[vsnet-outburst 4052] V359 Cen outburst

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

V359 Cen outburst

   Rod Stubbings reports that the dwarf nova V359 Cen is undergoing an
outburst.  The object had been regarded as a possible nova until the
discovery of an outburst in 1999 July by Rod Stubbings.  The last
outburst was detected by Rod Stubbings on 2001 April 25.

  YYYYMMDD(UT)   mag  observer
  20020502.421  <146  (Rod Stubbings)
  20020503.428  <144  (Rod Stubbings)
  20020504.415  <150  (Rod Stubbings)
  20020506.403  <148  (Rod Stubbings)
  20020506.449  <140  (Peter Nelson)
  20020507.390  <140  (Rod Stubbings)
  20020508.378  <148  (Rod Stubbings)
  20020509.515  <150  (Rod Stubbings)
  20020511.558  <148  (Rod Stubbings)
  20020513.396  <150  (Rod Stubbings)
  20020514.419  <148  (Rod Stubbings)
  20020515.625  <140  (Rod Stubbings)
  20020516.387  <148  (Rod Stubbings)
  20020519.685  <138  (Rod Stubbings)
  20020524.387  <138  (Rod Stubbings)
  20020525.399  <138  (Rod Stubbings)
  20020527.410  <138  (Rod Stubbings)
  20020528.362   138  (Rod Stubbings)
  20020528.380   138  (Rod Stubbings)
  20020528.406   138  (Rod Stubbings)

   Time-resolve photometry is very strongly encouraged. Spectroscopic
confirmation (as a dwarf nova) is also encouraged.

   Attached is [vsnet-alert 4849], issued on the 2000 May outburst:
See also Woudt et al. (2001) MNRAS 328, 259, who reported the possible
presence of superhump-like modulations (P=0.078:d) after an outburst in 1999.

> V359 Cen outburst, request for observations
> 
>   Rod Stubbings reports that the dwarf nova V359 Cen is undergoing the
> third historical outburst.  The last outburst was in 1999 July (Stubbings).
> According to a private communication on the 1999 outburst reported the
> confirmation of the outburst, and the possible existence of superhumps.
> The object is better located than this time, and we would encourage
> photometric follow-up by southern observers.  This is a timely excelllent
> southern target for VSNET campaign.  Please report the progress of
> observations, and nightly report to vsnet-campaign.
> 
> V359 CEN    20000510.606  <14.8
>             20000515.499   13.8
> 
> On the 1999 outburst:
> 
> [vsnet-alert 3216] Schmeer's comment:
> 
> Hilmar Duerbeck provides in his nova catalogue the following
> information:
> "Discovered by A. Opolski on Franklin-Adams plates. The object is
> visible on 19 plates taken between 1939 April 20 and 27; the
> maximum was probably missed (Lwow Contr 4 (1935))."
> B1950.0 coordinates:
> R.A. 11h55m42.39s  Decl. -41o29'26.0"  (SRC)
>      11h55m54s           -41o29'       (A. Opolski, Lwow Contr 4)
> Range: 13.8p - 21.0j
> 
> J2000.0 coordinates according to DWS97:
> R.A. 11h58m15.29s  Decl. -41o46'07.9"
> 
> Unfortunately V359 Cen is currently not favourably placed for
> observers in the northern hemisphere.
> 
> Regards,
> Patrick
> 
> ---
> [vsnet-alert 3220]
> 
>    According to Munari and Zwitter (A&AS 128, 277), the spectrum of the
> quiescent counterpart, suggested by Duerbeck, was too noisy to draw a
> conclusion on its nature.
> 
> Regards,
> Taichi Kato

Regards,
VSNET Collaboration Team

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