Meth99ex
La SN1999ex dans IC 5179
Tableau des
mesures et Courbes
de Lumière
Extrait de l'IAUC 7310
SUPERNOVA 1999ex IN IC 5179
R. Martin, A. Williams, and S. Woodings, Perth Observatory, report the
discovery of a second supernova in IC 5179 (cf. IAUC
7272, SN 1999ee), found in an image taken on Nov. 9.51 UT in the course of the
PARG Automated Supernova Search. Images obtained on
Nov. 10.52 and 14 show that the object is slowly brightening. SN 1999ex is not
visible in a deep exposure taken on Oct. 25.58
(estimated limiting mag 19). Position for SN 1999ex from three unfiltered CCD
images on Nov. 10.53 with the Perth 0.25-m Mike
Candy Telescope by J. Biggs and A. Verveer: R.A. = 22h16m07s.27 +/- 0s.02,
Decl. = -36o50'53".7 +/- 0".3 (equinox 2000; mag about
18.5 +/- 1.0).
M. Hamuy, University of Arizona; and M. M. Phillips, Carnegie Observatories,
report that a spectrum (range 350-1000 nm,
resolution 0.3 nm) of SN 1999ex, taken on Nov. 14.13 UT with the New Technology
Telescope at the European Southern Observatory
(ESO), shows close resemblance to that of the type-Ic SN 1994I taken on 1994
Apr. 12 (3 days after V maximum; Filippenko et al.
1995, Ap.J. 450, L11). UBV images taken with the Cerro Tololo 0.91-m telescope
by L. Gonzalez, E. Rubenstein, P. Candia, and L.
Strolger between Nov. 6 and 14 confirm the presence of SN 1999ex and reveal
that maximum light occurred in all three bands on Nov.
13 at B = 17.3 and V = 16.6 (+/-0.1).
Voir la carte de champ de
IC 5179, ou se trouve, également, la SN1999ee.
Le suivi en images de la SN1999ex
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S99exCH1 991123.456 R CHASSAGNE |
S99exPA1 991204.711 Th PAYET |
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