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

[vsnet-chat 9009] VSOLJ Variable Star Bulletin
by meineko 11 Mar '22

11 Mar '22

New No.95 is available at http://vsolj.cetus-net.org/bulletin.html No.95 V476 Cyg (Nova Cyg 1920) is currently a dwarf nova — first such an object in the period gap? Taichi Kato -------------- Seiichro Kiyota VSOLJ

1 0

[vsnet-chat 9007] VSOLJ Variable Star Bulletin
by meineko 10 Mar '22

10 Mar '22

New issues of VSOLJ Variable Star Bulletin are now available at http://vsolj.cetus-net.org/bulletin.html No.93 On the identity of Tsesevich’s “YY Dra” Taichi Kato and Elena P. Pavlenko No.94 Long-lasting standstill and fading episode in the IW And star V507 Cyg Taichi Kato andMasayuki Moriyama Seiichiro Kiyota VSOLJ

1 1

[vsnet-chat 9006] ZTF J192517.70-051955.7: polar
by Taichi Kato 09 Mar '22

09 Mar '22

ZTF J192517.70-051955.7: polar https://www.aavso.org/vsx/index.php?view=detail.top&oid=1890324 It was already pointed out in http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-chat/8907 You seem to have forgotten to include polars reported in past vsnet-chat.

1 0

[vsnet-chat 9005] ZTF18aapobha: polar
by Taichi Kato 06 Mar '22

06 Mar '22

ZTF18aapobha: polar P = 0.0752759(5) d from ZTF data. Single-pole acceretor. High Lx/Lopt (1RXS J184415.0+445407).

1 0

[vsnet-chat 9004] NSV 14669: likely constant
by Taichi Kato 03 Mar '22

03 Mar '22

NSV 14669: likely constant ASAS-SN data: https://asas-sn.osu.edu/sky-patrol/coordinate/30a2450b-ade9-48d2-99e3-161ec… Also too faint (M_V) for a LPV.

1 0

[vsnet-chat 9003] VSOLJ bulletin no.092
by meineko 23 Feb '22

23 Feb '22

Dear Observers, A new issue of VSOLJ Variable Star Bulletin is now available at http://vsolj.cetus-net.org/bulletin.html No.92 2022 Feb. Analysis of the IW And star ASAS J071404+7004.3 Taichi Kato, Kiyoshi Kasai, Elena P. Pavlenko, Nikolaj V. Pit, Aleksei A. Sosnovskij,Hiroshi Itoh, Hidehiko Akazawa, Stephen M. Brincat, Leonid E. Keir, Sergei N. Udovichenko,Yusuke Tampo, Naoto Kojiguchi, Masaaki Shibata, Yasuyuki Wakamatsu, Tamás Tordai,Tonny Vanmunster and Charles Galdies Seiihiro Kiyota VSOLJ

1 0

[vsnet-chat 8999] VSOLJ Bulletin No.90
by meineko 14 Feb '22

14 Feb '22

Dear all, A new issue of VSOLJ bulletin is available at http://vsolj.cetus-net.org/bulletin.html No.90 Emerging ordinary superhumps as the standard candle for WZ Sge stars Taichi Kato Seiichiro Kiyota VSOLJ

1 1

[vsnet-chat 9001] Is AH Her an IW And star?
by Taichi Kato 09 Feb '22

09 Feb '22

Is AH Her an IW And star? > https://ui.adsabs.harvard.edu/abs/2017RAA....17...56H/abstract Looking at the data more closely, this standstill of AH Her a shallow dip before the termination (around JD 2457165), which is different from the typical behavior of IW And stars.

1 0

[vsnet-chat 9000] AY Psc: eclipsing IW And star
by Taichi Kato 08 Feb '22

08 Feb '22

AY Psc: eclipsing IW And star See fig. 8 in https://ui.adsabs.harvard.edu/abs/2017RAA....17...56H/abstract Also more events in the AAVSO data.

1 0

[vsnet-chat 8998] MASTER OT J064855.37-055545.7 = ASASSN-21fj
by Taichi Kato 20 Jan '22

20 Jan '22

MASTER OT J064855.37-055545.7 = ASASSN-21fj https://gcn.gsfc.nasa.gov/gcn/gcn3/26470.gcn3

1 0