SIMBAD references

2012MNRAS.422.1122I - Mon. Not. R. Astron. Soc., 422, 1122-1139 (2012/May-2)

The bright type IIP SN 2009bw, showing signs of interaction.

INSERRA C., TURATTO M., PASTORELLO A., PUMO M.L., BARON E., BENETTI S., CAPPELLARO E., TAUBENBERGER S., BUFANO F., ELIAS-ROSA N., ZAMPIERI L., HARUTYUNYAN A., MOSKVITIN A.S., NISSINEN M., STANISHEV V., TSVETKOV D.Y., HENTUNEN V.P., KOMAROVA V.N., PAVLYUK N.N., SOKOLOV V.V. and SOKOLOVA T.N.

Abstract (from CDS):

We present photometry and spectroscopy of the Type IIP supernova (SN IIP) 2009bw in UGC 2890 from a few days after the outburst to 241 d. The light curve of SN 2009bw during the photospheric phase is similar to that of normal SNe IIP but with a brighter peak and plateau ({img} mag, {img} mag). The luminosity drop from the photospheric to the nebular phase is one of the fastest ever observed, ∼ 2.2 mag in about 13 d. The radioactive tail of the bolometric light curve indicates that the amount of ejected 56Ni is ≈ 0.022 M. The photospheric spectra reveal high-velocity lines of Hα and Hβ until about 105 d after the shock breakout, suggesting a possible early interaction between the SN ejecta and pre-existent circumstellar material, and the presence of CNO elements. By modelling the bolometric light curve, ejecta expansion velocity and photospheric temperature, we estimate a total ejected mass of ∼ 8-12 M, a kinetic energy of ∼ 0.3 foe and an initial radius of ∼ 3.6-7 {x} 1013 cm.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): supernovae: general - supernovae: individual: SN 2009bw - galaxies: individual: UGC 2890

CDS comments: T.1 + fig.1, stars 1-18 are 2MASS, except numbers 11, 13, 14, and 15 which have the ID USNO-B1.0

Simbad objects: 42

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