[vsnet-campaign 1312] VSNET Weekly Campaign Summary

[Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>]

VSNET Weekly Campaign Summary

*** Last week news ***

(new targets)
  IY UMa		(RA = 10h43m56s.87, Dec = +58d07'32".5)

    On May 7, a superoutburst of the deeply eclipsing SU UMa-type 
  dwarf nova IY UMa was detected (vsnet-campaign-dn 2362, 2364, 
  2366).  The light curve taken by L. Cook on May 8 shows superhumps 
  with a complex structure.  T. Kato noticed that the overall light 
  curve resembles that of DV UMa on the first night of the 1999 
  superoutburst (vsnet-campaign-dn 2379).  Superhumps were observed 
  to increase in amplitude in the early May 11, when their amplitude 
  reached to 0.8mag (vsnet-campaign-dn 2390).  During the very early
  phase of the superoutburst, the period of superhump was relatively 
  short (0.07500 d), and then the superhump period increased.  
  The data on May 10-11 shows a superhump period of 0.07643 d 
  (vsnet-campaign-dn 2391, 2396).  The VSNET collaboration team has 
  received CCD time-series observations which were kindly sent from 
  L. Cook, D. Starkey, J. Pietz, G. Masi, and the Nyrola team 
  (vsnet-campaign-dn 2398).  The superoutburst is still ongoing 
  (vsnet-campaign-dn 2371, 2372, 2373, 2377, 2381, 2382, 2383, 2384, 
  2386, 2387, 2393, 2394).


  SN 2002cs		(RA = 18h46m59s.96, Dec = +45d42'19".7)

    SN 2002cs was independently discovered on May 5 by the LOTOSS 
  team and by M. Armstrong.  The object was 16.3mag (Armstrong) and 
  15.9mag (KAIT) at its discovery.  It is located about 25" due east 
  of the nucleus of NGC 6702 (vsnet-campaign-sn 421).  IAUC 7894 
  informed that the spectrum, taken by the Padova team, the CfA team, 
  and the Lick team on May 7, revealed that it is of type Ia near 
  maximum.  They all noted that the expansion velocity is somewhat 
  larger than that for a normal one, which suggests that it can be 
  intrinsically brighter (vsnet-campaign-sn 424).


  GP Com		(RA = 13h05m42s.85, Dec = +18d01'02".6) 

    A possible outburst of this helium cataclysmic variable was 
  indicated on May 7 (14.9mag; vsnet-campaign 1310), but then 
  confirmed that it was not in a major outburst (vsnet-campaign 
  1311, vsnet-campaign-dn 2365, 2367, 2368, 2370, 2374, 2389, 2392).


  EG Cnc		(RA = 08h43m04s.04, Dec = +27d51'49".9)

    According to AAVSO News Flash No. 962, a positive observation 
  of EG Cnc has been reported without a special comment  
  (vsnet-campaign-dn 2385), but the Kyoto team confirmed that it 
  was faint on May 12 (vsnet-campaign-dn 2397). 
 

(continuous targets) 
  WZ Sge		(RA = 20h07m36s.53, Dec = +17d42'15".3)

    WZ Sge was reported to be still slightly brighter than its 
  quiescent level (vsnet-campaign-dn 2399).


  SN 2002cr		(RA = 14h06m37s.59, Dec = -05d26'21".9)

    The object remains around the maximum (vsnet-campaign-sn 422).


  UV Per		(RA = 02h10m13s.58, Dec = +57d11'26".8)

    The short outburst has faded (vsnet-campaign-dn 2380).


  MKN 421		(RA = 11h04m27s, Dec = +38d12'32") 

    The object is now again in a bright state (vsnet-campaign-blazar 
  262).


  V503 Cyg		(RA = 20h27m15s.61, Dec = +43d41'45".5)

    The superoutburst is still ongoing.  T. Kato commented that 
  the well-known regular pattern of superoutbursts has been disturbed 
  since the end of 2001 (vsnet-campaign-dn 2400).


  CR Boo		(RA = 13h48m55s.42, Dec = +07d57'30".3)

    It is still bright at about 14.0-14.1mag (vsnet-campaign-dn 2401).


  delta Sco		(RA = 16h00m19s.9, Dec = -22d37'17")

    Recent observations have indicated that the object slightly 
  faded (vsnet-campaign-be 183).


  V803 Cen		(RA = 13h23m44s.5, Dec = -41d44'30".1)

    The faint state was terminated by an outburst (14.4mag) 
  occurred on May 7 (vsnet-campaign-dn 2361, 2369, 2378).

