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[vsolj-alert 838] VSNET Weekly Campaign Summary



From owner-vsnet-campaign@kusastro.kyoto-u.ac.jp Tue Dec  5 04:21 JST 2000
To: vsnet-campaign
Date: Tue, 05 Dec 2000 04:21:45 +0900
From: Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>
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Subject: [vsnet-campaign 571] VSNET Weekly Campaign Summary
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VSNET Weekly Campaign Summary
 
*** Last week news ***

(new targets)
  IW And		(RA = 01h01m08s.82, Dec = +43d23'27".3)

    T. Kinnunen reported on November 27 that the poorly understood 
  cataclysmic variable IW And was bright at the magnitude of 14.7 
  (vsnet-campaign 562).  C. Kunjaya confirmed the outburst at Gunma Astro. 
  Obsv. on November 29 (14.82mag; vsnet-campaign 563).  He reported on 
  November 30 that, after reduction, the observation did not show time 
  variation larger than 0.02 mag in ~3 hours light curve (vsnet-campaign 567). 


  BF Eri		(RA = 04h39m29s.62, Dec = -04d36'10".0)

    S. Kerr reported an outburst (12.6mag) of BF Eri on November 29 
  (vsnet-outburst 1030).  R. Ishioka (Kyoto team) confirmed the outburst 
  at 12.6mag (vsnet-campaign 564, 568).  The outburst is now fading.  
  The current magnitude is around 13.8 (vsnet-campaign-dn 276).
 
  
  CT Hya		(RA = 08h51m04s.50, Dec = +03d07'43".5)

    As reported by R. Stubbings et al., the SU UMa-type dwarf nova CT Hya is
  undergoing an outburst.  The last superoutburst was observed in 1999
  February, when the VSNET Collaboration team (Kato, Kiyota, Novak and
  Matsumoto) detected superhumps with a period of 0.06643 d.  However,
  some curious O-C behavior (or large change in superhump phase) was noted.
  The outburst is still ongoing, the current magnitude is around 14.3 
  (vsnet-campaign-dn 274, 280).
 

  SN 2000ev		(RA = 06h47m52s.0, Dec = +84d10'02".2) 

    SN 2000ev was discovered by F. Manzini on November 27.10 at mag 16.5
  (IAUC 7529).  The reported position is only the offsets: 4".5 west and
  19" north of the nucleus of the tilted spiral(?) galaxy UGC 3500.  
  The spectroscopy shows that it seems to be of young type IIn.  The expected 
  maximum of normal SN Ia is about mag 15.5 (vsnet-campaign-sn 118).


  SN 2000ex		(RA = 03h42m11s.71, Dec = -27d51'48")

    SN 2000ex was discovered by KAIT team (IAUC 7530).  It has been mag
  17.6-17.8 between Nov. 17.4 - 27.3, and was revealed as of type II 
  (vsnet-campaign-sn 118).
 

  SN 2000ew		(RA = 11h40m58s.52, Dec = +11d27'55".9)

    According to IAUC 7530, T. Puckett and his colleague discovered a
  bright SN (discovery mag 14.9) in the very neighbouring galaxy.  
  The position is about 2" west and 21" south of the center of the nearly 
  face-on spiral (SA(rs)c) galaxy NGC 3810.  NGC 3810 has produced 
  SN Ib 1997dq which was discovered at mag 15.0 after maximum.  
  The recession velocity of this galaxy is about 900km/s, so it can be as 
  near as the Virgo cluster.  If so, the typical SN Ia will reach mag 12 or 
  so at the maximum (vsnet-campaign-sn 119).


  SN 2000ey		(RA = 23h19m25s.20, Dec = +05d54'21".1)

    The KAIT team discovered mag 15 SN Ia in the evening sky. 
  The position is 0".6 east and 1".2 south of the nucleus of the odd shaped 
  spiral? galaxy IC 1481.  The spectroscopy on Nov. 29 has revealed that 
  this SN is normal type Ia around the maximum light.  The recession velocity 
  of the host is 6118 km/s from NED, so the expected maximum is mag 16.2 
  (vsnet-campaign-sn 120).

 
  V1504 Cyg		(RA = 19h28m55s.87, Dec = +43d05'39".9)

    As reported by M. Simonsen, the SU UMa-type dwarf nova V1504 Cyg showed 
  an outburst on November 23 at 14.4mag (vsnet-campaign-dn 257).


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

    M. Simonsen reported a new outburst of V503 Cyg at the magnitude of 14.0 
  on November 25.  C. Kunjaya reported that the observation of V503 Cyg on 
  November 29 at Gunma Astronomocal Observatory shows a clear light variation 
  with amplitude about 0.2 mag and period 116 minutes (vsnet-campaign-dn 263).
  The outburst is still ongoing, and the current magnitude is around 14.2 
  (vsnet-campaign-dn 265).


