The bright Type IIP SN 2009bw, showing signs of interaction

Abstract

We present photometry and spectroscopy of the type IIP supernova 2009bw in UGC 2890 from few days after the outburst to 241 days. The light curve of SN 2009bw during the photospheric phase is similar to that of normal SNe IIP but with brighter peak and plateau (Mmax R = -17.82 mag, Mplateau R = -17.37 mag). The luminosity drop from the photospheric to the nebular phase is one of the fastest ever observed, ~2.2 mag in about 13 days. The radioactive tail of the bolometric light curve indicates that the amount of ejected 56 Ni is \approx 0.022 M\odot. The photospheric spectra reveal high velocity lines of Hα and Hβ until about 105 days 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 modeling the bolometric light curve, ejecta expansion velocity and photospheric temperature, we estimate a total ejected mass of 8-12M\odot, a kinetic energy of ~0.3 foe and an initial radius of ~ 3.6 - 7 \times 10^13 cm.

Accepted for publication in MNRAS, 19 pages, 13 figures, 9 tables

References in corpus (8)

• The death of massive stars - I. Observational constraints on the progenitors of type II-P supernovae
• SN 2005cs in M51 II. Complete Evolution in the Optical and the Near-Infrared
• ESC Supernova spectroscopy of non-ESC targets
• SN 2006bp: Probing the Shock Breakout of a Type II-P Supernova
• Low-Resolution Sodium D Absorption is a Bad Proxy for Extinction
• The Type IIP SN 2007od in UGC 12846: from a bright maximum to dust formation in the nebular phase
• SN 2009E: a faint clone of SN 1987A
• Radiation-hydrodynamical modelling of Core-Collapse Supernovae: light curves and the evolution of photospheric velocity and temperature

Cited by in corpus (60)

• An Open Catalog for Supernova Data
• The diversity of Type II supernova versus the similarity in their progenitors
• The progenitor mass of the Type IIP supernova SN 2004et from late-time spectral modeling
• The first month of evolution of the slow rising type II-P SN 2013ej in M74
• Underluminous Type II Plateau Supernovae: II. Pointing towards moderate mass precursors
• Photometric and Spectroscopic Properties of Type II-P Supernovae
• Type II supernova spectral diversity I: Observations, sample characterization and spectral line evolution
• Absolute-Magnitude Distributions of Supernovae
• The early detection and follow-up of the highly obscured Type II supernova 2016ija/DLT16am
• Comparison of progenitor mass estimates for the type IIP SN 2012A
• Bolometric Corrections for optical light curves of Core-collapse Supernovae
• UBVRIz Light Curves of 51 Type II Supernovae
• On the nature of Hydrogen-rich Superluminous Supernovae
• Supernova rates from the SUDARE VST-Omegacam search. I
• Supernova 2013by: A Type IIL Supernova with a IIP-like light curve drop
• Supernova 2012aw - a high-energy clone of archetypal type IIP SN 1999em
• The chemically controlled synthesis of dust in type II-P supernovae
• H-alpha Spectral diversity of type II supernovae
• The Type IIP Supernova 2012aw in M95: hydrodynamical modelling of the photospheric phase from accurate spectrophotometric monitoring
• Photospheric Magnitude Diagrams for Type II Supernovae: A Promising Tool to Compute Distances
• SN 2009N: Linking normal and subluminous type II-P SNe
• Moderately Luminous type II Supernovae
• Asphericity, Interaction, and Dust in the Type II-P/II-L Supernova 2013ej in Messier 74
• Supersolar Ni/Fe production in the Type IIP SN 2012ec
• Distance Determination To Eight Galaxies Using Expanding Photosphere Method
• On the Lack of X-ray Bright Type IIP Supernovae
• Supernova spectra below strong circum-stellar interaction
• SN 2009ib: A Type II-P Supernova with an Unusually Long Plateau
• A Global Model of The Light Curves and Expansion Velocities of Type II-Plateau Supernovae
• Spectrophotometric templates for core collapse supernovae and their application in simulations of time-domain surveys
• Interacting supernovae and supernova impostors. LSQ13zm: an outburst heralds the death of a massive star
• SN 2013ab : A normal type IIP supernova in NGC 5669
• SN 2012ec: mass of the progenitor from PESSTO follow-up of the photospheric phase
• Radiation-hydrodynamical modelling of underluminous type II plateau Supernovae
• Light curve analysis of ordinary type IIP supernovae based on neutrino-driven explosion simulations in three dimensions
• The importance of 56Ni in shaping the light curves of type II supernovae
• Anomaly Detection in the Open Supernova Catalog
• SN 2016X: A Type II-P Supernova with A Signature of Shock Breakout from Explosion of A Massive Red Supergiant
• The Iron Yield of Normal Type II Supernovae
• Defining Photometric Peculiar Type Ia Supernovae
• SNe 2013K and 2013am: observed and physical properties of two slow, normal Type IIP events
• The Evolution of Temperature and Bolometric Luminosity in Type-II Supernovae
• Hydrogen-rich Core Collapse Supernovae
• Photometric and polarimetric observations of fast declining Type II supernovae 2013hj and 2014G
• Luminous Type II supernovae for their low expansion velocities
• Optical and Ultraviolet Observations of the Very Young Type IIP SN 2014cx in NGC 337
• ASASSN-15nx: A luminous Type II supernova with a "perfect" linear decline
• Supernova 2018cuf: A Type IIP supernova with a slow fall from plateau
• LSQ13fn: A type II-Plateau supernova with a possibly low metallicity progenitor that breaks the standardised candle relation
• ASASSN-14dq: A fast-declining type II-P Supernova in a low-luminosity host galaxy
• SN 2015ba: A type IIP supernova with a long plateau
• SN 2018gj: A Short-plateau Type II Supernova with Persistent Blue-shifted H-alpha Emission
• SN 2016esw: a luminous Type II supernova observed within the first day after the explosion
• ASASSN-18am/SN 2018gk : An overluminous Type IIb supernova from a massive progenitor
• SN 2015an: a normal luminosity type II supernova with low expansion velocity at early phases
• SN 2016B a.k.a ASASSN-16ab: a transitional type II supernova
• Building spectral templates and reconstructing parameters for core collapse supernovae with CASTOR
• SN 2016iog: A fast declining Type II-L supernova with an ultra-faint tail, persistently interacting with circumstellar material
• STag II: Classification of Serendipitous Supernovae Observed by Galaxy Redshift Surveys
• A graph-based spectral classification of Type II supernovae