October 2021 - vsnet-chat - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-chat 8847] VSOLJ bulletin No.81
by meineko 21 Nov '21

21 Nov '21

Following VSOLJ bulletin are now available at http://vsolj.cetus-net.org/bulletin.html No.81 2021 Sep. Orbital and spin periods of the candidate white dwarf pulsar ASASSN-V J205543.90+240033.5 Taichi Kato, Franz-Josef Hambsch, Elena P. Pavlenko, Aleksei A. Sosnovskij Seiichiro Kiyota, VSOLJ

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[vsnet-chat 8976] Re: ATO J061.1478-31.0634 = Gaia19fes: orbital period
by Taichi Kato 30 Oct '21

30 Oct '21

> Couldn't this be an SU UMa-type dwarf nova with a long orbital period? No evidence for a superoutburst has yet been detected.

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[vsnet-chat 8975] Re: [vsnet-alert 23881] Re: ATO J061.1478-31.0634 = Gaia19fes: orbital period
by Patrick Schmeer 29 Oct '21

29 Oct '21

ATO J061.1478-31.0634 (UG) https://www.aavso.org/vsx/index.php?view=detail.top&oid=1499859 Couldn't this be an SU UMa-type dwarf nova with a long orbital period? And couldn't the long outburst in 2019 November have been a long normal one? (like those observed in e.g. V1006 Cyg and TU Men) Regards, Patrick ------- Am Mittwoch, 22. Januar 2020, 00:10:52 MEZ hat Taichi Kato <tkato(a)kusastro.kyoto-u.ac.jp> Folgendes geschrieben: > Should we take 0.122641(4) d as the orbital period? > And has the UGSU classification been confirmed? This one is SS Cyg star and the above period refers to the orbital one. No evidence of superhumps during the outburst. The object is already in quiescence and no further observations are particularly needed (unless it undergoes another outburst).

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[vsnet-chat 8974] TW Tri: IW And-like features
by Taichi Kato 29 Oct '21

29 Oct '21

TW Tri: IW And-like features Standstill ended with brightening twice: 2018 July and 2019 Dec.

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[vsnet-chat 8973] LT Eri: Z Cam (IW And?) + E
by Taichi Kato 22 Oct '21

22 Oct '21

LT Eri: Z Cam (IW And?) + E From ZTF+ASAS-SN data. Standstill in 2018 and the behavior looks like an IW And star (heartbeat).

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[vsnet-chat 8972] Thorstensen et al. (2020) polars
by Taichi Kato 21 Oct '21

21 Oct '21

Thorstensen et al. (2020) polars VSX apparently overlooked this reference: https://ui.adsabs.harvard.edu/abs/2020AJ....160...70T/abstract

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[vsnet-chat 8970] Re: PT Per: orbital period
by Taichi Kato 20 Oct '21

20 Oct '21

Re: PT Per: orbital period > From ZTF data. Porb=0.0562733(1) d. > Double humps per orbital cycle. This object is not eclipsing as in VSX.

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[vsnet-chat 8969] PT Per: orbital period
by Taichi Kato 20 Oct '21

20 Oct '21

PT Per: orbital period From ZTF data. Porb=0.0562733(1) d. Double humps per orbital cycle. The period does not support a period bouncer suggested by Watson et al. (2015).

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[vsnet-chat 8966] Re: vsnet archives
by Taichi Kato 20 Oct '21

20 Oct '21

Dear Sebastian, There are several ways (functions provided by Maehara-san): (1) Message lists similar to old ones: http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/msglist http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-chat/msglist etc. (2) Old type format URL: like http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-chat/8965 (3) Old messages as before http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-chat/8500 > but until some > days ago I noticed that the old archives up to August 2021 were > still online, but now they aren't anymore. Something may have been changed. Meahara-san, could you check what happened some days ago?

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[vsnet-chat 8967] Re: vsnet archives
by Taichi Kato 19 Oct '21

19 Oct '21

This type of listing also works: http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-chat/2021-July/date.…

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vsnet-chat October 2021