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SN 1998A: Explosion of a Blue Supergiant
A. Pastorello, E. Baron, D. Branch +11
We present spectroscopic and photometric observations of the peculiar Type II supernova (SN) 1998A. The light curves and spectra closely resemble those of SN 1987A, suggesting that…
Optical observations of the black hole candidate XTE J1550-564 during the Sep/Oct 1998 outburst
C. Sanchez-Fernandez, A. J. Castro-Tirado, H. W. Duerbeck +11
We report here optical observations during the September/October 1998 outburst of the black hole candidate XTE J1550-564. CCD photometry was obtained for the optical counterpart wi…
A new faint Type Ia Supernova: SN 1997cn in NGC 5490
M. Turatto, A. Piemonte, S. Benetti +4
Observations of the recent SN 1991bg in the elliptical galaxy NGC 5490 show that this objects closely resembles, both photometrically and spectroscopically, the faint SNIa 1991bg.…
The Peculiar Type II Supernova 1997 D: A Case for a Very Low 56Ni Mass
M. Turatto, P. A. Mazzali, T. R. Young +14
SN 1997D in NGC 1536 is possibly the least luminous and energetic Type II supernova discovered to date. The entire light curve is subluminous, never reaching . The ra…