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[vsolj-alert 897] VSNET Weekly Campaign Summary



From owner-vsnet-campaign@kusastro.kyoto-u.ac.jp Tue Jun 12 03:01 JST 2001
To: vsnet-campaign
Date: Tue, 12 Jun 2001 03:01:22 +0900
From: Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>
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Subject: [vsnet-campaign 971] VSNET Weekly Campaign Summary
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VSNET Weekly Campaign Summary
 
*** Last week news ***

(new targets) 
  LMC V2434		(RA = 05h24m01s.5, Dec = -71d09'37")

    On June 6, W. Liller reported a major outburst of LMC V2434, 
  a M2eIII star, which is also known as a supersoft X-ray source.  
  The object usually remains at 12.6mag, but flared up to 9.8mag.
  This outburst may be some kind of a major outburst of a supersoft 
  X-ray source, or a some kind of nova explosion, or symbiotic 
  outburst or X-ray outburst; the nature is quite unknown 
  (vsnet-campaign-xray 67, vsnet-campaign 965).  W. Liller reported 
  on June 7 that the object returned to quiescent state and the 
  outburst was rapidly faded (vsnet-campaign 966, vsnet-campaign-xray 68).
  T. Kato reported that the star is listed as B72, a foreground 
  LPV variable = Case 48-8 (vsnet-campaign-xray 69, vsnet-campaign 967).  
  H. Yamaoka reported that DSS images shows no significant proper 
  motion (vsnet-campaign-xray 70, vsnet-campaign 968).  The object 
  remains calm after rapid decline (vsnet-campaign 970).
 
 
  V478 Her		(RA = 17h21m05s.5, Dec = +23d39'36")

    AAVSO News Flash No. 793 reported that the recently identified
  cataclysmic variable V478 Her is brightening.  CCD observation by 
  Diethelm recoreded the object at 15.70 on June 4.9599 UT.
  The object had been regarded as an irregular variable until
  quite recently.  The reported range of variability is 15.5-17.1p 
  (vsnet-campaign 963).  T. Vanmunster confirmed the outburst 
  (vsnet-campaign 964).  He also performed time-series observation 
  on June 8 and detected 0.33mag modulations which seems to 
  attributed to superhumps.  If it is the case, V478 Her is a new 
  member of SU UMa stars.  T. Vanmunster derived a preliminary
  hump period of 0.129 d, which is near the upper limits of the 
  "period gap" (vsnet-campaign 969).


  V1363 Cyg		(RA = 20h06m11s.5, Dec = +33d42'37")

    AAVSO News Flash No. 793 reported that the peculiar cataclysmic 
  variable V1363 Cyg is brightening.  CCD observation by Diethelm 
  recoreded the object at 15.41 on June 4.9974 UT.  The object has 
  been in its extended low state for years long (vsnet-campaign 962).


  SN 2001ck		(RA = 14h37m50s.08, Dec = +30d29'02".2)

    IAUC 7641 informed the discovery of a new SN 2001ck.  The host 
  galaxy (UGC 9425) is a northern part of the colliding pair galaxies 
  (= Arp 241).  SN locates fairly near to the northern nucleus.  
  The recession velocity of this pair is about 10000 km/s, from which 
  the expected maximum of typical SN Ia is about 17.3.  The reported 
  magnitudes (June 3.3 UT, 172:C; 4.3, 168:C) suggest that it can be 
  somewhat overluminous one (vsnet-campaign-sn 206).


  SN 2001cl		(RA = 22h22m37s.52, Dec = -04d07'30".8)

    IAUC 7641 informed the discovery of a new SN 2001cl.  The host 
  galaxy of SN 2001cl (NGC 7260) has another NGC entry as 7257.   
  The SN superimposed on the southeastern arm of the face-on barred 
  spiral galaxy.  The SN was discovered at mag about 17.2 on June 4.5 
  and confirmed at the same mag on the next day.  The expected 
  maximum of typical SN Ia is about 15.7 (vsnet-campaign-sn 206).


