Optical photometry and spectroscopy of the low-luminosity, broad-lined Ic supernova iPTF15dld

Abstract

Core-collapse stripped-envelope supernova (SN) explosions reflect the diversity of physical parameters and evolutionary paths of their massive star progenitors. We have observed the type Ic SN iPTF15dld (z = 0.047), reported by the Palomar Transient Factory. Spectra were taken starting 20 rest-frame days after maximum luminosity and are affected by a young stellar population background. Broad spectral absorption lines associated with the SN are detected over the continuum, similar to those measured for broad-lined, highly energetic SNe Ic. The light curve and maximum luminosity are instead more similar to those of low luminosity, narrow-lined Ic SNe. This suggests a behavior whereby certain highly-stripped-envelope SNe do not produce a large amount of Ni56, but the explosion is sufficiently energetic that a large fraction of the ejecta is accelerated to higher-than-usual velocities. We estimate SN iPTF15dld had a main sequence progenitor of 20-25 Msun, produced a Ni56 mass of ~0.1-0.2 Msun, had an ejecta mass of [2-10] Msun, and a kinetic energy of [1-18] e51 erg.

11 pages, 7 figures, accepted for publication in MNRAS

References in corpus (18)

• The Supernova -- Gamma-Ray Burst Connection
• An optical supernova associated with the X-ray flash XRF 060218
• PESSTO : survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects
• A neutron-star-driven X-ray flash associated with supernova SN 2006aj
• Asphericity in Supernova Explosions from Late-Time Spectroscopy
• Paper II: Calibration of the Swift ultraviolet/optical telescope
• The Broad-lined Type Ic SN 2003jd
• Optical Spectra of 73 Stripped-Envelope Core-Collapse Supernovae
• SN 2004aw: Confirming Diversity of Type Ic Supernovae
• Early-time light curves of Type Ib/c supernovae from the SDSS-II Supernova Survey
• The carbon-rich type Ic SN 2007gr: the photospheric phase
• The GRB 060218/SN 2006aj event in the context of other Gamma-Ray Burst Supernovae
• On the association between core-collapse supernovae and HII regions
• Joint Analysis of near-infrared properties and surface brightness fluctuations of LMC star clusters
• Swift Ultraviolet Observations of Supernova 2014J in M82: Large Extinction from Interstellar Dust
• The Swift UVOT Stars Survey: I. Methods and Test Clusters
• Optical Follow-Up Observations of PTF10qts, a Luminous Broad-Lined Type Ic Supernova Found by the Palomar Transient Factory
• Radio follow-up of gravitational wave triggers during Advanced LIGO O1

Cited by in corpus (2)

• Velocity evolution of broad-lined type-Ic supernovae with and without gamma-ray bursts
• Galaxy Optical Variability of Virgo Cluster: New Tracer for Environmental Influences on Galaxies