.306o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230402.1080 17.340o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230402.1136 17.855o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230403.2936 17.376o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230403.3059 17.314o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230403.3081 17.554o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230403.3123 17.675o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230405.0541 16.574o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230405.0560 16.304o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230405.0592 16.792o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230405.0799 16.272o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.2869 15.883o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.2888 15.859o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.2917 15.858o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.3021 15.625o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.0560 14.944o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.0579 15.280o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.0612 15.061o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.0664 15.084o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.3067 13.837o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.3085 13.855o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.3113 13.862o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.3221 13.809o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.2880 16.394o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.2912 16.525o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.2941 16.597o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.3298 16.462o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.4234 17.217o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.0505 17.678o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27718] Please check ASASSN-18ace
by Taichi Kato 04 May '23

04 May '23

Please check ASASSN-18ace ASAS-SN ver.2 reported g=14.4 on May 3. There was a superoutburst at g=14.6 on 2018 Dec. 24. No detection since then.

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[vsnet-alert 27717] ASASSN-15jk likely superoutburst
by Taichi Kato 04 May '23

04 May '23

ASASSN-15jk likely superoutburst Type from ATLAS. YYYYMMDD(UT) mag observer 20230428.3344 <18.150g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230428.8166 <17.917g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230429.2133 <18.080g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230501.0887 16.254g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.1839 16.376g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230503.7876 16.602g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

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[vsnet-alert 27716] MASTER OT J203421.90+120656.9: yet another object with dip currently in likely superoutburst
by Taichi Kato 04 May '23

04 May '23

MASTER OT J203421.90+120656.9: yet another object with dip currently in likely superoutburst Behavior very similar to MASTER OT J055845.55+391533.4 and MASTER OT J172758.09+380021.5. Supercycle 65 d in 2022. See https://ui.adsabs.harvard.edu/abs/2023arXiv230407695K YYYYMMDD(UT) mag observer 20230420.3883 18.352c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230420.3902 18.293c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230420.4054 18.349c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230420.4222 18.376c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230421.4522 17.230zg (ZTF Alert DC mag (Masci+ 2019)) 20230421.4679 17.523zr (ZTF Alert DC mag (Masci+ 2019)) 20230423.4438 17.830zr (ZTF Alert DC mag (Masci+ 2019)) 20230423.4752 17.561zg (ZTF Alert DC mag (Masci+ 2019)) 20230426.4269 18.398zg (ZTF Alert DC mag (Masci+ 2019)) 20230426.4706 18.765zr (ZTF Alert DC mag (Masci+ 2019)) 20230429.3813 18.389c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.3845 18.728c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.3906 18.475c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.3988 18.714c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.4257 18.596c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1380 18.780o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1485 18.950o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.4231 18.241zr (ZTF Alert DC mag (Masci+ 2019)) 20230501.4630 17.983zg (ZTF Alert DC mag (Masci+ 2019)) 20230502.3294 18.749o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.3326 19.164o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.3381 18.897o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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[vsnet-alert 27715] ASASSN-18ed outburst
by Taichi Kato 04 May '23

04 May '23

ASASSN-18ed outburst Subtype unknown. Long outburst. YYYYMMDD(UT) mag observer 20230417.9393 18.043o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9427 17.956o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9500 18.312o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9836 18.251o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1710 19.054c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1822 19.091c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.2107 19.003c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.2150 19.351c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3181 16.127c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3213 16.232c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3329 16.120c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3382 16.032c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9229 15.567o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9267 15.572o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9327 15.599o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9450 15.882o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.9230 15.704o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.9273 15.737o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.9330 15.769o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.9432 15.875o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.9091 16.245o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.9123 16.198o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.9178 16.266o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.9513 16.091o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2363 16.178o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2392 16.111o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2564 16.070o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2736 16.204o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.8921 16.314o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.8945 16.314o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.8949 16.329o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.8976 16.345o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.9006 16.366o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.9107 16.410o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.9117 16.394o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.9238 16.421o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.8956 16.558o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.8984 16.555o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9039 16.367o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9086 16.374o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9122 16.365o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9141 16.389o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.9192 16.578o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

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