[vsnet-alert 3718] TmzV36 very rare outburst (fwd)

From: Joe Patterson <*jop_at_astro.columbia.edu*> Date: Thu, 18 Nov 1999 08:37:48 -0700 (MST) · jop_at_astro.columbia.edu

Dear CBAers,

Patrick's discovery of Takamizawa V36 in outburst seems to me to
warrant time-series coverage.  There's no such reported coverage yet,
and the prospects for periodic humps are very decent.  Something to
console us for the "background rate" of Leonids last night!

Patrick's reported astrometric position is 9 16 50.7 +28 49 42.  Kind of a
morning object, not the most convenient but quite far from the Moon.
Pretty close to the alleged (certainly indeterminate last night!) Leonid
radiant.  So let's move on from the missing Leonids and behold the power
of the CBA.

    joe

---------- Forwarded message ----------
Date: Thu, 18 Nov 1999 14:27:12 +0100 (CET)
From: Patrick Schmeer <extpasc@rz.uni-sb.de>
To: vsnet-alert@kusastro.kyoto-u.ac.jp
Cc: GHA07243@nifty.ne.jp, Patrick Schmeer <extpasc@rz.uni-sb.de>
Subject: (cba:news) [vsnet-alert 3718] TmzV36 very rare outburst

CCD magnitudes obtained by P. Schmeer, Bischmisheim, Germany:

TmzV36  (UG:)
TmzV36  991113.536  180:C  Scp
TmzV36  991114.535  179C   Scp
TmzV36  991117.528  147C   Scp
Sequence:   USNO-A2.0 (red magnitudes)
Instrument: IRO (0.5-m RCT + AP-8)

This likely cataclysmic variable is undergoing its second ever
recorded outburst. The only previously known brightening occurred
in 1994 November (vsnet-obs 10504, see below).
Robert Fried took several images of TmzV36 last night at my request.
The (blue) object is visible at mag 14.9 on his R-band image taken
on Nov. 18.456 UT (same sequence as above).

Data from USNO-A2.0: 091650.693 +284943.07 (2000.0) 17.4 18.8

Time-resolved photometry (and spectroscopy) during the current outburst
is very urgently required.

Regards,
Patrick

P.S.:
Excerpt from vsnet-obs 10504:
---------------------------------------------------------------------------
[vsnet-obs 10504] New Takamizawa variables (TmzV34-V36)

  Kesao Takamizawa (Nagano, Japan) reports the following discoveries of
variable stars (TmzV34-V36)

  TmzV36 = USNO1125.05932438 091650.670 +284942.54 17.4 19.7
           091650.7 +284942 (2000.0, Takamizawa's semiaccurate measurement)

         Takamizawa reports that the star is visible on Real-Sky CD-ROM
         at magnitude ~18.

object         YYMMDD(UT)   mag  code
TmzV36         940306.519  <153p  Tmz.VSOLJ
TmzV36         940428.535  <150p  Tmz.VSOLJ
TmzV36         940512.560  <145p  Tmz.VSOLJ
TmzV36         941102.718  <145p  Tmz.VSOLJ
TmzV36         941129.809  138p  Tmz.VSOLJ
TmzV36         941130.732  137p  Tmz.VSOLJ
TmzV36         950222.480  <153p  Tmz.VSOLJ
TmzV36         951020.747  <153p  Tmz.VSOLJ
TmzV36         960113.550  <153p  Tmz.VSOLJ
TmzV36         960309.472  <153p  Tmz.VSOLJ
TmzV36         970929.794  <153p  Tmz.VSOLJ
TmzV36         971029.751  <153p  Tmz.VSOLJ
TmzV36         980102.610  <153p  Tmz.VSOLJ
TmzV36         980318.560  <153p  Tmz.VSOLJ
---------------------------------------------------------------------------