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[vsnet-campaign 531] VSNET Weekly Campaign Summary

VSNET Weekly Campaign Summary
 
*** Last week news ***

(new targets)
  SN 2000dr		(RA = 01h01m44s.04, Dec = -15d34'09".1)

    H. Yamaoka forwarded the contents of IAUC 7505 which tells the KAIT 
  discovery of the supernova 2000dr on October 5.3 at about 18.1mag. 
  The position is about 21" east and 5" south of the nucleus of the 
  lenticular ((R')SAB0+) galaxy IC 1610.  The spectrum shows that 
  it is a type Ia supernova and typical SNeIa on this distance 
  (v_r = 5635 km/s) will be about mag 16.0 at their maximum.  
  CTIO team has observed this SN and the information is loaded at:
  http://vsnet.ctio.noao.edu/~nick/sn/sn2000dr/sn2000dr.html.  The color
  image shows that SN 2000dr at Oct. 7/8 is extremely blue, which
  indicates that it is a quite young object (vsnet-campaign-sn 101).
    The follow-up observation of this somewhat peculiar SN Ia is highly urged.


  SN 2000ds		(RA = 09h11m36s.24, Dec = +60d01'42".2)

    H. Yamaoka wrote in [vsnet-campaign-sn 102] that T. Puckett and his 
  colleague has discovered a new faint SN 2000ds in NGC 2768.  Its position 
  is about 9" west and 32" south of the center of this elliptical or 
  lenticular galaxy.  The magnitude at the time of its discovery is 17.9 
  on October 10.40.  Such an early type galaxy as NGC 2768 are thought to 
  produce only SNeIa.  The recession velocity of NGC 2768 is 1373 km/s, 
  so the expected maximum of typical SNeIa is about mag 13.  Almost the same
  brightness in 2 days suggest that it is not a young SN Ia.  And, typical 
  SNeIa 140 days after maximum is about 3-4 mag dimmer than at maximum.
    The spectroscopic observation is needed for further discussion, and the 
  follow-up magnitude estimates are also useful.  Needless to say, the check 
  on the pre-discovery image is quite recommended. 


  Delta Vel		(RA = 08h44m42s.1, Dec = -54d42'30")

    S. Otero reported the presence of eclipses of Delta Vel.  Since 1997 he 
  has recorded three probable eclipses at 2.2mag instead of its normal 1.95, 
  estimating the candidates of its period to be 67.7d or 5.88854d, and then, 
  confirmed the fourth eclipse in JD 2451714.9375 (vsnet-alert 5310).
 
  
(continuous targets)
  ES Dra		(RA = 15h25m32s.26, Dec = +62d00'56".9)

    J. Pietz performed CCD time-series photometry on October 7.79 - 7.86. 
  The analysis revealed no variations above 0.05mag (vsnet-campaign 529).
  13.8mag was reported on October 8 by T. Kinnunen and E. Muyllaert 
  (vsnet-campaign-dn 191).


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

    M. Uemura reported the observation on October 9, which yields 
  the magnitude of 15.07 and no periodic modulation during the 2-hour run 
  (vsnet-campaign-dn 196).


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

    M. Uemura reported a deep eclipse (depth ~ 2mag) and no clear hump 
  from the observation on October 9 (vsnet-campaign 530).  He also 
  reported a possible small hump which can be seen in the light curve 
  observed on October 10 (vsnet-campaign-dn 197) and the object entered 
  a rapid decline phase from October 10 - 11 (vsnet-campaign-dn 198).
  M. Uemura reported the magnitude on October 13.7 to be 16.75 
  (vsnet-campaign-dn 199).


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

    B. Fraser reported his observations on October 12 and 15;V = 1.88: 
  and 1.91, respectively (vsnet-campaign-be 70).


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

    The bright state continues and the current magnitude is about 12.3 
  (vsnet-campaign-blazer 81).


  SY Vol		(RA = 08h53m28s.9, Dec = -71d12'29".9)

    The fading from the outburst was observed on October 8 by R. Stubbings 
  (<14.4; vsnet-campaign-dn 194).

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

    CCD time-series photometry by S. Koyota on September 4, 20 and October 10 
  was reported in [vsnet-campaign-data 46].


  4U 2206+554

    T. Watanabe's observation shows the magnitude of this Be-X-ray binary 
  to be 10.5 on October 11 (vsnet-campaign-xray 57, vsnet-campaign-be 69).
 

*** General information ***

  Delta Vel

    eclipse ephemeris presented by S. Otero, see [vsnet-alert 5319]
    light curve observed by S. Otero, see [vsnet-alert 5310]

  We have set up a new list, vsnet-campaign-deltavel. The new list 
  "vsnet-campaign-deltavel" is totally devoted to dedicated observing 
  campaign of Delta Vel.


(This summary is reproduction free.)

Regards,
Makoto Uemura

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