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

[vsnet-alert 26386] Gaia16bvm likely superoutburst
by Taichi Kato 04 Nov '21

04 Nov '21

Gaia16bvm likely superoutburst Type from ZTF data. YYYYMMDD(UT) mag observer 20211103.1149 16.919zg (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26385] Fw: [vsnet-adm 210582] planetary hypothesis for O-C variations of CVs and PCEBs
by Daisaku NOGAMI 03 Nov '21

03 Nov '21

Dear colleagues, I would forward a request e-mail from Prof. Klaus Beuermann. Best regards, Daisaku Nogami --- Daisaku NOGAMI <nogami(a)kusastro.kyoto-u.ac.jp> Begin forwarded message: Date: Tue, 2 Nov 2021 08:58:45 +0100 From: Klaus Beuermann <k.beuermann(a)t-online.de> To: vsnet-ecl-owner(a)ooruri.kusastro.kyoto-u.ac.jp Subject: [vsnet-adm 210582] planetary hypothesis for O-C variations of CVs and PCEBs Dear colleagues, I am working on the cause of the substantial O-C variations in cataclysmic variables and post-common-envelope binaries. I am sure, you have observations of at least some of the objects, we are following up and I wounder, how I can access such data of yours, which requires to search for an object by name or coordinates. Currently I am interested in HU Aqr, NN Ser, HW Vir, QS Vir, V470 Cam=HS0705+66, CSS080502, CSS06653, CSS041631 WD1333, . . . Would your group be able to provide eclipse data (raw light curves or mid eclipse times) on such objects? Thanks in advance______ Klaus Beuermann Institute for Astrophysics (formerly Goettingen Observatory), Goettingen, Germany

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[vsnet-alert 26384] Gaia21efs further brightening
by Taichi Kato 03 Nov '21

03 Nov '21

Gaia21efs further brightening Tonny Vanmunster has reported further observations. The object further brightened to 12.6-12.7 mag on Oct. 31. There were short-period modulations and even a period of 0.054 d is suspected. More data are definitely needed to clarify the nature of this object.

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[vsnet-alert 26383] ASASSN-19wh possible superoutburst
by Taichi Kato 03 Nov '21

03 Nov '21

ASASSN-19wh possible superoutburst Type from ZTF data. Superoutburst + rebrightening in 2020 Nov.-Dec. YYYYMMDD(UT) mag observer 20211030.1531 16.496zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211102.2083 16.903zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26382] ASASSN-19acl outburst
by Taichi Kato 03 Nov '21

03 Nov '21

ASASSN-19acl outburst First outburst since 2019 Nov. SS Cyg star as inferred from the slow rise in 2019? YYYYMMDD(UT) mag observer 20211102.2489 15.119zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26381] ASASSN-17jb bright outburst
by Taichi Kato 03 Nov '21

03 Nov '21

ASASSN-17jb bright outburst Brightest outburst recored by ZTF. YYYYMMDD(UT) mag observer 20211030.1299 16.458zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20211102.1938 16.628zr (Zwicky Transient Facility Lasair (Masci+ 2019))

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[vsnet-alert 26380] ASASSN-21ui: new WZ Sge-type dwarf nova
by Taichi Kato 03 Nov '21

03 Nov '21

ASASSN-21ui: new WZ Sge-type dwarf nova Kyoto U. team and Tamas Tordai have reported observations. The object shows 0.10-mag double-wave early superhumps with a period of 0.0562(2) d.

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[vsnet-alert 26379] ASASSN-21ui
by Taichi Kato 02 Nov '21

02 Nov '21

ASASSN-21ui Fresh, large-amplitude outburst. ASASSN-21ui --- ------- 1:39:26.68 52:5:40 2021-11-1.3 14.45 SDSS DSS VIZIER ------- CV candidate, matches to SDSS g=22.5, g>18.4 on 2021-10-31.50, g=15.3 on 2021-11-01.15, g=14.7 on 2021-11-01.31. ASASSN-21ui 20211031.50 <184g ASN ASASSN-21ui 20211101.15 153g ASN ASASSN-21ui 20211101.31 147g ASN

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[vsnet-alert 26378] KY Eri superoutburst
by Taichi Kato 02 Nov '21

02 Nov '21

KY Eri superoutburst YYYYMMDD(UT) mag observer 20211023.6359 <156c (Yutaka Maeda) 20211025.6207 147c (Yutaka Maeda) 20211026.6189 152:c (Yutaka Maeda) 20211026.728 153 (Rod Stubbings) 20211026.9100 15.48C (Masao Funada) 20211027.6343 148:cG (Yutaka Maeda) 20211028.6214 153:c (Yutaka Maeda) 20211029.517 153 (Rod Stubbings) 20211029.6289 148c (Yutaka Maeda) 20211030.498 153 (Rod Stubbings) 20211031.515 153 (Rod Stubbings)

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[vsnet-alert 26377] AX Cap superoutburst
by Taichi Kato 02 Nov '21

02 Nov '21

AX Cap superoutburst YYYYMMDD(UT) mag observer 20211017.5471 <159C (Masayuki Moriyama) 20211026.5496 163:C (Masayuki Moriyama) 20211029.467 158 (Rod Stubbings) 20211030.469 158 (Rod Stubbings) 20211031.492 160 (Rod Stubbings)

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