vsnet-outburst December 2021

vsnet-outburst@ooruri.kusastro.kyoto-u.ac.jp

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[vsnet-outburst 28075] V452 Cas
by Jeremy Shears 01 Dec '21

01 Dec '21

V452 Cas Dec 1.801 16.0C Jeremy Shears Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows

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[vsnet-outburst 28074] Activity (2021-12-01)
by Hiroyuki Maehara 01 Dec '21

01 Dec '21

Visual magnitude estimates by VSOLJ members object YYYYMMDD(UT) mag code ANDAR 20211201.624 146 Mhh.VSOLJ ANDIW 20211201.603 142 Mhh.VSOLJ ANDRX 20211201.601 115 Mhh.VSOLJ CAMZ 20211201.651 111 Mhh.VSOLJ outburst CASAM 20211201.616 128 Mhh.VSOLJ outburst CMAHL 20211201.644 117 Mhh.VSOLJ CYGSS 20211201.594 107 Mhh.VSOLJ ERIAH 20211201.639 144 Mhh.VSOLJ ERIIM 20211201.636 119 Mhh.VSOLJ MASTER_OT_J030227.28+191754.5 20211201.628 123 Mhh.VSOLJ ORICN 20211201.644 151 Mhh.VSOLJ PERKT 20211201.617 123 Mhh.VSOLJ outburst Observer: Hiroyuki Maehara (Okayama, Japan) Instruments: 30cmL

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[vsnet-outburst 28073] TU Men possible superoutburst
by Taichi Kato 01 Dec '21

01 Dec '21

TU Men possible superoutburst As pointed out by Rod Stubbings in [vsnet-outburst 28070], TU Men has brightened after a possible precursor followed by a possible dip. This outburst may be a long-sought superoutburst. Although this object is known as an SU UMa star above the period gap, superhumps have only been recorded back to 1980! No true superoutbursts have been recorded since. https://ui.adsabs.harvard.edu/abs/1984A%26A...132..187S/abstract YYYYMMDD(UT) mag observer 20211127.510 165 (Rod Stubbings) 20211128.506 166 (Rod Stubbings) 20211129.487 125 (Rod Stubbings) 20211129.537 128 (Rod Stubbings) 20211129.646 129 (Rod Stubbings) 20211130.466 118 (Rod Stubbings) 20211130.507 118 (Rod Stubbings) As one can see in the above paper dealing with the 1980 superoutburst, the initial phase was not observed and there was a gap in the middle. These observations were made before we have sufficient knowledge about superhump evolution. Southern observers, please turn your telescope to TU Men and perform time-resolved photometry to cover the entire phases of the outburst. Such a chance may be only once in 40 years!

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vsnet-outburst December 2021