Nova Cru 2003

Subject: Possible Nova in Crux

According to IAUC 8184, V. Tabur disvcovered a possible nova of mag 10.2 (CCD) at R.A. = 12h23m16s.2, Decl. = -60o22'34" (J2000.0, uncertainty 4") on Aug. 20.486. On Aug. 21.5, Tabor reported that it had brightened about 1 mag. Berto Monard had confirmed the brightening, 9.2C on Aug. 21.71.

Sincerely Yours,
Hitoshi Yamaoka, Kyushu Univ., Japan
yamaoka@rc.kyushu-u.ac.jp

Dear all,

I have prepared a chart for the new nova (with ASAS-3 data) available at: http://ar.geocities.com/varsao/Carta_DZ_Cru.htm

Note that ST Crucis position is slightly off in the GCVS. ST Cru is CPD-59 4219 at 12h25m45.74s -600'00.2" (2000.0) (UCAC-1) This mira has a very large amplitude. Only a couple of cycles recorded by ASAS-3 show it varying between 8.1 and 14.4 (V). The GCVS period of 440 might be right. Some more years of continuous observations are needed.

Regards,
Sebastian.

Subject: Peculiar Variable in Crux = Possible Nova in Crux

IAUC 8185 informed two spectroscopy of "possible nova in crux" (IAUC 8184, vsnet-alert 7827). The Cerro Tololo spectrum shows weak H_beta emission with P-Cyg profile, from which the reporter H. E. Bond suggest that it would be a classical nova before the maximum. The other reporter M. Della Valle et al., however, commented a lack of the typical signatures of classical novae. They suggest that it would be a flare up of post-AGB star, like V4332 Sgr, or V838 Mon. Further photometries, spectroscopies are defenitely urged.

Sincerely Yours,
Hitoshi Yamaoka, Kyushu Univ., Japan
yamaoka@rc.kyushu-u.ac.jp

Visual observation of possible nova in Crux.

CRUnova2003 030822.399 103 Stu.RASNZ

Regards,
Rod Stubbings

NovaCru 20030822.700 92CR MLF

(vsnet-campaign-nova 1363)

Date: Sat, 23 Aug 2003 12:16:12 -0400
From: "W.Liller" 
Subject: Tabur's star

I have these observations* of Tabur's star to report:

Aug 22.0085 = 'JD 2873.5085     V = 9.91 +/- 0.02
Aug 22.0087 = 'JD 2873.5087     B = 11.16 +/- 0.05

Aug 22.996 = 'JD 2874.496               R = 9.3 +/- 0.1 based on two red
photographs.

No emission lines could be detected on a weakly exposed objective prism spectrum taken in the red on August 22.0181.

All the best, Bill Liller

*Comparison stars: GSC 8975 - 581, -725, -859, -979, -1385, and -1567.

Rapid fading

(vsnet-campaign-nova 1492)

Nova Cru 2003: data up to now

  (Rapid fading in early September)

  YYYYMMDD(UT)   mag  observer
  20030822.008  11.16B  (William Liller)
  20030822.008  9.91V  (William Liller)
  20030822.399   103  (Rod Stubbings)
  20030822.492   102  (Andrew Pearce)
  20030822.905   103  (Raquel Yumi Shida)
  20030822.951   109  (Alexandre Amorim)
  20030822.965   101  (Juan Hodar)
  20030822.996   93R  (William Liller)
  20030823.908   102  (Alexandre Amorim)
  20030823.940    98  (Raquel Yumi Shida)
  20030823.947   101  (Juan Hodar)
  20030824.947   100  (Juan Hodar)
  20030824.951   100  (Juan Hodar)
  20030824.981    98  (Sebastian Otero)
  20030825.392   106  (Rod Stubbings)
  20030825.542   103  (Andrew Pearce)
  20030826.005   104  (Alexandre Amorim)
  20030826.458   105  (Rod Stubbings)
  20030826.510   105  (Andrew Pearce)
  20030826.938   104  (Juan Hodar)
  20030826.941   104  (Juan Hodar)
  20030827.403   104  (Rod Stubbings)
  20030830.412   106  (Rod Stubbings)
  20030831.467   109  (Andrew Pearce)
  20030901.550   110  (Andrew Pearce)
  20030901.975   114  (Sebastian Otero)
  20030902.517   116  (Andrew Pearce)
  20030902.948   113  (Alexandre Amorim)
  20030902.989   118  (Sebastian Otero)
  20030904.426   126  (Rod Stubbings)
  20030918.953  <121  (Alexandre Amorim)

Chart by Sebastian Otero

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