September 2022 - vsnet-chat - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-chat 9226] NSV 8763 = NSV 8764 = Terz V322: Mira
by Taichi Kato 29 Sep '22

29 Sep '22

NSV 8763 = NSV 8764 = Terz V322: Mira 172837.8 -300253 (2000.0) OGLE-BLG-LPV-239209 M I=14.801(2.923) V=- P=518.0 172837.8 -300253 (2000.0) Gaia_DR3_4058669332287397248 LPV (score=0.90) 172837.8 -300253 (2000.0) Gaia_DR3_4058669332287397248 vtype=LPV P=490.542(36.0962) amp=1.171411

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[vsnet-chat 9225] (fwd) DART impact timeseries
by Taichi Kato 28 Sep '22

28 Sep '22

From: Berto Monard <astroberto13m(a)gmail.com> Date: Tue, 27 Sep 2022 12:38:51 +0200 Subject: DART impact timeseries Herewith timeseries photometry of the DART event that I observed through cloudy skies at KKO The event was live streamed and can be seen on youtube. DART slams into Dimorphos: online, live observation of the impact ? 26 Sept. 2022. - YouTube <https://www.youtube.com/watch?v=DxXzQ2ZizOM>

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[vsnet-chat 9224] ZTF J010643.88+531722.0 = ZTF18acrufyo: orbital period
by Taichi Kato 28 Sep '22

28 Sep '22

ZTF J010643.88+531722.0 = ZTF18acrufyo: orbital period From ZTF data. Porb=0.1393790(8) d. The light curve looks like to me a polar (also low luminosity).

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[vsnet-chat 9223] ZTF J045300.50+224654.0 = ZTF17aacwcof: orbital period
by Taichi Kato 28 Sep '22

28 Sep '22

ZTF J045300.50+224654.0 = ZTF17aacwcof: orbital period From ZTF data. Porb=0.1985406(3) d. Eclipses 1.4 mag. The profile suggests NL+E rather than an eclipsing dwarf nova in quiescence.

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[vsnet-chat 9222] ZTF J212926.04+372210.5 = ZTF18abvbruc: eclipsing polar
by Taichi Kato 28 Sep '22

28 Sep '22

ZTF J212926.04+372210.5 = ZTF18abvbruc: eclipsing polar From ZTF data. Porb=0.0659181(1) d. Eclipses more than 2 mag deep and pre-eclipse dips. Single hump per period.

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[vsnet-chat 9221] ZTF18aacdxxf: WD with unusual variation
by Taichi Kato 09 Sep '22

09 Sep '22

ZTF18aacdxxf: WD with unusual variation According to the ZTF data, this object shows long-term (months) quasi-periodic fading up to 0.8 mag. It cannot be explained by eclipses by a close companion. It may be caused by periodic obscuration of the WD (such as by a dust cloud), but infrared excess is not particular. Gaia data is compatible with a very low-luminosity star (in agreement with a hot WD). 092311.4 +423633 (2000.0) WDcand G=17.449 Teff=12750 - 092311.396 +423633.61 (2000.0) Gaia_DR2_817461778282929664 plx=6.767(0.127) dismod=5.8 pmra=-9.056(0.173) pmdec=-35.130(0.218) G=17.449 BP=17.410 RP=17.487 092311.396 +423633.59 (2000.0) Gaia_EDR3_817461778282929664 plx=6.787(0.084) dismod=5.8 pmra=-8.985(0.082) pmdec=-35.216(0.069) G=17.432 BP=17.441 RP=17.500 092311.424 +423634.51 (2000.0) GALEX_DR5_6373906452883441211 NUV=17.680(0.037) FUV=18.025(0.071)

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vsnet-chat September 2022