SIMBAD references

2011MNRAS.411.2726B - Mon. Not. R. Astron. Soc., 411, 2726-2738 (2011/March-2)

The type Ib SN 1999dn: one year of photometric and spectroscopic monitoring.

BENETTI S., TURATTO M., VALENTI S., PASTORELLO A., CAPPELLARO E., BOTTICELLA M.T., BUFANO F., GHINASSI F., HARUTYUNYAN A., INSERRA C., MAGAZZU A., PATAT F., PUMO M.L. and TAUBENBERGER S.

Abstract (from CDS):

Extensive optical and near-infrared observations of the Type Ib supernova (SNIb) 1999dn are presented, covering the first year after explosion. These new data turn this object, already considered a prototypical SNIb, into one of the best observed objects of its class. The light curve of SN 1999dn is mostly similar in shape to that of other SNeIb but with a moderately faint peak (MV=-17.2 mag). From the bolometric light curve and ejecta expansion velocities, we estimate that about 0.11 M of 56Ni were produced during the explosion and that the total ejecta mass was 4-6 Mwith a kinetic energy of at least 5 {x} 1051 erg. The spectra of SN 1999dn at various epochs are similar to those of other stripped envelope SNe showing clear presence of H at early epochs. The high explosion energy and ejected mass, along with the small flux ratio [Ca II]/[O I] measured in the nebular spectrum, together with the lack of signatures of dust formation and the moderate metallicity environment is not inconsistent with a single massive progenitor (MZAMS≥ 23-25 M) for SN 1999dn.

Based on observations collected at the European Organisation for Astronomical Research in the Southern hemisphere, Chile [European Southern Observatory (ESO) programmes 64.H-0604 and 65.H-0292], at the Italian 3.58-m Telescopio Nazionale Galileo and the William Herschel Telescope (WHT; La Palma, Spain), and at the Copernico telescope (Asiago, Italy).


Abstract Copyright: 2010 The Authors Monthly Notices of the Royal Astronomical Society2010 RAS

Journal keyword(s): supernovae: general - supernovae: individual: 1999dn

CDS comments: T.1 +fig.1 : Stars 1-9 are respectively 1: 2MASS J23361158+0208385, 2: 2MASS J23360474+0209338, 3: 2MASS J23361818+0210012, 4: 2MASS J23361104+0207353, 5: 2MASS J23361011+0210114, 6: 2MASS J23360827+0210581, 7: 2MASS J23360525+0210393, 8: 2MASS J23361581+0207333, 9: 2MASS J23360818+0209303

Simbad objects: 35

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2021.05.14-13:09:37

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