  SN 2001cm		(RA = 15h34m06s.70, Dec = +56d41'26".2)

    IAUC 7641 informed the discovery of a new SN 2001cm.  SN 2001cm 
  locates on the dust lane of the edge-on spiral galaxy, so can be 
  affected by the extinction.  It was mag about 16.8 on June 5.72
  UT and rising.  The expected maximum of typical SN Ia is about 15.0 
  (vsnet-campaign=sn 206).


  NY Ser		(RA = 15h13m02s.39, Dec = +23d15'07".1)

    A new outburst at 14.7mag was reported by G. Poyner on June 7 
  and confirmed on June 8 and 9.  It may be a superoutburst 
  (vsnet-campaign-dn 888).


(continuous targets) 
  SBS 1017+533		(RA = 10h20m26s.65, Dec = +53d04'32".6)

    The superoutburst continues (vsnet-campaign-dn 878).


  HS Vir		(RA = 13h43m38s.5, Dec = -08d14'04".1)

    The time series data presented by S. Kiyota is available at 
  [vsnet-campaign-data 66].


  V660 Her		(RA = 17h42m07s.3, Dec = +23d47'37".3)

    The superoutburst continues and the current magnitude is 
  fainter than 14.6mag (vsnet-campaign-dn 887).


  V1548 Aql		(RA = 19h07m28s.42, Dec = +11d44'45".8)
   
    J. M. Llapasset's observations on June 5 imply a brightening of 
  this nova (vsnet-campaign-nova 338).  The brightening seems to 
  continue (vsnet-campaign-nova 339, 340).


  AL Com		(RA = 12h32m25s.90, Dec = +14d20'42".5)
  
    The superoutburst is still ongoing (vsnet-campaign-dn 877, 881, 
  884, 885, 886, 893).


  V803 Cen		(RA = 13h23m44.5s, Dec = -41d44'30".1)

    The faint state continues (vsnet-campaign-dn 892).


  3C 279		(RA = 12h56m11s.1, Dec = -05d47'20")

    The object is still active (vsnet-campaign-blazar 202, 203).


  V445 Pup		(RA = 07h37m56s.88, Dec = -25d56'59".1)

    The object is again brightening.  The current magnitude is 
  brighter than 10mag (vsnet-campaign-nova 341, 342).


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

    A possible outburst was detected by M. Reszelski on June 3 
  at about 15.2mag (vsnet-campaign-dn 876).  The outburst was 
  confirmed in R. Novak's observation on June 5 at about 15.7mag 
  (vsnet-campaign-dn 883).  After the outburst faded, a new outburst 
  at 14.5 mag was reported by M. Reszelski and confirmed by G. Poyner.  
  This outburst is likely a superoutburst (vsnet-campaign-dn 890).


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

    The object is relatively calm at around 14.2mag (vsnet-campaign-dn 879).


  RX J0640-24		(RA = 06h40m47s.72, Dec = -24d23'14".5)

    An outburst reported by B. Monard on May 25 were rapidly faded, 
  and then, it again experienced a new outburst at 11.4mag 
  (vsnet-campaign-dn 889).  The outburst is still ongoing  
  (vsnet-campaign-dn 891).


*** Future schedule ***

  CV confrence at Goettingen, 5-10 August 2001
	[vsnet-announce 15, 20]

 
  Elizabeth and Frederick White Workshop
    AGN variability across the Electromagnetic Spectrum
      25 - 29 June 2001 Sydney, Australia

    For more information, see [vsnet-campaign-blazar 168].


  Two Years of Science with Chandra *
    * This meeting will also be the 12th Annual Maryland Astrophysics 
	Conference
	September 5-7, 2001
    For more information, see [vsnet-campaign-xray 66]


*** General information ***

  V551 Sgr
    Kyoto image:
	http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/DNe/V551_Sgr/v551kyoto.gif
			[vsnet-campaign-dn 882]
  V478 Her
    Outburst image presented by T. Vanmunster:
	http://vsnet.lunarpages.com/cbabelgium
			[vsnet-campaign 964]


(This summary can be cited.)

Regards,
Makoto Uemura

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