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

[vsnet-newvar 10088] 1RXSJ075330.1+044606: very active
by Taichi Kato 15 May '23

15 May '23

1RXSJ075330.1+044606: very active Very active transition between high and low states (VY Scl) since 2022 Sep. Currently in low state. YYYYMMDD(UT) mag observer 20230406.8840 16.375o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.8875 16.366o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.8928 16.591o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230406.9074 16.475o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.0940 16.199o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.1118 16.512o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.1220 16.336o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230408.1298 16.536o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.2909 14.864zg (ZTF Alert DC mag (Masci+ 2019)) 20230409.5473 167C (Masayuki Moriyama) 20230409.7961 16.555o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.7990 16.560o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.8053 16.359o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230409.8161 16.352o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230410.3228 16.356g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230411.0440 16.464c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.0472 16.553c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.0532 16.432c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.0568 16.431c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.0697 16.493c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.1112 16.374g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230411.1572 16.389zg (ZTF Alert DC mag (Masci+ 2019)) 20230411.2374 16.241zr (ZTF Alert DC mag (Masci+ 2019)) 20230412.5505 165C (Masayuki Moriyama) 20230414.0415 16.666c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.0447 16.485c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.0516 16.421c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.0630 16.533c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.1925 17.210zr (ZTF Alert DC mag (Masci+ 2019)) 20230415.2895 17.401g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230415.7919 17.511o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.7947 17.433o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.8016 17.445o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230415.8194 17.488o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.0263 17.963c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.0295 17.995c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.0390 18.477c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.0542 18.093c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.1720 17.631zr (ZTF Alert DC mag (Masci+ 2019)) 20230417.1937 17.155zg (ZTF Alert DC mag (Masci+ 2019)) 20230419.2117 17.571zr (ZTF Alert DC mag (Masci+ 2019)) 20230420.0376 18.155c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230420.0407 18.390c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230420.0462 18.202c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230420.0562 18.382c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230421.1761 18.378zg (ZTF Alert DC mag (Masci+ 2019)) 20230423.0030 18.721c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230423.0062 18.750c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230423.0161 18.863c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230423.0216 18.530c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230423.1829 18.654zr (ZTF Alert DC mag (Masci+ 2019)) 20230423.2018 17.240zg (ZTF Alert DC mag (Masci+ 2019)) 20230424.0321 <17.290g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230424.7202 18.905o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230424.7398 19.111o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.0558 <17.356g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230426.5593 <161C (Masayuki Moriyama) 20230430.7197 18.008o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230430.7230 18.328o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1750 17.378zg (ZTF Alert DC mag (Masci+ 2019)) 20230502.0310 18.391o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230502.0342 18.192o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230503.0145 <16.947g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.0520 <16.762g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230504.9889 <16.904g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230505.0275 18.028o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.9636 18.504o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.9774 18.834o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230507.9900 18.529o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.7247 18.648o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.7278 18.396o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.7420 18.180o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230509.7495 18.639o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230510.7612 <17.304g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230511.4895 <161C (Masayuki Moriyama) 20230512.0230 <17.417g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230513.0160 <17.322g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

1 0

[vsnet-newvar 10087] PS1-3PIJ185013.38+242220.2 = DDE 163: unusual object (double outburst)
by Taichi Kato 15 May '23

15 May '23

PS1-3PIJ185013.38+242220.2 = DDE 163: unusual object (double outburst) Using ATLAS data, I noticed that the bright outburst in 2022 Mar.-Apr. was a double outburst peaking at 13.8 on Mar. 28, fading to mag 17 and 3-d outburst again. The overall feature is inconsistent with the suggested SU UMa-type classification. It resemble that of an AM CVn star but without clear rebrightenings (there was some hint of a fading tail). Other outburst were also unusual. The 2021 Feb. one had two peaks (ZTF+ATLAS) and there were other faint complex-shaped outbursts. There were past ZTF time-series data in quiescence without a particular period.

1 0

[vsnet-newvar 10086] ASASSN-17fo possible superoutburst
by Taichi Kato 15 May '23

15 May '23

ASASSN-17fo possible superoutburst (UGSU+E) YYYYMMDD(UT) mag observer 20230510.3665 <17.776g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.5396 <142c (Yutaka Maeda) 20230511.5475 <159c (Yutaka Maeda) 20230511.6453 <172C (Masayuki Moriyama) 20230513.5734 16.76C (Masayuki Moriyama) 20230514.3727 16.909g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))

1 0

[vsnet-newvar 10085] ASASSN-14cf likely superoutburst
by Taichi Kato 15 May '23

15 May '23

ASASSN-14cf likely superoutburst Past ASAS-SN data suggests a supercycle of 250 d, but superoutbursts not always occurred at expected epochs. The current one looks like a super. YYYYMMDD(UT) mag observer 20230508.3274 <17.495g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230509.3043 <17.165g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230510.3375 <17.188g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230513.3741 15.161o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230513.3768 15.198o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230513.3972 15.179o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.635 149 (Rod Stubbings)

1 0

[vsnet-newvar 10084] 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))

1 0

[vsnet-newvar 10083] 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.

1 0

[vsnet-newvar 10082] ASASSN-14hq outburst
by Taichi Kato 14 May '23

14 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)

1 0

[vsnet-newvar 10081] 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))

1 0

[vsnet-newvar 10080] 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)

1 0

[vsnet-newvar 10079] 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)

1 0

2025

2024

2023

2022

2021

vsnet-newvar May 2023