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ASTR730 / CSI661 Fall 2012 Jie Zhang Stellar Astrophysics An Introduction Aug. 28, 2012 The Big Bang http://rampant-mac.com/dp_07/Big-Bang-Theory_alt2_1920.jpg History of…
Minicourse on Stellar Activity IV: Stellar Winds Jeffrey Linsky JILA/University of Colorado Boulder Colorado USA Department of Astronomy Yale University January 27, 2016…
Stellar Spectra Stellar Spectra Caroline Fletcher Spectroscopy The process of dispersion of an object's light into its component colors. Dispersion is the spatial separation…
1 Part II Stellar Winds and Hydrodynamic Atmospheres 1 Astronomical relevance of stellar winds 2 NLTE radiative transfer in stellar winds 3 Diagnostics of stellar winds 4…
Stellar Structure A star has a stable configuration. That is, there is a certain structure (mass distribution) to allow for such a force balance. Inward = gravity Outward
lecture-2-new.pptxEvolution 1 r m r r M R = = = = ( ) = 4π r2ρ (r) 1( ) stellar radius total mass of star mean density inside r mean density of star 2 g = g(r) = Gm(r)
σ(E) = S(E) e–2πη E-1 2πη = 31.29 Ζ1Ζ2 √μ/Ε μ = m1m2 / (m1+m2) Reaction Rate(star) ÷ ∫Φ(E) σ(E) dE Gamow Peak Maxwell Boltzmann Extrap. Meas.σ Carlo Broggini…
apdyn5.ppt• Not necessarily collision-free! Four independent, conservative, isolating integrals Orbits • Velocity components: • Energy may prevent r →
Observational Properties of Stellar Continua Balmer Jump, Continuum Slope Filters and Colors Balmer Line Wings Correcting for Interstellar Reddening Cool, faint Hot, bright…
Radiative Transfer for Simulations of Stellar Envelope Convection By Regner Trampedach 8/19/04 Hydro-dynamics Solve Euler equations Conservation of: Mass: dρ /dt = -u ∙∇…
Modeling a Carrington-scale Stellar Superflare and Coronal Mass Ejection from κ1CetModeling a Carrington-scale Stellar Superflare and Coronal Mass Ejection from k Cet1
Radiative Transfer for Simulations of Stellar Envelope Convection By Regner Trampedach 8/19/04 Hydro-dynamics Solve Euler equations Conservation of: Mass: dρ /dt = -u ∙∇…
σσσσ(E) = S(E) e–2πηπηπηπη E-1 2πη = 31.29 Ζπη = 31.29 Ζπη = 31.29 Ζπη = 31.29 Ζ1111ΖΖΖΖ2222 √√√√µ/Εµ/Εµ/Εµ/Ε µ = µ = µ =…
ASTR 7500: Solar Stellar Magnetism Hale CGEG Solar Space Physics Matthias Rempel Prof Juri Toomre + HAONSO colleagues Lecture 11 Tues 26 Feb 2013 zeuscoloradoeduastr7500-toomre…
Stellar evolution and nucleosynthesis in helium- enriched stars Amanda Karakas With Anna F. Marino & David M. Nataf, Luke Shingles, Carolyn Doherty, & John Lattanzio…
Kyle B. Westfall Kapteyn Astronomical Institute, Groningen, Netherlands The Stellar Velocity Ellipsoid and Multi-component Stability of Galaxy Disks σz σθ σR 2 Thursday,…
CDM cusps in LSB galaxies by means of stellar kinematics Pizzella, E.M.Corsini, F. Bertola Università di Padova And J. Magorrian, M. Sarzi University of Oxford Summary Introduction…
Lecture 12 Advanced Stages of Stellar Evolution – II Silicon Burning and NSE The solution of reaction networks. Consider the reaction pair: dY 1 dt =−Y 1 λ 1 + Y 2 λ…
Cloud Structure and the Origins of the Stellar Initial Mass Function in ρ-Ophiuchus Dylan R Nelson Department of Astronomy University of California Berkeley Jonathan J Swift…
Stellar Structure • Hydrostatic Equilibrium: dP dr = −Gmρ r2 , dm dr = 4πρr2 • Equation of State: P = ρ No µ kBT • Mean Molecular Weight: µ = 2 42X + 3 4 Y…