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   Articles with "type supernovae" as a keyword



The influence of host galaxy morphology on the properties of Type Ia supernovae from the JLA compilation

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recommendations! Published in 2017 at "New Astronomy"

DOI: 10.1016/j.newast.2016.08.009

Abstract: Abstract The observational cosmology with distant Type Ia supernovae (SNe) as standard candles claims that the Universe is in accelerated expansion, caused by a large fraction of dark energy. In this paper we investigate the… read more here.

Keywords: jla compilation; type supernovae; morphology; host ... See more keywords
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The delay of shock breakout due to circumstellar material evident in most type II supernovae

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recommendations! Published in 2018 at "Nature Astronomy"

DOI: 10.1038/s41550-018-0563-4

Abstract: Type II supernovae (SNe II) originate from the explosion of hydrogen-rich supergiant massive stars. Their first electromagnetic signature is the shock breakout (SBO), a short-lived phenomenon that can last for hours to days depending on… read more here.

Keywords: type supernovae; shock breakout; circumstellar material; shock ... See more keywords

The formation of solar-neighbourhood stars in two generations separated by 5 billion years

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recommendations! Published in 2018 at "Nature"

DOI: 10.1038/s41586-018-0329-2

Abstract: The chemical compositions of stars encode those of the gas from which they formed, providing important clues regarding the formation histories of galaxies. A powerful diagnostic is the abundance of α elements (O, Mg, Si,… read more here.

Keywords: interstellar medium; type supernovae; gas; formation ... See more keywords
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Progenitor properties of type II supernovae: fitting to hydrodynamical models using Markov chain Monte Carlo methods

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recommendations! Published in 2020 at "Astronomy and Astrophysics"

DOI: 10.1051/0004-6361/202038393

Abstract: The progenitor and explosion properties of type II supernovae (SNe II) are fundamental to understand the evolution of massive stars. Special interest has been given to the range of initial masses of their progenitors, but… read more here.

Keywords: type supernovae; hydrodynamical models; mass; properties type ... See more keywords

Ejecta Masses in Type Ia Supernovae—Implications for the Progenitor and the Explosion Scenario

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recommendations! Published in 2024 at "Publications of the Astronomical Society of the Pacific"

DOI: 10.1088/1538-3873/ad6e18

Abstract: The progenitor system(s) as well as the explosion mechanism(s) of thermonuclear (Type Ia) supernovae are long-standing issues in astrophysics. Here we present ejecta masses and other physical parameters for 28 recent Type Ia supernovae inferred… read more here.

Keywords: supernovae implications; explosion; type supernovae; masses type ... See more keywords

Producing Type Ia Supernovae from Hybrid CONe White Dwarfs with Main-sequence Binary Companions at Low Metallicity of Z = 0.0001

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recommendations! Published in 2024 at "Research in Astronomy and Astrophysics"

DOI: 10.1088/1674-4527/ada2e9

Abstract: The nature of progenitors of Type Ia supernovae (SNe Ia) and their explosion mechanism remains unclear. It has been suggested that SNe Ia may have resulted from thermonuclear explosions of hybrid carbon–oxygen–neon white dwarfs (CONe… read more here.

Keywords: metallicity; low metallicity; main sequence; type supernovae ... See more keywords

Berkeley supernova Ia program: data release of 637 spectra from 247 Type Ia supernovae

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recommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa102

Abstract: We present 637 low-redshift optical spectra collected by the Berkeley Supernova Ia Program (BSNIP) between 2009 and 2018, almost entirely with the Kast double spectrograph on the Shane 3~m telescope at Lick Observatory. We describe… read more here.

Keywords: type supernovae; supernova program; berkeley supernova;
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Early light curves of Type II supernovae interacting with a circumstellar disc

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recommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa2360

Abstract: Type II supernovae (SNe) interacting with disklike circumstellar matter (CSM) have been suggested as an explanation of some unusual Type II SNe, e.g., the so-called "impossible" SN, iPTF14hls. There are some radiation hydrodynamics simulations for… read more here.

Keywords: light curves; type supernovae; csm disk; sne ... See more keywords

How to break the mass sheet degeneracy with the lightcurves of microlensed Type Ia supernovae

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recommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stae1396

Abstract: The standardizable nature of gravitationally lensed Type Ia supernovae (glSNe Ia) makes them an attractive target for time delay cosmography, since a source with known luminosity breaks the mass sheet degeneracy. It is known that… read more here.

Keywords: sheet degeneracy; type supernovae; mass sheet;

A spectral data release for 104 Type II Supernovae from the Tsinghua Supernova Group

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recommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stae144

Abstract: We present 206 unpublished optical spectra of 104 type II supernovae obtained by the Xinglong 2.16m telescope and Lijiang 2.4m telescope during the period from 2011 to 2018, spanning the phases from about 1 to… read more here.

Keywords: 104 type; velocity decay; type supernovae; velocity ... See more keywords

On the fate of the secondary white dwarf in double-degenerate double-detonation Type Ia supernovae - II. 3D synthetic observables

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recommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stae1909

Abstract: A leading model for Type Ia supernovae involves the double-detonation of a sub-Chandrasekhar mass white dwarf. Double-detonations arise when a surface helium shell detonation generates shockwaves that trigger a core detonation; this mechanism may be… read more here.

Keywords: double detonation; detonation; white dwarf; type supernovae ... See more keywords