- vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 16193] V592 Her superoutburst! (since Dec. 24 or earlier)
by Patrick Schmeer 07 Jan '22

07 Jan '22

V592 Herculis (UGWZ) https://www.aavso.org/vsx/index.php?view=detail.top&oid=15403 The current superoutburst started on 2021 December 24 or earlier according to recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) data: https://asas-sn.osu.edu/sky-patrol/coordinate/b56e5c05-0898-48a8-aa17-217f7… In recent decades superoutbursts of V592 Her occurred every 12 years (previous ones in 1986, 1998 and 2010). Clear skies, Patrick ------- Eddy Muyllaert <muyllaert.eddy(a)telenet.be> wrote on 7 January 2022 at 00:03:55 UTC: HERV592 20220106.2444 15.94C OUTBURST! Open University COAST Regards, Eddy

1 0

[vsnet-campaign-dn 16192] GP CVn superoutburst
by Taichi Kato 07 Jan '22

07 Jan '22

GP CVn superoutburst UGSU+E. Last superoutburst in 2021 Feb.-Mar. YYYYMMDD(UT) mag observer 20211213.7983 <153c (Yutaka Maeda) 20211214.7957 <154c (Yutaka Maeda) 20211221.8288 <148c (Yutaka Maeda) 20211222.8169 <156c (Yutaka Maeda) 20211223.8388 <159c (Yutaka Maeda) 20220103.7934 154:c (Yutaka Maeda) 20220106.226 16.04C (Gary Poyner)

1 0

[vsnet-campaign-dn 16191] V592 Her rare outburst
by Taichi Kato 07 Jan '22

07 Jan '22

V592 Her rare outburst WZ Sge star. Last superoutburst in 2010. YYYYMMDD(UT) mag observer 20211031.4099 <166C (Masayuki Moriyama) 20211031.7653 <139 (Eddy Muyllaert) 20211101.4343 <164C (Masayuki Moriyama) 20211101.7618 <139 (Eddy Muyllaert) 20211101.7743 <142 (Jose Ripero) 20211102.7646 <139 (Eddy Muyllaert) 20211103.4232 <170C (Masayuki Moriyama) 20211105.7590 <139 (Eddy Muyllaert) 20211107.4103 <160C (Masayuki Moriyama) 20211108.7708 <142 (Jose Ripero) 20211115.4106 <156C (Masayuki Moriyama) 20211118.4076 <156C (Masayuki Moriyama) 20211222.8923 <133c (Yutaka Maeda) 20220103.8978 <138c (Yutaka Maeda) 20220106.2444 15.94C (Eddy Muyllaert)

1 0

[vsnet-campaign-dn 16190] MASTER OT J042609.34+354144.8 superhumps
by Taichi Kato 06 Jan '22

06 Jan '22

MASTER OT J042609.34+354144.8 superhumps Kiyota-san detected large-amplitude superhumps on Jan. 4. Superhumps were apparently growing on Jan. 3.

1 0

[vsnet-campaign-dn 16189] TV Crv superhumps
by Taichi Kato 05 Jan '22

05 Jan '22

TV Crv superhumps Itoh-san detected superhumps.

1 0

[vsnet-campaign-dn 16188] ASASSN-19za possible superoutburst
by Taichi Kato 04 Jan '22

04 Jan '22

ASASSN-19za possible superoutburst Gaia22aau AT2019slj 2022-01-01 15:22:10 350.07709 49.32948 15.14 18.99 0.72 CV 2022-01-03 14:16:29 ~5 mag outburst in confirmed CV ASASSN-19za, spectrum on TNS http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia22aau/ Observations on two nights during the 2019 superoutbursts.

