Results 41 to 50 of about 35,122 (152)

A Linear Relation between the Color Stretch s BV and the Rising Color Slope of Type Ia Supernovae

open access: yesThe Astrophysical Journal, 2023
Using data from the Complete Nearby (redshift z _host < 0.02) sample of Type Ia Supernovae (CNIa0.02), we find a linear relation between two parameters derived from the B − V color curves of Type Ia supernovae: the color stretch s _BV and the rising ...
Ping Chen   +36 more
doaj   +1 more source

Thermal X-Ray Emission from Shocked Ejecta in Type Ia Supernova Remnants II: Parameters Affecting the Spectrum

open access: yes, 2005
The supernova remnants left behind by Type Ia supernovae provide an excellent opportunity for the study of these enigmatic objects. In a previous work, we showed that it is possible to use the X-ray spectra of young Type Ia supernova remnants to explore ...
Carles Badenes   +4 more
core   +2 more sources

Constraining Cosmic Evolution of Type Ia Supernovae [PDF]

open access: yes, 2007
We present the first large-scale effort of creating composite spectra of high-redshift type Ia supernovae (SNe Ia) and comparing them to low-redshift counterparts.
A. C. Becker   +33 more
core   +7 more sources

Photometry and Spectroscopy of SN 2024pxl: A Luminosity Link among Type Iax Supernovae

open access: yesThe Astrophysical Journal
We present extensive ultraviolet to optical photometric and optical to near-infrared (NIR) spectroscopic follow-up observations of the nearby intermediate-luminosity ( M _V = −16.81 ± 0.19 mag) Type Iax supernovae (SNe Iax) 2024pxl in NGC 6384.
Mridweeka Singh   +92 more
doaj   +1 more source

The Progenitors of Superluminous Type Ia Supernovae

open access: yesThe Astrophysical Journal, 2023
Recent observations of type Ia supernovae (SNe Ia) have discovered a subclass of “super-Chandrasekhar” SNe Ia (SC SNe Ia) whose high luminosities and low ejecta velocities suggest that they originate from the explosions of white dwarfs (WDs) with masses ...
Margot Fitz Axen, Peter Nugent
doaj   +1 more source

Type Ia Supernovae: An Examination of Potential Progenitors and the Redshift Distribution [PDF]

open access: yes, 1997
We examine the possibility that supernovae type Ia (SN Ia) are produced by white dwarfs accreting from Roche-lobe filling evolved companions, under the assumption that a strong optically thick stellar wind from accretor is able to stabilize the mass ...
Canal R.   +18 more
core   +3 more sources

Comparing the Locations of Supernovae to CO (2–1) Emission in Their Host Galaxies

open access: yesThe Astrophysical Journal, 2023
We measure the molecular gas environment near recent (
Ness Mayker Chen   +21 more
doaj   +1 more source

Extrapolation of Type Ia Supernova Spectra into the Near-infrared Using Principal Component Analysis

open access: yesThe Astrophysical Journal
We present a method of extrapolating the spectroscopic behavior of Type Ia supernovae (SNe Ia) in the near-infrared (NIR) wavelength regime up to 2.30 μ m using optical spectroscopy.
Anthony Burrow   +16 more
doaj   +1 more source

A JWST Near- and Mid-infrared Nebular Spectrum of the Type Ia Supernova 2021aefx

open access: yesThe Astrophysical Journal Letters, 2023
We present JWST near-infrared (NIR) and mid-infrared (MIR) spectroscopic observations of the nearby normal Type Ia supernova (SN) SN 2021aefx in the nebular phase at +255 days past maximum light.
Lindsey A. Kwok   +57 more
doaj   +1 more source

Positron Escape from Type Ia Supernovae

open access: yes, 1999
We generate bolometric light curves for a variety of type Ia supernova models at late times, simulating gamma-ray and positron transport for various assumptions about the magnetic field and ionization of the ejecta.
Ardeberg A. L.   +14 more
core   +1 more source

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