[vsnet-campaign-news 285] VSNET Weekly Campaign Summary

[Makoto Uemura]

VSNET Weekly Campaign Summary

*** Headlines ***

Possible Nova in the SMC! 

*** Last week news ***

(new targets)
  Possible Nova in the SMC
                        (RA = 01h14m59s.92, Dec = -73d25'35".8)

    W. Liller reported a discovery of a possible nova on Aug. 7.  
  The new object was about 10.4p mag on an image taken on Aug. 6.388 UT.
  Nothing brighter than 13th magnitude appears at this position on
  earlier photographs, the most recent taken on March 23, 2005
  (vsnet-campaign-nova 1734).  B. Monard confirmed the object at
  V=11.6, and reported the above position (vsnet-campaign-nova 1735).


  EI Psc                (RA = 23h29m54s.30, Dec = +06d28'10".9)

    P. Schmeer reported an outburst of an ultra-short period SU UMa
  star, EI Psc on Aug. 7 at 12.4mag.  The last reported outburst was
  on 2004 Dec. 16 (14.0 by JCN, normal outburst?)  
  (vsnet-campaign-dn 4492).

 
  IGR J05007-7047       (RA = 05h00m46s.09, Dec = -70d44'36".1)  

    According to ATEL #572, J.P. Halpern reported several INTEGRAL
  X-ray sources with optical counterparts.  IGR J05007-7047 has a blue 
  bright optical counterpart in the LMC region.  It may be interesting 
  to take spectra or time-series photometry (vsnet-campaign-xray 372).

 
(old targets)
  FL TrA                   (RA = 16h30m36s.61, Dec = -61d50'11".1)

    M. Uemura performed a period analysis of FL TrA using the data
  sets which were kindly sent by B. Monard in 27-31 July.  The object
  keep on showing superhumps.  The amplitude of superhumps slightly
  decreased to 0.15mag on 30-31 July.   The mean period is
  0.059875(16) day, a very short period, which is reminiscent of the
  WZ Sge class.  The behavior of superhumps is quite typical for
  short-period SU UMa stars; the superhump period first decreased, and
  then, it is now increasing (vsnet-campaign-dn 4488).  On Aug 1 and
  2, the object is still in superoutburst, while superhump amplitudes
  weakened to <0.1 mag.  The object is fading at 0.12 mag/day, a
  typical rate for ordinary SU UMa stars (vsnet-campaign-dn 4491).


  SDSS J225831.18-094931.7 (RA = 22h58m31s.18, Dec = -09d49'31".7)

    H. Maehara performed time-series photometry of this object on
  Aug. 1.  The mean magnitude was 12.8C and the superhumps with an
  amplitude of ~0.15mag were detected.  The superhump period seems to
  be around 0.083 d.  This object was at mag V=14.48 on Aug. 5
  (vsnet-campaign-dn 4489).


  V5116 Sgr             (RA = 18h17m50s.77, Dec = -30d26'31".2)

    The latest observation shows V=11.32 (by K. Nakajima;
  vsnet-campaign-nova 1731, 1732, 1733). 


  V1663 Aql             (RA = 19h05m12s.50, Dec = +05d14'12".0)

    Theh latest observation shows V=15.19 (by K. Nakajima; 
  vsnet-campaign-nova 1730, 1732, 1733).


  BL Lac                (RA = 22h02m42.86s, Dec = +42d16'37.6")

    BL Lac again experienced an outburst (13.5mag; Aug 2 by
  J. Ripero) (vsnet-campaign-blazar 336).


  New variable star near UGC 11800
                        (RA = 21h43m32s.94, Dec = +46d12'22".2)
  
    According to ATEL #573,  D. C. Leonard (California Institute 
  of Technology) performed spectroscopy of this new variable during
  the last outburst, and reported that it is a cataclysmic variable
  (vsnet-campaign-dn 4490).


*** Future schedule ***

  Optical Campaign for Outbursts of Southern Intermediate Polars
    --- Prompt Spectroscopy with Cerro Tololo 1.5-m Telescope ---
    ***** August - December 2005 *****
  For detailed informatio, see:
      http://home.hiroshima-u.ac.jp/~uemuram/ipoutburst2005/index.html
                                        [vsnet-campaign-ip 121]


*** General information ***

  SDSS J225831.18-094931.7
    Light curve obtained by H. Maehara:
      http://www.cetus-net.org/ftp/light_curves/sdssj2258-20050801.png
                                        [vsnet-campaign-dn 4489]


(This summary can be cited.)	

Regards,
Makoto Uemura
Hiroshima University