January 2023 - vsnet-campaign-dn - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-campaign-dn 16857] ASASSN-22oh superhumps
by Taichi Kato 17 Jan '23

17 Jan '23

ASASSN-22oh superhumps Josch Hambsch's observations show that this object started showing ordinary superhumps on Jan. 14 (some hint on Jan. 13). The period (stage A) is 0.05539(8) d and the amplitude is relatively large (0.2 mag). Probably not an extreme WZ Sge star.

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[vsnet-campaign-dn 16856] NSV 4838 superoutburst
by Taichi Kato 16 Jan '23

16 Jan '23

NSV 4838 superoutburst (Time-resolved photometry not particularly requested) YYYYMMDD(UT) mag observer 20230107.867 <168C (Mitsutaka Hiraga) 20230107.9056 <148C (Masayuki Moriyama) 20230109.7233 <142c (Yutaka Maeda) 20230110.7021 146c (Yutaka Maeda) 20230110.7021 146c (Yutaka Maeda) 20230114.883 150C (Jeremy Shears) 20230115.010 15.02C (Gary Poyner)

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[vsnet-campaign-dn 16855] Very bright outburst of DQ Mus
by Taichi Kato 16 Jan '23

16 Jan '23

Very bright outburst of DQ Mus Well outside the formal range of variation. Could be a superoutburst (although I already assigned UGSS based on the past data). Time-resolved photometry is requested. YYYYMMDD(UT) mag observer 20230108.3259 17.711o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.3286 17.755o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.3336 17.921o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.3503 17.581o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230110.0848 16.093o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230110.0890 16.061o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230110.0966 16.038o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230110.1047 16.066o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.2979 15.333o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.2984 15.451o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3033 15.460o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3179 15.169o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3220 15.488o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3323 15.124o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3394 15.490o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.3467 15.169o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230113.553 145 (Rod Stubbings) 20230114.555 144 (Rod Stubbings) \

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[vsnet-campaign-dn 16854] Re: Spectrum of PNV J00215475+5231007
by Taichi Kato 14 Jan '23

14 Jan '23

Re: Spectrum of PNV J00215475+5231007 Taguchi-san probably forgot to mention about He II and Bowen blend, which is frequently seen in (relatively) high-inclination WZ Sge stars in the earliest phase of outburst.

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[vsnet-campaign-dn 16853] ATLAS22bopd: more likely UG
by Taichi Kato 13 Jan '23

13 Jan '23

ATLAS22bopd: more likely UG ATLAS data: YYYYMMDD(UT) mag observer 20221231.1897 15.411o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221231.1992 15.400o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221231.2131 15.487o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20221231.2185 15.447o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230101.9713 15.649o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230101.9749 15.668o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230101.9961 15.698o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230102.0034 15.672o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230104.1508 15.902o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230104.1526 15.925o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230104.1558 15.891o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230104.1612 15.878o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.1758 16.142o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.1785 16.124o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.1942 16.105o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230108.1997 16.221o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230109.9391 16.482o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230109.9446 16.536o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230109.9482 16.489o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230109.9816 16.424o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.1533 16.676o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.1565 16.685o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230112.1611 16.765o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) In quiescence 3 d before (ATLAS). GALEX ID: 063247.060 -722006.25 (2000.0) GALEX_DR5_6385763636743246280 NUV=22.251(0.362) FUV=21.743(0.489)

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[vsnet-campaign-dn 16852] ATLAS23agq = Gaia23afl
by Taichi Kato 13 Jan '23

13 Jan '23

ATLAS23agq = Gaia23afl > [vsnet-alert 27308] Gaia23afl

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[vsnet-campaign-dn 16851] FL Psc outburst?
by Taichi Kato 13 Jan '23

13 Jan '23

FL Psc outburst? Outburst in 2004. YYYYMMDD(UT) mag observer 20230104.4706 <146c (Yutaka Maeda) 20230107.5347 <147c (Yutaka Maeda) 20230110.5801 159:C (Masayuki Moriyama)

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[vsnet-campaign-dn 16850] HH Cnc long outburst
by Taichi Kato 13 Jan '23

13 Jan '23

HH Cnc long outburst Longest and brightest outburst ever, although past observations of a long outburst did not detect superhumps. YYYYMMDD(UT) mag observer 20221218.2008 <183C (Masao Funada) 20221225.7450 135cG (Yutaka Maeda) 20221227.6794 136cG (Yutaka Maeda) 20221231.6711 140cG (Yutaka Maeda) 20221231.7993 145C (Masayuki Moriyama) 20230101.0376 13.98C (Masao Funada) 20230102.6436 142:cG (Yutaka Maeda) 20230102.6437 142:cG (Yutaka Maeda) 20230102.7576 146C (Masayuki Moriyama) 20230103.583 146C (Mitsutaka Hiraga) 20230104.1945 14.04C (Masao Funada) 20230104.7743 14.34C (Masayuki Moriyama) 20230107.8946 145C (Masayuki Moriyama) 20230109.6875 139:c (Yutaka Maeda) 20230110.6695 143:cG (Yutaka Maeda) 20230110.6696 143:cG (Yutaka Maeda)

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[vsnet-campaign-dn 16849] RX Cha outburst
by Taichi Kato 13 Jan '23

13 Jan '23

RX Cha outburst Genuine superoutburst has not been observed recently. YYYYMMDD(UT) mag observer 20221214.3125 <177C (Masao Funada) 20230111.521 146 (Rod Stubbings) 20230112.526 147 (Rod Stubbings)

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[vsnet-campaign-dn 16848] CRTSJ223235.4+304105 likely superoutburst
by Taichi Kato 13 Jan '23

13 Jan '23

CRTSJ223235.4+304105 likely superoutburst Apparent superoutburst in ZTF data in 2020 Aug.-Sep. (precursor + main + rebrightening) YYYYMMDD(UT) mag observer 20230107.1218 16.435zg (ZTF Alert DC mag (Masci+ 2019)) 20230107.1524 16.849zr (ZTF Alert DC mag (Masci+ 2019))

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vsnet-campaign-dn January 2023