The Rocket Science of Launching Stellar Disks

9/19/01


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Table of Contents

The Rocket Science of Launching Stellar Disks

Disks in Space

Where do stars, planets, we, come from??

Saturnís rings

Spiral Galaxies

Disk in Center of Galaxy

Beta Pictoris

Lagoon Nebula

Gaseous Pillars in M16

Proto-stellar nebuale

Protostellar Collapse

Binary mass exchange

Binary mass exchange

Gravity

Angular mometum

Centrifugal force

Orbital motion

Summary: Disks from Infalling Matter

The Rocket Science of Launching Stellar Disks

Spectral lines & Doppler shift

Be stars

The Puzzle of Be Disks

Key Puzzle Pieces

Rotational Broadening of Photospheric Absorption Lines

Formation of a P-Cygni Line- Profile

Wind Compressed Disk Model

Hydrodynamical Simulations of Wind Compressed Disks

Inner Disk Infall

WCD Inhibition by Non-Radial Forces

WCD Inhibition by Poleward Line-Force

Problems with WCD Model

Launching into Earth Orbit

Launching into Be star orbit

SPH simulations - P. Kroll

Line-Profile Variations from Non-Radial Pulsation

NRP Mode Beating

Pulsation & Mass Ejection

NonRadial Radiative Driving

First try: Localized Equatorial Bright Spots

Rotational Modulation of Hot-Star Winds

Symmetric Bright Spot on Rapidly Rotating Be Star

RDOME Radiatively Driven Orbital Mass Ejection

Time Evolution of Single Prograde Spot

Prominence/Filament

Force Cutoff

Outward Viscous Diffusion of Ejected Gas

Time Evolution of m=4 Prograde Spot Model

Summary

Author: Stan Owocki

Email: owocki@bartol.udel.edu

Home Page: www.bartol.udel.edu/~owocki

Other information:
Here are slides from a colloquium level talk I've recently b een givin on formation of circumstellar disks around Be stars.

Download presentation source