2002IAUC.7987....3B


Query : 2002IAUC.7987....3B

2002IAUC.7987....3B - IAU Circ., 7987, 3 (2002/October-0)

Supernova 2002gd in NGC 7537.

BENETTI S., ALTAVILLA G., PASTORELLO A., RIELLO M., TURATTO M., ZAMPIERI L., CAPPELLARO E., GERMANY L. (The European Research and Training Network on the physics of type-Ia supernovae - ERTN)

Abstract (from CDS):

S. Benetti, G. Altavilla, A. Pastorello, M. Riello, M. Turatto, and L. Zampieri, Osservatorio Astronomico di Padova; E. Cappellaro, Osservatorio Astronomico di Capodimonte; and L. Germany, European Southern Observatory (ESO), on behalf of the European Research and Training Network on the Physics of Type-Ia Supernovae, report that a fully reduced CCD spectrum (range 333-1000 nm, resolution 1.2 nm) of SN 2002gd, obtained on Oct. 8.02 UT with the ESO 3.6-m telescope (+ EFOSC2), shows it to be a type-II supernova caught soon after explosion. The spectrum is dominated by a very blue continuum (T_bb about 13000 K) with overimposed hydrogen Balmer and He I 587.6-nm lines showing P-Cyg profiles. From the minima of the lines, an ejecta expansion velocity of about 5000 km/s is derived. The low velocity and the low intrinsic luminosity at such early phases are reminiscent of the peculiar, low-luminosity type-II supernovae (Zampieri et al. 2002, MNRAS, in press).

Abstract Copyright: ∼

Journal keyword(s):

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 NGC 7537 GiP 23 14 34.5173585112 +04 29 54.054910824   13.8       ~ 220 0
2 SN 2002gd SN* 23 14 37.01 +04 30 06.1     16.7     SNII 63 1

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