[vsnet-campaign 1258] VSNET Weekly Campaign Summary

[Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>]

VSNET Weekly Campaign Summary

*** Last week news ***

(new targets)
  HT Cam		(RA = 07h57m01s.2 Dec = +63d06'00")

    H. Itoh reported on December 29 that HT Cam (a ultra 
  short-period CV; also renowned for its infrequent very brief 
  outbursts) experienced an unprecedentedly bright outburst 
  reaching 12.2mag (vsnet-campaign 1250, 1251, vsnet-campaign-dn 
  2006).  J. Kemp confirmed the outburst at 13.1mag on 
  December 30 (vsnet-campaign-dn 2008).  As also indicated by 
  this obesrvation, A. Oksanen reported a rapid decline in late 
  December 30 (vsnet-campaign 1256, vsnet-campaign-ip 67,  68
  vsnet-campaign-dn 2009,2010).  T. Kato reported strong modulations 
  on the decline trend (vsnet-campaign-dn 2011, vsnet-campaign-ip 69).
  There are 0.063 d periodicity which is longer than the reported 
  orbital period and ~8 min period which is close to the quiescence 
  periodicity.  These modulations have the other possibility to be 
  interpreted by QPOs (vsnet-campaign-ip 70, 71, vsnet-campaign-dn 
  2013, 2014).  The object almose returned to quiescence level 
  (vsnet-campaign-ip 72, vsnet-campaign-dn 2015). 
    

  SN 2001iq		(RA = 22h25m10s.42, Dec = +42d43'04".2)

    SN 2001iq is located on a faint galaxy LEDA 214831, which is 
  near from (and possibly interacting with) UGC 12032 .  If the 
  host galaxy is same distance as UGC 12032, the expected maximum 
  for a typical SN Ia is mag about 16.4 (vsnet-campaign-sn 303).


  SN 2001ir		(RA = 08h36m28s.12, Dec = -11d50'03".5)

    SN 2001ir appeared in MCG -02-22-22, in which the expected
  maximum for a typical SN Ia is mag about 16.3 
  (vsnet-campaign-sn 303).


  SN 2001is		(RA = 05h42m09s.07, Dec = +69d21'54".8)

    NGC 1961 = the host galaxy of SN 2001is also produced SN Ia
  1998eb. The recession velocity of NGC 1961 is 3934 km/s, from 
  which the expected maximum for SN Ia is mag about 15.6 
  (vsnet-campaign-sn 304).


  SN 2001it		(RA = 15h06m09s.40, Dec = +53d24'41".6)

    MCG +09-25-15 = the host galaxy of SN 2001it is rather distant,
  whose expected maximum if it is of type Ia is mag about 17.4 
  (vsnet-campaign-sn 304).


  RZ LMi		(RA = 09h51m50s.10, Dec = +34d07'29".8)

    On December 28, T. Krajci reported that the object faded 1.5 mag 
  since last imaged 3 days ago (vsnet-campaign-dn 2004).


  V644 Cen		(RA = 11h43m06s.5, Dec = -60d44'02")

    T. Kato reported a long-period EB candidate, V644 Cen.  
  This object was formerly considered as a ultra long-period 
  (>200 yr?) eclipsing binary (vsnet-campaign 1245).


  V381 Sco		(RA = 17h47m03s.3, Dec = -35d47'07") 

    T. Kato reported a long-period EB candidate, V381 Sco.
  This object was considered as a long-period (P=6545 d) eclipsing 
  binary.  The star is detected as a MSX5C source, and has a 
  moderate IR excess.  Some of the literature gave a classification 
  of an OH/IR object (vsnet-campaign 1246).


  V383 Sco              (RA = 17h53m34s.3, Dec = -38d05'00")

    T. Kato reported a long-period EB candidate, V383 Sco.  
  The period was considered to be 4900 days (vsnet-campaign 1247).


  V532 Oph		(RA = 17h32m42s.6, Dec = -21d51'40")

    T. Kato reported a long-period EB candidate, V532 Oph.  
  The period was considered to be over 6000 days 
  (vsnet-campaign 1248).


  OW Gem		(RA = 06h31m41s.78, Dec = +17d04'56".0)

    A primary eclipse of the long-period eclipsing binary 
  OW Gem is predicted to occur in early January.  The observing 
  campaign is undertaken by several variable star organizations 
  (vsnet-campaign-ecl 1).  The fading seems to be started on 
   December 30 when the object faded to 8.8mag 
  (vsnet-campaign-ecl 3).


