Results 121 to 130 of about 2,475,925 (212)

Electron-capture Supernova Candidates from Light Curves: Implications for Their Progenitors and Explosion Properties

open access: yesThe Astrophysical Journal
Core-collapse supernovae are explosions of massive stars. While most massive stars end as iron-core-collapse supernovae, less massive stars are expected to explode as electron-capture supernovae (ECSNe), defining the low-mass boundary of core-collapse ...
Masato Sato   +7 more
doaj   +1 more source

Light-curve and spectral properties of ultrastripped core-collapse supernovae leading to binary neutron stars [PDF]

open access: yes, 2017
We investigate light-curve and spectral properties of ultrastripped core-collapse supernovae. Ultrastripped supernovae are the explosions of heavily stripped massive stars that lost their envelopes via binary interactions with a compact companion star ...
Blinnikov, SI   +29 more
core   +1 more source

Probing the Shock Breakout Signal of SN 2024ggi from the Transformation of Early Flash Spectroscopy

open access: yesThe Astrophysical Journal Letters
We present early-time, hour-to-day cadence spectroscopy of the nearby Type II supernova (SN II) 2024ggi, which was discovered at a phase when the SN shock had just emerged from the red supergiant (RSG) progenitor star.
Jujia Zhang   +13 more
doaj   +1 more source

88th Annual Meeting of the Meteoritical Society 2026: Contents

open access: yes
Meteoritics &Planetary Science, Volume 61, Issue S1, Page S2-S47, August 2026.
wiley   +1 more source

Optical observations of core-collapse supernovae

open access: yesAIP Conference Proceedings, 2001
I present an overview of optical observations (mostly spectra) of Type II, Ib, and Ic supernovae (SNe). SNe II are defined by the presence of hydrogen, and exhibit a very wide variety of properties. SNe II-L tend to show evidence of late-time interaction with circumstellar material.
openaire   +2 more sources

Discovery and Extensive Follow-up of SN 2024ggi, a Nearby Type IIP Supernova in NGC 3621

open access: yesThe Astrophysical Journal
We present the discovery and early observations of the nearby Type II supernova (SN) 2024ggi in NGC 3621 at 6.64 ± 0.3 Mpc. The SN was caught $5.{8}_{-2.9}^{+1.9}$ hr after its explosion by the ATLAS survey.
Ting-Wan Chen   +49 more
doaj   +1 more source

88th Annual Meeting of the Meteoritical Society 2026: Abstracts

open access: yes
Meteoritics &Planetary Science, Volume 61, Issue S1, Page S48-S551, August 2026.
wiley   +1 more source

Characterizing the Rapid Hydrogen Disappearance in SN 2022crv: Evidence of a Continuum between Type Ib and IIb Supernova Properties

open access: yesThe Astrophysical Journal
We present optical and near-infrared (NIR) observations of SN 2022crv, a stripped-envelope supernova in NGC 3054, discovered within 12 hr of explosion by the Distance Less Than 40 Mpc Survey.
Yize Dong   +54 more
doaj   +1 more source

Optical and Near-infrared Nebular-phase Spectroscopy of SN 2024ggi: Constraints on the Structure of the Inner Ejecta, Progenitor Mass, and Dust

open access: yesThe Astrophysical Journal
We present optical and near-infrared (NIR) spectroscopic observations of the nearby Type II supernova SN 2024ggi ranging from 250 to 581 days after the explosion.
Emilio Hueichapán   +9 more
doaj   +1 more source

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