  V591 Cen		(RA = 12h42m18s.56, Dec = -33d33'44".2)

    As reported by R. Stubbings on December 1, the dwarf nova V591 Cen 
  is undergoing a relatively rare outburst at 14.6mag.  The last outburst 
  was observed in 1999 July (mv=14.3, Stubbings), which slowly faded.
  The outburst still continues.  The current magnitude is around 14.8 
  (vsnet-campaign-dn 277).


  TY PsA		(RA = 22h49m40s.31, Dec = -27d06'54".3)

    R. Stubbings reported an outburst (11.9mag) of TY PsA on December 1 
  (vsnet-outburst 1058).  The outburst is still ongoing.  The current 
  magnitude is around 11.7 (vsnet-campaign-dn 275).


  SN 2000ez		(RA = 11h57m45s.75, Dec = +32d17'49".1)

    M. Armstrong discovered a supernova (mag 16.8) on November 24.  
  To date, magnitudes of 16.9C and 17.5R were reported (vsnet-campaign-sn 122).

 
  SN 2000fa		(RA = 07h15m29s.88, Dec = +23d25'42".4)

    The KAIT team discovered a supernova (mag about 17.5) on November 30.  
  The position written on IAUC 7533 seems to be that of the foreground star.
  The correct position (written above) is 6".6 east and 4".2 north of the 
  nucleus of UGC 3770 (vsnet-campaign-sn 122).


(continuous targets)
  CI Aql		(RA = 18h52m03.6s, Dec = -01d28m38.9s)

    As reported in IAUC 7528 (K. Matsumoto and T. Kato), the recurrent 
  nova CI Aql has apparently entered the final rapid-decline stage 
  (vsnet-campaign-nova 93).  The current magnitude seems to be fainter 
  than 14.2 (vsnet-campaign-nova 93).

 
  EK TrA		(RA = 15h14m00s.19, Dec = -65d06'17".1)

    The SU UMa-type dwarf nova EK TrA started fading from the superoutburst.  
  The magnitudes of 13.4: and 13.6 were reported by P. Nelson and 
  R. Stubbings, respectively on November 27 (vsnet-campaign-dn 256).


  OJ 287		(RA = 08h51m57s, Dec = 20d17'59")

    The bright state continues.  The current magnitude is around 14.5 
  (vsnet-campaign-blazar 101, 102, 105).


  SN 2000el		(RA = 22h28m26s.62, Dec = +17d08'51".2)

    SN 2000el was independently discovered by KAIT team, and it was revealed 
  that this SN was first detected on October 23.1 and is of normal type II.  
  The photometry is quite difficult because it is very close to the nucleus 
  of the host galaxy (vsnet-campaign-sn 118).


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

    The outburst continues.  The current magnitude is around 13.7 
  (vsnet-campaign-dn 267).  The observation by A. Pearce showed 14.2mag 
  on December 3, which indicates possibly fading (vsnet-campaign-dn 278).


  SN 2000er		(RA = 02h24m32s.54, Dec = -58d26'18".0)

    SN 2000er was observed as mag 15.4CR on November 28 
  (vsnet-campaign-sn 118).

 
  OY Car		(RA = 10h06m22s.46, Dec = -70d14'04".4)

    The eclipsing SU UMa-type dwarf nova OY Car rose to full maximum.
  The last superoutburst occurred in 2000 February (vsnet-campaign-dn 255).
  The superoutburst is still ongoing and the current magnitude is around 
  12.6 (vsnet-campaign-dn 266, 269, 272, 279).


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

    The striking activity still continues (vsnet-campaign-blazar 100).
  During the last week, a slightly fainter magnitude (14.5mag) was reported 
  by G. Poyner (vsnet-campaign-blazar 103).  The observation by M. Verdenet 
  showed 13.4mag on December 3, which may indicate brightening again 
  (vsnet-campaign-blazar 104).


*** General information ***

  SN 2000eo
    Sequence reported by K. Krisciunas (vsnet-campaign-sn 121), see
	http://vsnet.astro.washington.edu/kevin/apo.html

  OY Car
    Eclipse ephemeris, see [vsnet-campaign-dn 270]

  V347 Pup
    Eclipse ephemeris, see [vsnet-campaign 570]

  SN 2000er
    Corrigendum:
	In [vsnet-alert 5389] and [vsnet-campaign-sn 113],
	"According to IAUC 9132" should be read "According to IAUC 7528".
				[vsnet-campaign-sn 116]

  SN 2000el
    Corrigendum:
	In [vsnet-campaign-sn 111], [vsnet-campaign 561], and 
	[vsnet-campaign-news 30],
	the discoverer of SN 2000el should be read "T. Puckett".
				[vsnet-campaign-sn 117], [vsnet-campaign 565]

  
(This summary is reproduction free.)

Regards,
Makoto Uemura

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