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

[vsnet-alert 27704] PTF1J071912.13+485834.0 superoutburst (AM CVn)
by Taichi Kato 03 May '23

03 May '23

PTF1J071912.13+485834.0 superoutburst (AM CVn) YYYYMMDD(UT) mag observer 20230430.4981 <158c (Yutaka Maeda) 20230501.1840 16.320zg (ZTF Alert DC mag (Masci+ 2019)) 20230501.2044 16.535zr (ZTF Alert DC mag (Masci+ 2019)) 20230501.5083 <155c (Yutaka Maeda) 20230501.5391 166:C (Masayuki Moriyama)

1 0

[vsnet-alert 27703] Gaia23bql: WZ Sge star 1 month past the peak?
by Taichi Kato 03 May '23

03 May '23

Gaia23bql: WZ Sge star 1 month past the peak? http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bql/ Gaia23bql AT2023hng 2023-04-25 12:41:42 175.88031 -70.17583 17.32 unknown 2023-05-02 08:40:30 Apparently hostless transient There may have been a dip on Apr. 29 in ATLAS data. YYYYMMDD(UT) mag observer 20230407.1642 15.923o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230407.1673 16.047o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230407.1728 16.001o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230407.1848 15.872o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.9198 16.387o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.9226 16.307o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.9283 16.386o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230411.9384 16.432o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230413.0391 16.818c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230413.0419 16.671c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230413.0481 16.643c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230413.0602 16.691c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.9051 17.291o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.9079 16.913o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.9137 16.655o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230414.9238 16.744o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9100 16.940o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9130 16.965o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9183 16.861o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230417.9286 16.873o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1451 17.104c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1484 17.038c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1544 17.082c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230419.1663 17.055c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.2693 17.287c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.2721 17.318c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.2987 17.446c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230425.3043 17.566c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.8858 17.385o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.8888 17.436o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.8986 17.453o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230426.9051 17.633o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8782 18.112o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8843 18.673o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8942 18.325o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1772 17.992o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2005 17.998o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.2166 18.100o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

1 0

[vsnet-alert 27702] ASASSN-23dk ATLAS detection
by Taichi Kato 03 May '23

03 May '23

ASASSN-23dk ATLAS detection The fading rate may suggest a WZ Sge star. YYYYMMDD(UT) mag observer 20230428.7825 15.219o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.8055 15.202o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230428.8250 15.142o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.7545 15.576o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.7582 15.596o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.7657 15.595o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

1 0

[vsnet-alert 27701] ASASSN-23dl ATLAS detection
by Taichi Kato 03 May '23

03 May '23

ASASSN-23dl ATLAS detection YYYYMMDD(UT) mag observer 20230429.8682 16.520o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8716 16.525o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8778 16.527o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.8876 16.565o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1758 16.688o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1801 16.731o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1857 16.673o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230501.1959 16.771o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

1 0

[vsnet-alert 27700] TCP J16064415-1611467: new WZ Sge-type dwarf nova
by Taichi Kato 03 May '23

03 May '23

TCP J16064415-1611467: new WZ Sge-type dwarf nova The most recent data by Itoh-san on May 2 (longer run than in the past) seem to show apparent early superhumps. Only the initial data (vsnet-alert 27686) appears to be anomalous. The combined data with Hambsch's (but not ver helpful) has yielded a period of 0.05633(5) d, characteristic double peaks and a full amplitude of 0.07 mag.

1 0

[vsnet-alert 27699] ASASSN-22ak: sign of superhump?
by Taichi Kato 03 May '23

03 May '23

ASASSN-22ak: sign of superhump? Josch Hambsch has reported observations. 0.3-mag variations were recorded. The suspected superhump period appears to be longer than the one suspected in 2022 Nov (and longer than that of an AM CVn star). Please continue observations of this very unusual object.

1 0

[vsnet-alert 27698] Re: MASTER OT J150518.03-143933.6 superoutburst?
by Taichi Kato 02 May '23

02 May '23

Re: MASTER OT J150518.03-143933.6 superoutburst? Rapidly faded? YYYYMMDD(UT) mag observer 20230429.1692 15.863o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.1710 15.904o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.1743 15.917o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230429.1949 15.914o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230430.6422 147:c (Yutaka Maeda) 20230430.6422 147:c (Yutaka Maeda) 20230430.9364 17.223o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230430.9382 17.389o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230430.9567 17.270o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))

1 0

[vsnet-alert 27697] MASTER OT J150518.03-143933.6 superoutburst?
by Taichi Kato 02 May '23

02 May '23

MASTER OT J150518.03-143933.6 superoutburst? Known SU UMa star. YYYYMMDD(UT) mag observer 20230426.6334 <147c (Yutaka Maeda) 20230427.6660 <150c (Yutaka Maeda) 20230430.6422 147:c (Yutaka Maeda) 20230430.6422 147:c (Yutaka Maeda)

1 0

[vsnet-alert 27696] SDSS J110014.72+131552.1 likely superoutburst
by Taichi Kato 02 May '23

02 May '23

SDSS J110014.72+131552.1 likely superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230425.2193 <18.042g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230426.6032 <156c (Yutaka Maeda) 20230426.605 <175C (Mitsutaka Hiraga) 20230427.6318 <141c (Yutaka Maeda) 20230428.9055 14.252g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230430.6119 130:c (Yutaka Maeda)

1 0

2024

2023

2022

2021

vsnet-alert May 2023