Low-mass starsStellar feedbackNumerical methodsSynthetic observationsStar formation is a multi-scale, multi-physics problem ranging from the size scale of molecular clouds ($\\sim$10s pc) down to the size scales of dense prestellar cores ($\\sim$0.1 pc) that are the birth sites of stars. ...
The evolution of the baryonic and dark matter components of galaxies is not only a critical test of the hierarchical formation paradigm, but ultimately also provides new clues on the complex interplay between star formation, the cooling and heating of gas and galaxy merging processes.This book ...
On the formation of low-mass black holes in massive binary stars Firstly, black holes are generally``seen'' only in binaries, by the accretion of matter from a companion star.High mass black holes are capable of ... GE Brown,JC Weingartner,RAMJ Wijers - 《Arxiv Cornell University Library...
Three-component models of the initial mass function (IMF) are made to consider possible origins for the observed relative variations in the numbers of brown dwarfs, solar-to-intermediate-mass stars and high-mass stars. The differences between the IMFs observed for clusters, field and remote field...
This solves the so-called lifetime problem of ultracompact H ii region. We conclude that the the most significant differences between the formation of low-mass and high-mass stars are all explained as the result of rapid accretion within a dense, gravitationally unstable flow. 展开 ...
The formation and evolution of low-mass stars within dense halos of dark matter (DM) leads to evolution scenarios quite different from the classical stellar evolution. As a result of our detailed numerical work, we describe these new scenarios for a range of DM densities on the host halo, a...
High-energy astrophysics is the study of the processes that occur within stars, black holes and supernovae. These processes can be monitored by measuring the high-energy electromagnetic radiation and particles that they emit including x-rays, ultraviolet light and gamma rays. These observations are...
Stars with an initial mass on the Zero Age Main Sequence above 8 M⊙are considered to be high mass stars. They evolve in a short timescale (<25 Myr) by nuclear fusion of successively all available...Prantzos, NikosSpringer Berlin Heidelberg...
The significance of these younger very metal-poor stars is discussed in the context of Galactic evolution, mentioning such possibilities as hierarchical star-formation/mass-infall of very metal-poor material and/or accretion events whereby this material has been acquired from other (dwarf) galaxies ...
magnetism; high-mass stars; stellar evolution; magnetic field evolution; fossil fields; dynamo fields; angular momentum transport; magnetic braking; mass-loss quenching1. Introduction Magnetism plays an important role in several astrophysical phenomena. For example, stellar and planetary magnetic fields ...