Meth99ee
La Supernova 1999ee dans IC 5179
Tableau de Mesures et Courbes de
lumière
Extrait de la circulaire IAUC 7272
SUPERNOVA 1999ee IN IC 5179 :
J. Maza, University of Chile; and M. Hamuy, University of Arizona, report the
discovery by M. Wischnjewsky, on a 20-min
unfiltered T-Max 400 film taken by L. Gonzalez on Oct. 7.15 UT with the
University of Chile's Maksutov telescope, of a supernova (m_pv
about 17.5) located at R.A. = 22h16m09s.40, Decl. = -36o50'31".5 (equinox
2000.0), which is about 10" east and 10" south of the
nucleus of IC 5179. The supernova was confirmed by P. Candia from B,V,I images
taken with the Cerro Tololo 0.9-m telescope on Oct.
8.12. Maza obtained a spectrum (range 320-800 nm; resolution 0.4 nm) of SN
1999ee on Oct. 9.10 using the 4-m Blanco telescope at
Cerro Tololo, which reveals that the supernova is a type-Ia event with the
characteristic Si II 635.5-nm line having an expansion
velocity of 15 700 km/s. The spectrum has a blue continuum, indicating the
supernova to be several days before maximum. Hamuy
and C. Lidman obtained a spectrum (range 1000-2200 nm; resolution about 500,
S/N about 7) on Oct. 9.10, at the European Southern
Observatory with the Very Large Telescope (+ ISAAC), which shows a featureless
continuum. At the redshift of the host galaxy (3447
km/s), a type-Ia supernova could reach a peak V magnitude near =14.5.
Voir la carte de champ de la SN1999ee dans IC 5179
Le suivi en images de la SN1999ee
dans IC 5179
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991010.364 R SANTALLO |
991010.428 JC PELLE |
991010.458 JC PELLE |
991115 R CHASSAGNE |
