January 2023 - vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 27322] Spectrum of TCP J06442271+1549388
by Kenta TAGUCHI 17 Jan '23

17 Jan '23

Spectrum of TCP J06442271+1549388 We reported optical spectrum of TCP J06442271+1549388 to TNS and classify it as a CV: https://www.wis-tns.org/object/2023nf # Note: We may not be able to have resolved the H alpha line, considering the observed FWHM (~ 14 A) and the instrumental spectral resolution (~ 500). -- ________________________________________________________________ 田口健太　(TAGUCHI, Kenta) 京都大学大学院理学研究科宇宙物理学教室 (Department of Astronomy, Graduate School of Science, Kyoto University) kentagch(a)kusastro.kyoto-u.ac.jp 09090536980

1 0

[vsnet-alert 27321] Optical Flare of Quasar Ton 599 (4C +29.45)
by Stefan Karge 16 Jan '23

16 Jan '23

Quasar Ton 599 = 4C +29.45 (4FGL J1159.5+2914; z=0.72449) optical Flare. object date (UTC) mag comment -------------------------------------------------- 4C +29.45 20230116.290 13.53V active (OU COAST, Tenerife) Optical activity is accompanied by enhanced gamma-ray and x-ray flux. See Atel #15859. Stefan Karge (SKA) http://quasar.square7.ch/fqm/1156+295.html

1 0

[vsnet-alert 27320] X Ser in outburst
by Robert J. Modic 16 Jan '23

16 Jan '23

CCD Observations Object YYYYMMDD(UT) Mag Obs Chart Remarks SERX 20230115.503 16.35V MRV Henden MPO61; Err 0.06; Outburst Instruments: RCOS 24" w/FLI PL1603, AAVSONet (MPO61) Observer: Robert J. Modic (MRV)

1 0

[vsnet-alert 27319] 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)

1 0

[vsnet-alert 27318] 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) \

1 0

[vsnet-alert 27317] X Ser possible outburst
by Robert J. Modic 15 Jan '23

15 Jan '23

CCD Observations Object YYYYMMDD(UT) Mag Obs Chart Remarks SERX 20230114.505 16.65V MRV Henden MPO61; Err 0.04; Possible Outburst Instruments: RCOS 24" w/FLI PL1603, AAVSONet (MPO61) Observer: Robert J. Modic (MRV)

1 0

[vsnet-alert 27316] 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.

1 0

[vsnet-alert 27315] Spectrum of PNV J00215475+5231007
by Kenta TAGUCHI 13 Jan '23

13 Jan '23

Spectrum of PNV J00215475+5231007 We reported optical spectrum of PNV J00215475+5231007 to ATel: https://www.astronomerstelegram.org/?read=15857 -- ________________________________________________________________ 田口健太　(TAGUCHI, Kenta) 京都大学大学院理学研究科宇宙物理学教室 (Department of Astronomy, Graduate School of Science, Kyoto University) kentagch(a)kusastro.kyoto-u.ac.jp 09090536980

1 0

[vsnet-alert 27314] 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)

1 0

[vsnet-alert 27313] ATLAS23agq = Gaia23afl
by Taichi Kato 13 Jan '23

13 Jan '23

ATLAS23agq = Gaia23afl > [vsnet-alert 27308] Gaia23afl

1 0

2024

2023

2022

2021

vsnet-alert January 2023