[vsolj-alert 898] VSNET Weekly Campaign Summary

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

From owner-vsnet-campaign@kusastro.kyoto-u.ac.jp Tue Jun 19 03:32 JST 2001
To: vsnet-campaign
Date: Tue, 19 Jun 2001 03:32:05 +0900
From: Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>
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Subject: [vsnet-campaign 980] VSNET Weekly Campaign Summary
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VSNET Weekly Campaign Summary
 
*** Last week news ***

(new targets) 
  SN 2001cn		(RA = 18h46m17s.84, Dec = -65d45'41".8)

    SN 2001cn was discovered by R. Chassagne on June 11.95 at mag 
  about 14.8, and remains at nearly the same magnitude until June 
  13.531 when R. Sanrallo confirmed it.  The SN position is about 
  2" west and 18" south of the nucleus of the face-on spiral galaxy 
  IC 4758.  The reported magnitude is somewhat brighter than the 
  expected maximum (V magnitude 15.4) of typical SN Ia for this 
  galaxy's recession velocity.  It would possibly be caused that 
  the discoverer (and also confirmer) used ST-7E, which is sensitive 
  for blue light, and USNO-A2.0 r magnitude for the comparison stars. 
  SNe in the early stage is usually bluer than the surrounding
  comparison stars, so the blue-sensitive CCD (without filter) will
  catch more photons from the young SN than stars whose r magnitude is
  comparable with that of SN.  It is possible, however, that this SN is
  intrinsically bright (vsnet-campaign-sn 208).


  RX J0944.5+0357	(RA = 09h44m31s.8, Dec = +03d58'06")

    P. Schmeer reported that this dwarf nova is currently undergoing 
  its second ever recorded outburst.  The only previously recorded 
  outburst was detected by T. Watanabe on 2001 Jan 4.740 UT at mv= 13.2 
  (vsnet-campaign 977).


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

    P. Schmeer detected an outburst of the eclipsing SU UMa type 
  dwarf nova, IY UMa at about 14mag on June 14 (vsnet-campaign 976).
  T. Kato noticed the suggested supercycle indicates the current 
  outburst is a superoutburst (vsnet-campaign 978).  The object 
  has further brightened, which support it is a genuine superoutburst 
  (vsnet-campaign-dn 906, 907).  The superoutburst still continues 
  (vsnet-campaign-dn 908, 911).

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

    An outburst of BL Lac (13.7mag) was detected on June 8 
  (vsnet-campaign-blazar 204).  The bright and active state continues 
  (vsnet-campaign-blazar 205).

 
  QW Ser		(RA = 15h26m13s.99, Dec = +08d18'03".8)

    M. Simonsen reported an outburst of QW Ser at 13.7mag on June 18 
  (vsnet-campaign-dn 913).


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

    The fading from the superoutburst was reported on June 10 
  (vsnet-campaign-dn 896).


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

    The superoutburst continued until around June 10 
  (vsnet-campaign-dn 897, 903).


  V1548 Aql		(RA = 19h07m28s.42, Dec = +11d44'45".8)
  
    The slow brightening continues (vsnet-campaign-nova 343, 347).
  The current magnitude is about 13.2mag.


  AL Com		(RA = 12h32m25s.90, Dec = +14d20'42".5)

    The superoutburst is still ongoing (vsnet-campaign-dn 895, 912).
  A temporal dip was observed since June 11 as reported by R. Ishioka 
  (vsnet-campaign-dn 898).  J. Pietz reported recovering from the 
  dip on June 13 (vsnet-campaign-dn 900, 901, vsnet-campaign 974).
  R. Novak also confirmed the dip and recovering and performed 
  successful time-series observations (vsnet-campaign-dn 904, 
  vsnet-campaign 975).

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

    P. Williams reported an outburst of V803 Cen at 13.6mag on 
  June 17 (vsnet-campaign-dn 914).


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

    The observation at Kyoto on June 11 confirms that the outburst 
  since the last week was a genuine superoutburst.  This established 
  that IX Dra is a new member of ER UMa stars (vsnet-campaign 972).
  The superoutburst continued at least until June 12 
  (vsnet-campaign-dn 894, 899, 902).


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

    The object is again brightening to 13.8mag on June 13 
  (vsnet-campaign-dn 910).


*** Future schedule ***

  CV conference 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 ***

  AL Com
    The VSNET page of 2001 outburst has been updated. 
	http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/alcom0105.html
			[vsnet-campaign 973, 979]

   Images and light curves presented by R. Novak
	http://ada.astronomy.cz
	http://codel.astronomy.cz/ada/stars/alcom/alcom.html
			[vsnet-campaign-dn 904]

  IY UMa
    eclipse ephemeris, see [vsnet-campaign-dn 905, 909]

  Period of Be stars
    S. Otero reports his observations of several Be stars and suggested 
    or confirmed their periods; see [vsnet-campaign-be 133, 134].
    (T. Ganded comments; [vsnet-campaign-be 135])


(This summary can be cited.)

Regards,
Makoto Uemura

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