TYPE Ia SUPERNOVAE STRONGLY INTERACTING WITH THEIR CIRCUMSTELLAR MEDIUM

@article{Silverman2015TYPEIS,
  title={TYPE Ia SUPERNOVAE STRONGLY INTERACTING WITH THEIR CIRCUMSTELLAR MEDIUM},
  author={Jeffrey M. Silverman and Peter E. Nugent and Avishay Gal-yam and Mark Sullivan and D. Andrew Howell and Alexei V. Filippenko and Iair Arcavi and Sagi Ben-Ami and Joshua S. Bloom and S. Bradley Cenko and Yi Cao and Ryan Chornock and Kelsey I. Clubb and Alison L. Coil and Ryan J. Foley and Melissa. L. Graham and Christopher V. Griffith and Assaf Horesh and Mansi M. Kasliwal and Shrinivas R. Kulkarni and Douglas C. Leonard and Weidong Li and Thomas Matheson and Adam A. Miller and Maryam Modjaz and Eran. O. Ofek and Yen-Chen Pan and Daniel A. Perley and Dovi Poznanski and Robert M. Quimby and Thea N. Steele and Assaf Sternberg and Dong Xu and Ofer Yaron},
  journal={The Astrophysical Journal Supplement Series},
  year={2015},
  volume={207}
}
Owing to their utility for measurements of cosmic acceleration, Type Ia supernovae (SNe Ia) are perhaps the best-studied class of SNe, yet the progenitor systems of these explosions largely remain a mystery. A rare subclass of SNe Ia shows evidence of strong interaction with their circumstellar medium (CSM), and in particular, a hydrogen-rich CSM; we refer to them as SNe Ia-CSM. In the first systematic search for such systems, we have identified 16 SNe Ia-CSM, and here we present new spectra of… 

Don’t Blink: Constraining the Circumstellar Environment of the Interacting Type Ia Supernova 2015cp

Despite their cosmological utility, the progenitors of Type Ia supernovae (SNe Ia) are still unknown, with many efforts focused on whether accretion from a nondegenerate companion can grow a

Delayed Circumstellar Interaction for Type Ia SN 2015cp Revealed by an HST Ultraviolet Imaging Survey

The nature and role of the binary companion of carbon–oxygen white dwarf stars that explode as Type Ia supernovae (SNe Ia) are not yet fully understood. Past detections of circumstellar material

AGAINST THE WIND: RADIO LIGHT CURVES OF TYPE IA SUPERNOVAE INTERACTING WITH LOW-DENSITY CIRCUMSTELLAR SHELLS

For decades a wide variety of observations spanning the radio through optical and on to the X-ray have attempted to uncover signs of type Ia supernovae (SNe Ia) interacting with a circumstellar

Interacting Supernovae: Types IIn and Ibn

Supernovae (SNe) that show evidence of strong shock interaction between their ejecta and pre-existing, slower circumstellar material (CSM) constitute an interesting, diverse, and still poorly

AN EXCESS OF MID-INFRARED EMISSION FROM THE TYPE Iax SN 2014dt

Supernovae Type Iax (SNe Iax) are less energetic and less luminous than typical thermonuclear explosions. A suggested explanation for the observed characteristics of this subclass is a binary

New approaches to SNe Ia progenitors

SN2012ca: A stripped envelope core-collapse SN interacting with dense circumstellar medium

We report optical and near-infrared observations of SN 2012ca with the Public ESO Spectroscopy Survey of Transient Objects (PESSTO), spread over one year since discovery. The supernova (SN) bears

Observational Clues to the Progenitors of Type Ia Supernovae

Type Ia supernovae (SNe Ia) are important distance indicators, element factories, cosmic-ray accelerators, kinetic-energy sources in galaxy evolution, and end points of stellar binary evolution. It

Searching for swept-up hydrogen and helium in the late-time spectra of 11 nearby Type Ia supernovae

The direct detection of a stellar system that explodes as a Type Ia supernova (SN Ia) has not yet been successful. Various indirect methods have been used to investigate SN Ia progenitor systems but

Nebular Hα Limits for Fast Declining SNe Ia

One clear observational prediction of the single-degenerate progenitor scenario as the origin of type Ia supernovae (SNe) is the presence of relatively narrow (≈1000 km s−1) Hα emission at nebular
...

References

SHOWING 1-10 OF 80 REFERENCES

Subaru Spectroscopy of the Interacting Type Ia Supernova SN 2002ic: Evidence of a Hydrogen-rich, Asymmetric Circumstellar Medium

Optical spectroscopy of the Type Ia supernova SN 2002ic obtained on 2003 June 27.6 UT, i.e., ~222 rest-frame days after explosion, is presented. Strong H emission indicates an interaction between the

Supernova 2008J: early time observations of a heavily reddened SN 2002ic-like transient

Supernovae (SNe) are the final stage in the life of massive stars. Their explosion unbinds the progenitor star revealing its inner layers. The SN ejecta interact with the circumstellar material

Optical observations of Type II supernovae

I present an overview of optical observations (mostly spectra) of Type II supernovae. SNe II are defined by the presence of hydrogen, and exhibit a very wide variety of properties. SNe II-L tend to

LINKING TYPE Ia SUPERNOVA PROGENITORS AND THEIR RESULTING EXPLOSIONS

Comparing the ejecta velocities at maximum brightness and narrow circumstellar/interstellar Na D absorption line profiles of a sample of 23 Type Ia supernovae (SNe Ia), we determine that the

Optical spectra of supernovae

The temporal evolution of the optical spectra of various types of supernovae (SNe) is illustrated, in part to aid observers classifying supernova candidates. Type II SNe are defined by the presence

Nearby Supernova Factory Observations of SN 2005gj: Another Type Ia Supernova in a Massive Circumstellar Envelope

We report Nearby Supernova Factory observations of SN 2005gj, the second confirmed case of a ``hybrid'' Type Ia/IIn supernova, which we interpret as the explosion of a white dwarf interacting with a

On the nature of the circumstellar medium of the remarkable Type Ia/IIn supernova SN 2002ic

We present results from the first high-resolution, high signal-to-noise ratio spectrum of SN 2002ic. The resolved Ha line has a P Cygni-type profile, clearly demonstrating the presence of a dense,

An asymptotic-giant-branch star in the progenitor system of a type Ia supernova

The presence of strong hydrogen emission associated with the type Ia supernova SN2002ic is reported, indicating the presence of large amounts of circumstellar material, and it is inferred that the progenitor system contained a massive asymptotic-giant-branch star that lost several solar masses of hydrogen-rich gas before the supernova explosion.

Fourteen months of observations of the possible super-Chandrasekhar mass Type Ia Supernova 2009dc

In this paper, we present and analyse optical photometry and spectra of the extremely luminous and slowly evolving Type Ia supernova (SN Ia) 2009dc, and offer evidence that it is a

The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star

It is shown that the high-redshift supernova SNLS-03D3bb has an exceptionally high luminosity and low kinetic energy that both imply a super-Chandrasekhar-mass progenitor, which may provide an explanation for the observed trend that overluminous type Ia supernovae occur only in ‘young’ environments.
...