[vsnet-campaign-news 287] VSNET Weekly Campaign Summary

[uemuram at hiroshima-u.ac.jp]

VSNET Weekly Campaign Summary

*** Headlines ***

Hard X-ray outburst of a symbiotic star ----- RT Cru

*** Last week news ***

(new targets)
  RT Cru                   (RA = 12h34n53s.74, Dec = -64d33'56".0)

    According to ATel #591, the hard X-ray source, IGR J12349-6434 
  (= SWIFT J1234.7-6433) has been detected by Swift XRT.  This X-ray
  source is identified with the symbiotic star RT Cru, as previously 
  suggested by N. Masetti et al. ATel # 528.  This symbiotic X-ray 
  transient is now in outburst (vsnet-campaign-xray 381, 
  vsnet-campaign-symbio 106).  In the ASAS-3 data base, the object is 
  gradually fading using the past few years (vsnet-campaign-xray 382).  
  T. Kato commented that its short-term flickering, which has been
  known in past observations, would be usual for a symbiotic system
  with a white dwarf, but is uncommon in a hard X-ray transient 
  (vsnet-campaign-xray 383, vsnet-campaign-symbio 108).


  AO Oct                   (RA = 21h04m59s.07, Dec = -75d21'22".5)

    An SU UMa-type dwarf nova, AO Oct is probably in superoutburst
  (14.4mag on Aug. 25 by R. Stubbings) (vsnet-campaign-dn 4509).


  V1363 Cyg                (RA = 20h06m11s.58, Dec = +33d42'37".7)

    Based on recent observations reported to VSNET, T. Kato reported:
  "The cataclysmic variable V1363 Cyg (type still undetermined) has
  been atypically bright during the past one month.  There is emerging
  evidence that the object is still brightening.  Please watch
  carefully.  The historical brightest record was 13.0 (p)."
  (vsnet-campaign-dn 4510, vsnet-campaign-nl 150).


  V725 Tau                 (RA = 05h38m54s.5720, Dec = +26d18'56".822)

    According to ATel #595, M.H. Finger reported a renewed activity of
  a Be/X-ray pulsar, A 0535+26 (=V725 Tau).  The object was detected
  at 20 mCrab on August 26.7 by the PCA/RXTE (vsnet-campaign-xray
  384).  The object is rapidly brightening in X-rays 
  (vsnet-campaign-xray 385).
  

  SN 2005dm

    According to ATel #596, the Nearby Supernova Factory reported that
  SN 2005dm is a SN 1991bg-like Type Ia, namely a dim and red SN
  (vsnet-campaign-sn 1040).


(old targets)
  New object near M27      (RA = 19h59m51s.29, Dec = +22d42'32".3)
  (= OT_J195951.3+224232)

    T. Vanmunster made a ~5 hour photometric run and obtained a light
  curve showing modulations with amplitudes of 0.2-0.3 mag, and a
  slowly fading trend (vsnet-campaign 1596).  The modulations have a
  period of 0.058 d.  The light curve resembles that of SU UMa-type
  superhumps  rather than QPOs as inferred from the initial report.  
  The SU UMa-star nature of this object has been established
  (vsnet-campaign 1597, vsnet-campaign-dn 4508).  W. Renz reported a
  possible identification of its quiescent counterpart, and an
  amplitude possibly over 10 mag.  If it is the case, the outburst
  amplitude would be very large, implying a WZ Sge-type system
  (vsnet-campaign 1595, vsnet-campaign-dn 4513).  The object is fading 
  (vsnet-campaign-dn 4511, vsnet-campaign 1594, vsnet-campaign-dn 4512).


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

    K. Nakajima reported V=11.45 on Aug 26 (vsnet-campaign-nova 1743).


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

    K. Nakajima reported V=15.89 on Aug 26 (vsnet-campaign-nova 1742,
  1743). 


  V1188 Sco                (RA = 17h44m21s.59, Dec = -34d16'35".7)

    K. Nakajima reported V=12.37 on Aug 26 (vsnet-campaign-nova 1743).


*** 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 ***

  RT Cru
    ASAS-3 light curve:
      http://www.astrouw.edu.pl/cgi-asas/asas_lc/123453-6433.9
                                        [vsnet-campaign-xray 382]
  FN Sgr
    Orbital period, see [vsnet-campaign-symbio 109]

  SN-specific vsnet-recent ML, see [vsnet-campaign-sn 1039]

  New dwarf nova near M27
    Chart provided by W. Renz, see [vsnet-campaign-dn 4513]


(This summary can be cited.)	

Regards,
Makoto Uemura
Hiroshima University