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[vsolj-alert 819] VSNET Weekly Campaign Summary

From owner-vsnet-campaign@kusastro.kyoto-u.ac.jp Tue Oct 10 04:48 JST 2000
To: vsnet-campaign
cc: uemura
Date: Tue, 10 Oct 2000 04:47:45 +0900
From: Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>
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Subject: [vsnet-campaign 528] VSNET Weekly Campaign Summary
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VSNET Weekly Campaign Summary
*** Last week news ***

(new targets)
  ES Dra		(RA = 15h25m32s.26, Dec = +62d00'56".9)

    T. Kinnunen detected a rare outburst of the unknown cataclysmic variable 
  ES Dra on October 6 at 13.7mag.  He commented this is the first detected 
  one as far as he knows (vsnet-alert 5307).  During his ~5 hours observation 
  on October 6, the magnitude is varied between 13.4 - 13.9 
  (vsnet-campaign-dn 190).  The outburst is now ongoing, and the current 
  magnitude is around 13.8 (vsnet-campaign-dn 191).
    Close monitorings and time-series observations are strongly encouraged 
  to make clear the nature of this variable star.

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

    The observations by E. Muyllaert and G. Poyner showed an outburst 
  of SU UMa-type dwarf nova V503 Cyg on October 8 (14.5: and 14.8mag).  
  It was previously reported that it shows a Z Cam like standstill at V~15.7, 
  and T. Kato commented that the star has apparently changed its outburst 
  pattern in recent years (vsnet-campaign 525).  From the observation on 
  October 9, M. Uemura reported a possible rapid decline of this object 
  (vsnet-campaign 527).
    Time-series observations will give hints of the current status.

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

    A. Oksanen, M. Moilanen, and J. Sorvari observed on IY UMa at 
  Nyrola observatory on September 30, and got 7 hours time-series data 
  which shows deep eclipses and clear superhumps (vsnet-campaign-dn 187).
  M. Uemura reported an eclipse with the depth of 1.2mag from October 3 
  observation at Kyoto.  The current magnitude is around 14.6mag 
  (vsnet-campaign-dn 193).  
    Time-series observations, particularly, including eclipses are 
  strongly urged.

  V632 Cyg		(RA = 21h35m54s.18, Dec +40d25'27".9)

    The object is still in outburst.  On October 3, the magnitude 14.5 
  was reported by G. Hanson (vsnet-campaign-dn 185).
    The current outburst is a rare one.  Time-series observations are 

  V452 Cas		(RA = 00h52m20s.87, Dec = +53d52'17".6)

    From the observation on October 9, M. Uemura reported the superoutburst 
  seems to be terminated (vsnet-campaign 526).

  BF Ara		(RA = 17h38m10s.40, Dec = -47d10'43".4)

    The fading from the outburst was observed.  R. Stubbings reported 
  <14.4 and <14.0 mag on October 4 and 8, respectively (vsnet-campaign-dn 192).

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

    The striking activity is still seen.  The bright magnitude of 13.6 
  was reported on October 7 by J. Ripero (vsnet-campaign-blazer 79).
  The fainter magnitude was then reported on October 8 (14.0mag 
  by T. Kinnunen and E. Muyllaert; vsnet-campaign-blazer 80).

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

    The re-brightening is ongoing, and S. Otero reported that the star became 
  brighter than ever before (October 4, 1.86mag; vsnet-campaign-be 64).
  B. Fraser also reported the brightening (V=1.87 on October 7; 
  vsnet-campaign-be 67).  He further reported V=1.89 on October 9 
  (vsnet-campaign-be 68). 
    More observations including spectroscopy and polarymetry are urged.

  PKS2005-489           (RA = 20h05m47s.4, -48d58'45".0)

    The blazer PKS2005-489 is still bright.  The magnitude is 
  around 12.2 - 12.6 (vsnet-campaign-blazer 78).

  XTE J1118+480		(RA = 11h18m10s.9, Dec = +48d02'12".9)

    M. Moilanen took a CCD image of XTE J1118+480 on October 7.   
  Using the image, M. Uemura reported the current magnitude, 18.00 mag, 
  is slightly brighter than its quiescent state (vsnet-campaign-xray 56).

*** General information ***

  IY UMa

    Data and light curve observed at Nyrola observatory can be seen at:



					[vsnet-campaign-dn 187]

    GIF animation of the eclipse presented by M. Moilanen can be seen at:


					[vsnet-campaign-dn 188]
  Delta Sco

    Light curve presented by S. Otero can be seen in [vsnet-campaign-be 65].

  V402 And

       On [vsnet-campaign 523] and [vsnet-campaign-news 22] the last 
     VSNET Weekly Campaign Summary about V402 And, for the position 

	(RA = 00h11m07s.25, Dec = +33d32'36".1)


	(RA = 00h11m07s.25, Dec = +30d32'36".1).
      Sorry for confusion.

(This summary is reproduction free.)

Makoto Uemura

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