 
  FG Sge		(RA = 20h11m56s.14, Dec = +20d20'03".6)
  
    The slow brightening continues.  The object is now at about 
  13.4mag (vsnet-campaign-rcb 33).


  V2051 Oph		(RA = 17h08m19.1s, Dec = -25d48m31.1s)

    R. Stubbings reported that the object is undergoing a very 
  long outburst at a faint level (vsnet-campaign-v2051 11).  
  The Kyoto team performed CCD time-series photometry on May 12 
  and confirmed that it is still in outburst.  The light curve 
  shows double humps, which resemble a combination of superhumps 
  and late superhumps (vsnet-campaign-v2051oph 13).  The outburst 
  is still ongoing (vsnet-campaign-v2051oph 8, 9, 10, 13).


  IX Dra		(RA = 18h12m32s.2, Dec = +67d04'41")

    An outburst of 15.5mag was reported on May 8 by P. A. Dubovsky 
  (vsnet-campaign-dn 2388).  The next outburst was observed on 
  May 11 at 15.3mag by M. Reszelski (vsnet-campaign-dn 2395).


  V838 Mon		(RA = 07h04m04s.816, Dec = -03d50'50".94)

    Observations by S. Kiyota shows that the object was Ic=7.72 
  on May 2 (vsnet-campaign-v838mon 366).  A. Henden commented that 
  CCD observations with V- and Rc-filters are seriously affected 
  with the contribution from the nebula (vsnet-campaign-v838mon 367).
  The object is still faint (vsnet-campaign-v838mon 368, 369).
 
  
  V4334 Sgr		(RA = 17h52m32s.70, Dec = -17d41'07".9)

    An observation of 16.4C mag reported by D. West on May 9 
  implies that the object is possibly recovering (vsnet-campaign-rcb 32).


  BL Lac		(RA = 22h02m42s.86, Dec = +42d16'37".6)

    The object was reported to be slightly brightening 
  (vsnet-campaign-blazar 261).


*** Future schedule ***

  NEW X-RAY RESULTS FROM CLUSTERS OF GALAXIES AND BLACK HOLES
	34th COSPAR Scientific Assembly
	10th to 12th October 2002 - Houston, Texas
	For more information, visit the session website:
	www.mssl.ucl.ac.uk/www_astro/cospar
					[vsnet-campaign-xray 124]
					[vsnet-campaign-agn 2]
					[vsnet-campaign-xray 133]
				
  SUPERNOVAE (10 YEARS OF SN1993J)
	22-26 April 2003, Valencia, Spain
	Web site: http://vsnet.uv.es/2003supernovae/
					[vsnet-campaign-sn 342]

  34TH COSPAR - GRB AFTERGLOW PHYSICS
	HOUSTON, TX, USA, 10-19 OCTOBER 2002
	Main Scientific Organizer (MSO): 
	Elena Pian - INAF, Astronomical Observatory of Trieste, Italy - 
	pian@ts.astro.it
	http://vsnet.ts.astro.it/topics/topix.html
					[vsnet-campaign-grb 1]

  MASS-LOSING PULSATING STARS AND THEIR CIRCUMSTELLAR MATTER
	Sendai, Japan: May 13-16, 2002
	contact to: Dr. M. Seki or wsloc@astr.tohoku.ac.jp
	http://vsnet.astr.tohoku.ac.jp/ws2002/
					[vsnet-campaign-mira 3]

  International Conference on Classical Nova Explosions
	 Sitges (Barcelona), Spain: 20-24 May 2002
    For more detailed information, see http://vsnet.ieec.fcr.es/novaconf
					[vsnet-campaign-nova 643]
					[vsnet-campaign-nova 666]

  Blazar meeting at Tuorla: June 17-21, 2002
	for more information, see http://vsnet.astro.utu.fi/blazar02
					[vsnet-campaign-blazar 232]


*** General information ***

  IY UMa
    Eclipse ephemeris, see [vsnet-campaign-dn 2376, also see, 2363, 2375]

  V2051 Oph
    Eclipse ephemeris, see [vsnet-campaign-v2051oph 12]

  VSNET-RECENT-SN archive
    The archives can be reached from a VSNET top page:
    http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/
    , or directly:
    http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-recent-sn/maillist.html
					[vsnet-campaign-sn 423]

  New list: vsnet-campaign-flare, see [vsnet-campaign-flare 1]


(This summary can be cited.)	

Regards,
Makoto Uemura

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