  RZ Cas		(RA = 02h48m55s.5, Dec = +69d38'03")

    P. Ferenc reported a flare with its duration over 1500s and 
  amplitude over 0.6mag (vsnet-campaign-ecl 4).


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

    The object is still at very faint state (<14.5mag) 
  (vsnet-campaign-nova 665).

 
  1RXS J232953.9+062814 (RA = 23h29m54s.3, Dec = +06d28'10".9)

    M. Uemura reported an outburst at 14.3mag of this ultrashort 
  period SU UMa star on December 26 (vsnet-campaign 1242).
  The object was then rapidly rising from 14.0mag to 13.4mag 
  (vsnet-campaign 1243).  Follow-up observations by T. Krajci and 
  S. Kiyota revealed the object passed a maximum between Decemer 
  26.5 and 27 (UT) and began rapid fading.  Some hints of short-term 
  modulations possibly appeared (vsnet-campaign 1244).
  The fading continued through December 27 (vsnet-campaign-dn 2001, 
  2002, 2003).
 

  SU Tau		(RA = 05h49m03s.7, Dec = +19d04'21")

    The object seems to be near maximum at 9th mag 
  (vsnet-campaign-rcb 7).

  
  DY Per		(RA = 02h35m17s.12, Dec = +56d08'44".7)

    DY Per is further fading slowly (vsnet-campaign-rcb 6).
 

  V407 Cyg		(RA = 21h02m09s.87, Dec = +45d46'32".5)

    The intermediate state still continues (vsnet-campaign-symbio 2).


  SN 2001ig		(RA = 22h57m30s.69, Dec = -41d02'25".9)

    SN 2001ig goes quite bright (now mag 13).  Its spectrum (on Dec.
  16.1) resembles to SN IIb 1993J but much bluer and more rapidly
  expanding (vsnet-campaign-sn 303).


  V1028 Cyg		(RA = 20h00m52.13s, Dec = +56d56'22.3")

    The superoutburst entered a rapid decline phase 
  (vsnet-campaign-dn 2012).


   V1413 Aql		(RA = 19h03m46s.84, Dec = +16d26'17".1)

    An eclipse will occur soon.  It has remained calm 
  (vsnet-campaign-symbio 3).


  V1039 Cen		(RA = 13h55m41s.27, Dec = -64d15'57".9)

    The object is still fainter than 12.1mag (vsnet-campaign-nova
  664).


  MisV1147		(RA = 22h54m03s.78, Dec = +58d54'02".1)

    MisV1147 = HBHA 65-53 is also found on Nobuo Ohkura's new 
  images taken on 2001 Sept. 17. To be surprised, it was fainter 
  than 14 mag in 2001 September. Then it brightened rapidly to  
  12.5 mag within two weeks, and it keeps slow brightening since 
  2001 October (vsnet-campaign-unknown 4).

 
*** Future schedule ***


  International Conference on Classical Nova Explosions
	 Sitges (Barcelona), Spain: 20-24 May 2002
    For more detailed information, see http://vsnet.ieec.fcr.es/novaconf
					[vsnet-campaign-nova 643]
					[vsnet-campaign-nova 666]

  Blazar meeting at Tuorla: June 17-21, 2002
	for more information, see http://vsnet.astro.utu.fi/blazar02
					[vsnet-campaign-blazar 232]

  International workshop 
	"XEUS - studying the evolution of the hot universe"
	March 11-13, 2002 ; MPE Garching, Germany
	for more information, see 
	http://wave.xray.mpe.mpg.de/conferences/xeus-workshop
					[vsnet-campaign-xray 98]


*** General information ***

  HT Cam
    sequence presented by B. Skiff, see [vsnet-campaign 1252], 
    (also see [vsnet-campaign-dn 2007], [vsnet-campaign 1254])

    finding chart provided by Tovmassian:
      http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/CVs/RXJ0757/rxj0757p63_fchart.jpg
					[vsnet-campaign 1253]
    photometry by G. Billings:
      http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/CVs/RXJ0757/HTCam_29.gif
					[vsnet-campaign 1257]
    pulse light curve:
	http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/CVs/RXK0757/pulse.gif
					[vsnet-campaign-dn 2014]

  V644 Cen
    sequence presented by M. Morel, see [vsnet-campaign-be 149],
					[vsnet-campaign-ecl 2]


  VSNET 2001
    http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Summary/vsnet2001/vsnet2001.html
					[vsnet-campaign 1255]


(This summary can be cited.)	

Regards,
Makoto Uemura

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