Asymmetric Explosion of Type Ia Supernovae as Seen from Near Infrared Observations
arXiv:astro-ph/0610303 · doi:10.1086/509919
Abstract
We present near-infrared spectra of late phase (>200 d) Type Ia supernovae (SNe Ia) taken at the Subaru telescope. The [Fe II] line of SN 2003hv shows a clear flat-topped feature, while that of SN 2005W show less prominent flatness. In addition, a large shift in their line center, varying from -3000 to 1000 (km/s) with respect to the host galaxies, is seen. Such a shift suggests the occurrence of an off-center, non-spherical explosion in the central region, and provides important, new constraints on the explosion models of SNe Ia.
8 pages, 10 figures. Accepted for publication in the Astrophysical Journal (Letters); some corrections done
Cited by in corpus (21)
- The Unique Type Ib Supernova 2005bf at Nebular Phases: A Possible Birth Event of A Strongly Magnetized Neutron Star
- SN 2003du: 480 days in the Life of a Normal Type Ia Supernova
- The ejected mass distribution of type Ia supernovae: A significant rate of non-Chandrasekhar-mass progenitors
- Comprehensive Observations of the Bright and Energetic Type Iax SN 2012Z: Interpretation as a Chandrasekhar Mass White Dwarf Explosion
- Nebular spectra and abundance tomography of the type Ia supernova SN 2011fe: a normal SN Ia with a stable Fe core
- Light and color curve properties of type Ia supernovae: Theory vs. Observations
- Thermonuclear Supernovae: Probing Magnetic Fields by Late-Time IR Line Profiles
- Late-time near-infrared observations of SN 2005df
- Spectroscopy of the Type Ia supernova 2011fe past 1000 days
- Late-time emission of type Ia supernovae: optical and near-infrared observations of SN 2001el
- The Plasma Structure of the Cygnus Loop from the Northeastern Rim to the Southwestern Rim
- A Three-Dimensional Picture of the Delayed-Detonation Model of Type Ia Supernovae
- The Three-Dimensional Expansion of the Ejecta from Tycho's Supernova Remnant
- Observational Characteristics and Possible Asphericity of Over-Luminous Type Ia Supernovae
- Early ultraviolet emission in the Type Ia supernova LSQ12gdj: No evidence for ongoing shock interaction
- Measuring an off-Center Detonation through Infrared Line Profiles: The peculiar Type Ia Supernova SN~2020qxp/ASASSN-20jq
- Physics of Thermonuclear Explosions: Magnetic Field Effects on Deflagration Fronts and Observable Consequences
- Nebular-Phase Spectra of Type Ia Supernovae from the Las Cumbres Observatory Global Supernova Project
- An analysis of the spectroscopic signatures of layering in the ejecta of type Iax supernovae
- Type Ia Supernova Progenitor Properties and Their Host Galaxies
- SN 2022joj: A Peculiar Type Ia Supernova Possibly Driven by an Asymmetric Helium-shell Double Detonation