Results 81 to 90 of about 3,128 (211)

The bulk mineralogy, elemental composition, and water content of the Winchcombe CM chondrite fall

open access: yesMeteoritics &Planetary Science, Volume 59, Issue 5, Page 1006-1028, May 2024.
Abstract On the microscale, the Winchcombe CM carbonaceous chondrite contains a number of lithological units with a variety of degrees of aqueous alteration. However, an understanding of the average hydration state is useful when comparing to other meteorites and remote observations of airless bodies.
H. C. Bates   +8 more
wiley   +1 more source

Big Bang Nucleosynthesis, Population III, and Stellar Genetics in the Galactic Halo [PDF]

open access: yes, 2002
The diverse isotopic and elemental signatures produced in different nucle- osynthetic sites are passed on to successive generations of stars. By tracing these chemical signatures back through the stellar populations of the Galaxy, it is pos- sible to ...
Ryan, Sean G.
core   +1 more source

Heavy Elements and Electromagnetic Transients from Neutron Star Mergers

open access: yesAnnalen der Physik, Volume 536, Issue 2, February 2024.
Astro‐(physics) has made major leaps forward through the combined information provided by both gravitational waves and electromagnetic emission from the first detected neutron star merger event. This review provides an up‐to‐date overview of today's understanding of neutron star mergers and their electromagnetic emission and it discusses possible ...
Stephan Rosswog, Oleg Korobkin
wiley   +1 more source

Challenges in nucleosynthesis of trans-iron elements

open access: yesAIP Advances, 2014
Nucleosynthesis beyond Fe poses additional challenges not encountered when studying astrophysical processes involving light nuclei. Astrophysical sites and conditions are not well known for some of the processes involved.
T. Rauscher
doaj   +1 more source

A mechanism to account for well known peculiarities of low mass AGB star nucleosynthesis

open access: yesEPJ Web of Conferences, 2017
We present here the application of a model for a mass circulation mechanism induced by the stellar magnetic field to study peculiar aspects of AGB star nucleosynthesis. The mixing scheme is based on a previously suggested magnetic-buoyancy process [1, 2]
Palmerini Sara   +3 more
doaj   +1 more source

Neutron capture reactions and stellar nucleosynthesis

open access: yes, 1966
Neutron capture reactions and stellar nucleosynthesis - heavy element ...
Gibbons, J. H.
core  

Evolution of Massive Population III Stars

open access: yesActa Polytechnica CTU Proceedings, 2014
While the evolution of massive stars in the local Universe is dominated by mass-loss, the evolution of massive Population III stars should be dominated by rotation.
Sung-Chul Yoon
doaj   +1 more source

Stellar Mixing and s-PROCESS Nucleosynthesis

open access: yesThe Astrophysical Journal, 1977
A model for the operation of the s-process is studied in which neutron capture occurs only in a thin layer at the bottom of a deep convective envelope. Simultaneous convective mixing and neutron capture are described by means of diffusion equations. We find that this model admits abundance distributions which resemble the solar system distribution, but
Richard L. Smith, Anthony Gonsiorowski
openaire   +1 more source

Galactic globular clusters: Ideal laboratories to test stellar nucleosynthesis?

open access: yes, 2008
Galactic globular cluster (GC) stars exhibit abundance patterns which are not shared by their field counterparts, namely the well-documented C-N, O-Na and Mg-Al anticorrelations.
C. Charbonnel
core   +1 more source

Nuclear reactions for nucleosynthesis beyond Fe [PDF]

open access: yes, 2015
Many more nuclear transitions have to be known in the determination of stellar reactivities for trans-iron nucleosynthesis than for reactions of light nuclei. This requires different theoretical and experimental approaches.
Rauscher, Thomas, Thomas Rauscher
core   +1 more source

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