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Angular Momentum and Mass Loss for Hot Stars

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概要 Fundamental unsolved problems of stellar astrophysics include the effects of angular momentum on stellar structure and evolution, the nature and efficiency of the processes by which angular momentum i...s redistributed within and lost from stars, and the role that stellar rotation plays in enhancing or driving stellar mass loss. There appears to be a qualitative change in the nature and efficiency of these mechanisms near spectral type FO: hotter (more massive) stars typically retain more angular momentum at least until they reach the main sequence, while cooler stars typically spin down quickly. For the hotter stars, recent work suggests a strong link between the type of pulsation behavior, the mass loss rates, and the rotation velocity. If the same mechanisms are able to drive mass loss from the main sequence A stars, as has recently been proposed, then the current interpretations of a number of observations will be drastically affected: e. g. the ages of clusters may be incorrect by up to a factor of two, and the surface abundances of isotopes of He, Li and Be may no longer give constraints on cosmological nucleosynthesis. There are also effects on the evolution of the abundances of elements in the interstellar medium and on the general evolution of populations of stars. Thus the questions of the mechanisms of angular momentum and mass loss of stars more massive than the sun is important not only for stellar studies but for the foundations of much of modern astrophysics.続きを見る
目次 Why a Meeting on Angular Momentum and Mass Loss for Hot Stars?
Angular Momentum and Mass Loss and Stellar Evolution
The Effects of Rotation on Stellar Structure and Evolution
New Evolutionary Aspects of Mass Loss and Angular Momentum
Mass Loss During the Evolution of Massive Stars
Pre-Main Sequence Stages
Angular Momentum Loss in Pre-Main Sequence Objects and the Initial Angular Momentum of Stars
The Herbig Ae and Be Stars: Mass and Angular Momentum Losses
Eccentric Spiral Modes in Disks Associated with Young Stellar Objects
Evidence that Wolf-Rayet Stars are Pre-Main Sequence Objects
A and F Stars near the Main Sequence
Rotation, Pulsation and Atmospheric Phenomena in A-Type Stars
Pulsation Studies of a 1.8 M? Delta Scuti Model
Post-Main Sequence Evolution of Binary Am Stars
A Statistical Study of Main Sequence A and F Stars: Testing the Main Sequence Mass Loss Hypothesis
O, B and Be Stars
Basic Magnetic Rotator Theory with Application to the Angular Momentum Driven Winds of B[e] and Wolf Rayet Stars
The Connection between Rotation and the Winds of Be Stars
UV Glimpse of OB Stars
Nonspherical Radiation Driven Wind Models Applied to Be Stars
A Simple Criterion to Identify Rapidly Rotating Stars Viewed at Small to Intermediate Inclination Angles
Intensive Photometric Campaign on Be Stars: Behaviour of Short-Term Periodic Variations and its Relationship to Pulsation and Mass Loss
Constraints on the Thickness of Be Star Disks Derived from Combined IR Excess and Optical Polarimetry Data
On the Correlation between Pulsation Amplitude and Shell Activity in the Be star ? Eridani
B[e] Supergiants: Continuum Polarization by Electron Scattering in Rotationally Distorted, Radiation Driven Stellar Winds
Rotational Evolution of Hot Stars due to Mass Loss and Magnetic Fields
New Facts About the Variability of 45 ? Persei
Long-Term Study of Stellar-Wind Variability of O Stars
HeII ?1640 as a Diagnostic for Assessing the Extent of Rapid Rotation in Be Stars
Some Examples of the Role of Stellar Rotation in Hot Star Winds
HD 193077
A Fast Rotating Wolf-Rayet Star
How Effective is Rotation in Enhancing the Rate of Mass Loss in Early Type Stars?
Rotation and Pulsation-Mode-Selection in B-Type Stars
The Angular Momentum-Loss and the Differential Rotation in B and Be Stars
Very Luminous and Very Massive Stars
The Role of Axial Symmetry in the Upper Part of the HRD: B[e] Supergiants and LBVs
Effects of Mass Loss on Late Stages of Massive Star Evolution
V444 Cygni and CQ Cephei, Key Wolf-Rayet Binary Stars
Rotation of Hot Stars After They Cool Off
Winds, Mass Loss and Rotation in Central Stars of Planetary Nebulae
White Dwarf Mass Loss, Rotation, Individual Masses and the Identification of the White Dwarf Remnants of Upper Main Sequence Stars
Evolved Stars as Probes of Main Sequence Angular Momentum and Mass Loss
The Bizarre Kinematics of Planetary Nebula NGC 7009, and Some Thoughts on the Transfer of Stellar Angular Momentum to Planetary Nebulae
Chromospheric H? Activity in ? ORI
Stellar Winds in A-Type Supergiants
Special Section: A Debate Concerning the Nature of Wolf-Rayet Stars
The Evidence that Wolf-Rayet Stars are in a Late Stage of Evolution
Why Wolf-Rayet Stars Should Not Be Considered To Be Evolved Cores of Massive Stars
Author index
Keyword index
Astronomical index.
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登録日 2020.06.27
更新日 2020.06.28