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5. Feb. 2018 · The carbon cycle, or Bethe-Weizsäcker cycle, plays an important role in astrophysics as one of the most important energy sources for quiescent and explosive hydrogen burning in stars. This paper presents the intellectual and historical background of the idea of the correlation between stellar energy production and the synthesis of ...
- Michael Wiescher
- mwiesche@nd.edu
- 2018
The CNO cycle (for carbon – nitrogen – oxygen; sometimes called Bethe–Weizsäcker cycle after Hans Albrecht Bethe and Carl Friedrich von Weizsäcker) is one of the two known sets of fusion reactions by which stars convert hydrogen to helium, the other being the proton–proton chain reaction (p–p cycle), which is more efficient at the Sun 's core te...
8. Dez. 2023 · We perform astrochemical modelling to simulate the impact of an α-enhanced ISM gas cloud on the abundances of the three phases of carbon (C +, C, CO) dubbed as ‘the carbon cycle’.
10. Aug. 2022 · Carbon is cycled between planetary systems and the interstellar medium as stars die and are reborn. Along the way carbon-based molecules exhibit many spectroscopic phenomena posing...
- Christopher S. Hansen
6. Dez. 2023 · We perform astrochemical modeling to simulate the impact of an α -enhanced ISM gas cloud on the abundances of the three phases of carbon (C +, C, CO) dubbed as `the carbon cycle'.
- arXiv:2312.03237 [astro-ph.GA]
- Astrophysics of Galaxies (astro-ph.GA)
15. Okt. 2021 · Carbon plays an important role in this because it is the basis of life and thus ultimately of human beings. But how effective is the cosmic source of this important building block? A study led by the Max Planck Institute for Astrophysics shows that massive stars produce twice as much carbon when they have a companion star.
11. Okt. 2021 · The carbon-cycle chemistry is known to be quite sensitive to the cosmic-ray ionization rate, ζ, controlled by the flux of low-energy cosmic rays which get attenuated through molecular clouds. However, astrochemical models commonly assume a constant cosmic-ray ionization rate in the clouds. Aims.