1 0

[vsnet-campaign-dn 16187] MASTER OT J030227.28+191754.5: stage A superhumps, eventually
by Taichi Kato 03 Jan '22

03 Jan '22

MASTER OT J030227.28+191754.5: stage A superhumps, eventually The most recent data by Tonny Vanmunster, Tamas Tordai and Itoh-san have recorded emerging ordinary superhumps since 2021 Dec. 30 -- 32 d after the outburst detection! (The longest record, probably related to the large outburst amplitude). The period of stage A superhumps is 0.0616(2) d (2-d baseline). The period of early superhumps is 0.059851(5) d. The corresponding mass ratio is 0.076(10), which will be updated as more observations become available. This value corresponds to a "borderline" period bouncer. List of observers and numbers of measurements: Code Mode Corr SD Obs OKU B -0.401 0.051 1503 KU1 CV -0.427 0.044 19437 Van CV -0.503 0.022 512 KU1 V -0.281 0.038 8153 Ioh C -0.283 0.050 20707 Trt V -0.291 0.030 358 HaC CV -0.242 0.067 262 KU1 Ic 0.012 0.033 109 KU1 Rc -0.051 0.026 119 KU1 B -0.424 0.024 118 Kis C -0.380 0.060 1812 Vih V -0.282 0.032 242 Vih Ic -0.001 0.030 245 Trt CV -0.207 0.031 1440 RFD V -0.173 0.014 175 OKU C 12.103 0.059 1539 GCH CV -0.457 0.018 7

1 0

[vsnet-campaign-dn 16186] TV Crv superoutburst (since Dec. 29)
by Patrick Schmeer 02 Jan '22

02 Jan '22

TV Corvi (UGSU) https://www.aavso.org/vsx/index.php?view=detail.top&oid=10699 From "activity at a glance (Jan 02)" (Taichi Kato, vsnet-outburst 28168): 20211229.671 132 (Rod Stubbings) 20211230.1675 13.37C (Masao Funada) 20211230.669 134 (Rod Stubbings) 20211231.3199 13.52C (Masao Funada) The current superoutburst started between 2021 December 24 and 29 according to recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) data: https://asas-sn.osu.edu/sky-patrol/coordinate/80b95890-7fe5-4e17-80aa-85d9b… Normal outbursts were observed from 2021 February 16 to 18 and from July 5 to 7. Time-resolved photometry is encouraged. Clear skies, Patrick

1 0

[vsnet-campaign-dn 16185] EF Peg likely superoutburst (since Dec. 30)
by Patrick Schmeer 02 Jan '22

02 Jan '22

EG Pegasi (UGSU) https://www.aavso.org/vsx/index.php?view=detail.top&oid=25272 From "activity at a glance (Jan 02)" (Taichi Kato, vsnet-outburst 28168): 20211220.412 <130 (Tsuneo Horie) 20211221.415 <130 (Tsuneo Horie) 20211222.4465 <158c (Yutaka Maeda) 20211223.4439 <151c (Yutaka Maeda) 20211226.410 <130 (Tsuneo Horie) 20211227.417 <130 (Tsuneo Horie) 20211228.372 <130 (Tsuneo Horie) 20211230.410 116 (Tsuneo Horie) 20211231.406 112 (Tsuneo Horie) 20211231.4368 113cG (Yutaka Maeda) 20220101.4006 11.40C (Masayuki Moriyama) Recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) light curve and data (contaminated): https://asas-sn.osu.edu/sky-patrol/coordinate/7d4a7099-69dc-44f3-b85d-0f4e9… Time-resolved photometry is encouraged (note: 12.6 mag. companion 5" to the SE). Clear skies, Patrick

1 0

[vsnet-campaign-dn 16184] CRTS J045446.8-181214 (super?)outburst (since Dec. 29)
by Patrick Schmeer 02 Jan '22

02 Jan '22

CRTS J045446.8-181214 (UG) https://www.aavso.org/vsx/index.php?view=detail.top&oid=298372 Grzegorz Duszanowicz reports that SSS 130317:045447-181214 is bright (mag. 14.6). According to ASAS-SN Sky Patrol data the outburst started on 2021 December 28 or 29: https://asas-sn.osu.edu/sky-patrol/coordinate/a51092ff-2b3c-45d0-8d88-09d64… ZTF light curve, data, and images (via Lasair): https://lasair.roe.ac.uk/object/ZTF18achtaah/ Time-resolved photometry is encouraged. Clear skies, Patrick ------- References: All-Sky Automated Survey for Supernovae (ASAS-SN) Sky Patrol: - Shappee et al., 2014ApJ...788...48S - Kochanek et al., 2017PASP..129j4502K Lasair: - Smith et al., 2019RNAAS...3...26S Zwicky Transient Facility (ZTF): - Masci et al., 2019PASP..131a8003M

1 0

2025

2024

2023

2022

2021

vsnet-campaign-dn