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Binary stars are of course more than two stars, but they are also at least two stars. In this chapter we will review some aspects of the physics governing the evolution of single massive stars. We will also review the uncertainties of key…

太阳与恒星天体物理 · 物理学 2018-08-29 Cyril Georgy , Sylvia Ekström

With the exception of the Big Bang, responsible for 1,2H, 3,4He, and 7Li, stars act as sources for the composition of the interstellar medium. Cosmic rays are related to the latter and very probably due to acceleration of the mixed…

Rotation appears as a dominant effect in massive star evolution. It largely affects all the model outputs: inner structure, tracks, lifetimes, isochrones, surface compositions, blue to red supergiant ratios, etc. At lower metallicities, the…

天体物理学 · 物理学 2007-05-23 André Maeder , Georges Meynet

Massive and intermediate mass stars play a crucial role in astrophysics. Indeed, massive stars are the main producers of heavy elements, explode in supernovae at the end of their short lifetimes, and may be the progenitors of gamma ray…

太阳与恒星天体物理 · 物理学 2015-10-21 Daniel R. Reese

The earliest stars to form in the Universe were the first sources of light, heat and metals after the Big Bang. The products of their evolution will have had a profound impact on subsequent generations of stars. Recent studies of primordial…

天体物理学 · 物理学 2015-06-24 R. Schneider , A. Ferrara , R. Salvaterra , K. Omukai , V. Bromm

The process that leads to the formation and early evolution of low-mass stars is in a broad sense well understood theoretically and carefully traced observationally. The largest uncertainties in this framework reside in the poorly known…

天体物理学 · 物理学 2007-05-23 Francesco Palla , Sofia Randich

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…

宇宙学与河外天体物理 · 物理学 2014-11-20 Jordi Casanellas , Ilidio Lopes

Motivated by the possible existence of other universes, with possible variations in the laws of physics, this paper explores the parameter space of fundamental constants that allows for the existence of stars. To make this problem…

天体物理学 · 物理学 2009-11-13 Fred C. Adams

Massive stars are linked with diverse astronomical processes and objects including star formation, supernovae and their remnants, cosmic rays, interstellar media, and galaxy evolution. Understanding their properties is of primary importance…

太阳与恒星天体物理 · 物理学 2023-03-08 Koh Takahashi , Tomoya Takiwaki , Takashi Yoshida

Massive stars and their supernovae are prominent sources of radioactive isotopes, the observations of which thus can help to improve our astrophysical models of those. Our understanding of stellar evolution and the final explosive endpoints…

高能天体物理现象 · 物理学 2010-08-13 Friedrich-Karl Thielemann , Raphael Hirschi , Matthias Liebendörfer , Roland Diehl

Star 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. Several physical…

太阳与恒星天体物理 · 物理学 2020-05-27 Anna L. Rosen , Stella S. R. Offner , Sarah I. Sadavoy , Asmita Bhandare , Enrique Vázquez-Semadeni , Adam Ginsburg

It has been a longstanding problem to determine, as far as possible, the characteristic masses of stars in terms of fundamental constants; the almost complete invariance of this mass as a function of the star-forming environment suggests…

太阳与恒星天体物理 · 物理学 2015-05-30 Mark R. Krumholz

In this chapter I give an overall description of the structure and evolution of stars of different masses, and review the main ingredients included in state-of-the-art calculations aiming at reproducing observational features. I give…

太阳与恒星天体物理 · 物理学 2017-12-27 Víctor Silva Aguirre

The observable characteristics and subsequent evolution of young stellar populations is dominated by their massive stars. As our understanding of those massive stars and the factors affecting their evolution improves, so our interpretation…

星系天体物理 · 物理学 2022-09-28 Jan J. Eldridge , Elizabeth R. Stanway

This paper reviews the physics of stars, the type, structure, evolution and stability. Simple thermodynamics and statistical mechanics are used to show the inner working of white dwarf and neutron stars. The major concentration of the paper…

科普物理 · 物理学 2024-03-21 Anuj Chaudhri

White dwarfs and neutron stars are stellar objects with masses comparable to that of our sun. However, as the endpoint stages of stellar evolution, these objects do not sustain any thermonuclear burning and therefore can no longer support…

天体物理学 · 物理学 2007-05-23 Shmuel Balberg , Stuart L. Shapiro

Most stars with birth masses larger than that of our Sun belong to binary or higher order multiple systems. Similarly, most stars have stellar winds. Radiation pressure and multiplicity create outflows of material that remove mass from the…

太阳与恒星天体物理 · 物理学 2022-12-07 Hugues Sana

In many evolutionary stages, low- and intermediate-mass stars show signs of mixing of the surface material with material from the interior. To account for all the details revealed by the observations it is necessary to include non-standard…

太阳与恒星天体物理 · 物理学 2011-07-01 Rodolfo Smiljanic

The evolution of star clusters is determined by several internal and external processes. Here we focus on two dominant internal effects, namely energy exchange between stars through close encounters (two-body relaxation) and mass-loss of…

星系天体物理 · 物理学 2011-06-24 Mark Gieles

Using a sample of 126000 late-type galaxies from the SDSS, we analyzed stellar mass as a function of the dynamical mass. Stellar masses are estimated using eight stellar population synthesis (SPS) models with constant IMF, while dynamical…