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

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

21 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 19 Oct '21

19 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 8965] vsnet archives
by Sebastián Otero 19 Oct '21

19 Oct '21

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[vsnet-chat 8964] V410 Sct: Mira
by Taichi Kato 14 Oct '21

14 Oct '21

V410 Sct: Mira https://arxiv.org/pdf/2110.07229.pdf ZTF data clearly show Mira-type variation with an amplitude more than 2.5 mag. The original period appears correct. This paper by Claudio et al. apparently used inadequate data source for analysis and this paper gives virtually no improvements for known variables.

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[vsnet-chat 8963] V409 Sct: Mira
by Taichi Kato 14 Oct '21

14 Oct '21

V409 Sct: Mira https://arxiv.org/pdf/2110.07229.pdf ZTF data clearly show Mira-type variation with an amplitude more than 4 mag. The period may be longer (~490 d) than 468 d.

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[vsnet-chat 8962] V408 Sct: Mira
by Taichi Kato 14 Oct '21

14 Oct '21

V408 Sct: Mira https://arxiv.org/pdf/2110.07229.pdf ZTF data clearly show Mira-type variation with an amplitude more than 3.5 mag. The original period appears correct.

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