[vsolj-alert 880] VSNET Weekly Campaign Summary

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

From owner-vsnet-campaign@kusastro.kyoto-u.ac.jp Tue May 15 02:36 JST 2001
To: vsnet-campaign
Date: Tue, 15 May 2001 02:36:16 +0900
From: Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>
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Subject: [vsnet-campaign 897] VSNET Weekly Campaign Summary
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VSNET Weekly Campaign Summary
 
*** Last week news ***

(new targets) 
  SN 2001bg		(RA = 08h35m18s.86, Dec = +28d28'05".8)

    SN 2001bg was discovered on May 8 when it was mag about 14.  The
  next day it was confirmed at the nearly same magnitude.  The reported
  position is 22" east and 19" south of the center of the barred-spiral 
  galaxy NGC 2608.  NGC 2608 is somewhat nearby galaxy.  Its recession 
  velocity is about 2100 km/s.  de Vaucouleurs and Peters (1984 ApJ, 287, 1) 
  lists this galaxy as m-M = 31.24, nearly the same as the Virgo cluster.  
  And, this galaxy produced another SN 1920A, which was observed as mag 
  about 12.0.  This magnitude is slightly brighter than the typical SN Ia
  maximum in the Virgo cluster (vsnet-campaign-sn 179).   H. Kawakita, 
  K. Kinugasa, and H. Yamaoka reported to CBAT that they performed 
  spectroscopy at Gunma observatory and showed this SN is of type Ia 
  near the maximum (vsnet-campaign-sn 180, 181, 182).  


  SN 2001bf		(RA = 18h01m33s.99, Dec = +26d15'02".3)

    G. M. Hurst discovered a new SN, SN 2001bf.  The object is 
  brightening form 16.5C on May 3 to 15.1R on May 9 (vsnet-campaign-sn 183).
  H. Kawakita, K. Kinugasa, and H. Yamaoka performed spectroscopy and 
  reported that it is of type Ia shortly before maximum light 
  (vsnet-campaign-sn 183, 185).


  Z Cha			(RA = 08h07m16s.29, Dec = -76d32'20".9)

    An outburst of the eclipsing SU UMa-type dwarf nova, Z Cha was 
  reported on May 13 by R. Stubbings.  The magnitude of 13.4mag 
  indicates it is a normal one (vsnet-campaign-dn 771).


  EC10578-2935		(RA = 10h57m53s.7, Dec = -29d35'52")

    B. Monard reported the object is 15.4mag on May 12, which indicates 
  a possible outburst (vsnet-campaign-dn 777).

 
  CH UMa		(RA = 10h07m00s.90, Dec = +67d32'45".0)

    The outburst on the end of April has already finished, but 
  reported observations during the last week show that the object 
  is still somewhat active (vsnet-campaign-dn 762).


(continuous targets) 
  BZ UMa		(RA = 08h53m44s.3, Dec = +57d48'40".1)

    The magnitude almost returned to that of quiescence 
  (vsnet-campaign-dn 763).

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

    The oscillation continues (vsnet-campaign-dn 765, 767, 775).


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

    The object is still active (vsnet-campaign-blazar 194, 195).


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

    The object has faded from the outburst since May 7, and then, 
  again brightened and reached 13.5mag on May 13 (vsnet-campaign-dn 764, 773).
 

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

    The object was slowly brightening until around May 12 when it 
  again started fading (vsnet-campaign-nova 295, 297, 298).


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

    S. Otero reported that after ten days plateau, the object again 
  start gradual brightening (vsnet-campaign-be 124).  The bright 
  state continues now (vsnet-campaign-be 125, 126).


  U Gem                 (RA = 07h55m05s.55, Dec = +22d00'09".2)

    The fading from the outburst is ongoing (vsnet-campaign-dn 760, 761, 768).


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

    An outburst of R~16.8 was reported by R. Ishioka on May 11 
  (vsnet-campaign-dn 766).


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

    Reported observations during the last week imply it becomes 
  brighter again (vsnet-campaign-blazar 196).


  V4643 Sgr		(RA = 17h54m40s.43, Dec = -26d14'15".7)

    Recent observations tell the nova stopped its rapid decline and 
  remain at V=14.3 (vsnet-campaign-nova 296).


  DI UMa		(RA = 09h12m22s.16, Dec = +50d49'39".1)

    M. Uemura reported that DI UMa was re-brightening to 15.6mag 
  on May 12 (vsnet-campaign-dn 769).  The time-series observation 
  taken by R. Ishioka on May 12 shows no periodic modulations, and 
  a rapid fading from the outburst was observed on May 13 
  (vsnet-campaign-dn 770).


  RX J1155.4-5641       (RA = 11h55m27.6s, Dec = -56d41'48")

    Another outburst was reported on May 13 by R. Stubbings (13.9mag 
  on 13.403 UT) and A. Pearce (13.2mag on 13.546 UT) (vsnet-campaign-dn 774).
  B. Monard's observation shows the object rapidly faded to 14.2mag 
  on May 13.692 (vsnet-campaign-dn 776).


*** Future schedule ***

  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 ***

  SN 2001bg
    Comparison stars table presented by B. Skiff, see [vsnet-campaign-sn 184]

  Z Cha
    eclipse ephemeris, see [vsnet-campaign-dn 772]


(This summary can be cited.)

Regards,
Makoto Uemura

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