Results 41 to 50 of about 11,937,910 (228)

Progenitors and Hydrodynamics of Type II and lb Supernovae [PDF]

open access: yesInternational Astronomical Union Colloquium, 1996
We review critical physics affecting the observational characteristics of those supernovae that occur in massive stars. Particular emphasis is given to 1) how mass loss, either to a binary companion or by a radiatively driven wind, affects the type and light curve of the supernova, and 2) the interaction of the outgoing supernova shock with regions of ...
S. E. Woosley   +2 more
openaire   +1 more source

Air Pollution Quinones Impair Intestinal Barrier Integrity and Endoplasmic Reticulum in Differentiated Caco‐2 Cells

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Particulate matter (PM) is a major global health threat, linked to millions of deaths annually. Beyond inhalation, PM components reach the gastrointestinal tract through the mucociliary escalator or contaminated food and water. Among PM's organic fraction, redox‐active quinones such as 1,2‐naphthoquinone (NQ) and 9,10‐phenanthrenequinone (PQ ...
Franco Cervellati   +6 more
wiley   +1 more source

ON THE INTRINSIC DIVERSITY OF TYPE II-PLATEAU SUPERNOVAE [PDF]

open access: yesThe Astrophysical Journal, 2015
8 pages, 5 figures, accepted to ...
Pejcha, Ondrej, Prieto, Jose L.
openaire   +2 more sources

Dust formation and evolution in the ejecta of core-collapse supernovae [PDF]

open access: yes, 2015
Observations of local supernovae over the past couple of decades have reported the presence of dust in the ejecta. The dust masses inferred from observations in mid-infrared and submillimeter wavelengths differ by a factor of 10^2 to 10^4 The composition
Sarangi, Arkaprabha
core   +1 more source

JWST Observations of SN 2024ggi. II. NIRSpec Spectroscopy and CO Modeling at +285–385 Days past the Explosion

open access: yesThe Astrophysical Journal
We present James Webb Space Telescope (JWST) Near-Infrared Spectrograph observations of SN 2024ggi, spanning wavelengths of 1.7–5.5 μ m at +285.51 and +385.27 days postexplosion.
T. Mera   +22 more
doaj   +1 more source

Proprioception drives tension wood formation for autotropic straightening and postural control in trees

open access: yesNew Phytologist, EarlyView.
Proprioception controls trunk straightness in trees through opposite tension wood formation. A spherical growth chamber (a), combined with a two‐dimensional rotating clinostat (b2), suppresses gravi‐ and phototropic sensing. The tree is first tilted horizontally (b1), triggering upward gravitropic bending, actuated by tension wood formation on the ...
Alexandre Caulus   +7 more
wiley   +1 more source

Optical observations of Type II supernovae

open access: yesAIP Conference Proceedings, 2000
18 pages, 10 embedded figures, latex with aipproc style file included, to appear in "Cosmic Explosions" -- eds. S. Holt and W. W.
openaire   +2 more sources

Dust formation in primordial Type II supernovae [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2001
11 pages, LaTeX, 11 figures, MNRAS ...
Todini, Paolo, Ferrara, Andrea
openaire   +2 more sources

Multimessenger Constraints on the Central Engine in SN 2023ixf: Neutron Star or Black Hole?

open access: yesThe Astrophysical Journal
The physical trigger of core-collapse supernovae (CC-SNe) is a central theme in modern surveys of the transient Universe. A multimessenger approach may provide a unique window to CC-SNe produced by a newly born neutron star (NS) or black hole (BH). Here,
Maryam Aghaei Abchouyeh   +2 more
doaj   +1 more source

The Prevalence and Influence of Circumstellar Material around Hydrogen-rich Supernova Progenitors

open access: yesThe Astrophysical Journal, 2023
Narrow transient emission lines (flash-ionization features) in early supernova (SN) spectra trace the presence of circumstellar material (CSM) around the massive progenitor stars of core-collapse SNe.
Rachel J. Bruch   +47 more
doaj   +1 more source

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