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6 papers · 2 filters
Comoving-frame radiative transfer in arbitrary velocity fields -- II. Large scale applications
S. Knop, P. H. Hauschildt, E. Baron
A solution of the radiative-transfer problem in arbitrary velocity fields introduced in a previous paper, has limitations in its applicability. For large-scale applications, the me…
New Rare Earth Element Abundance Distributions for the Sun and Five r-Process-Rich Very Metal-Poor Stars
Christopher Sneden, James E. Lawler, John J. Cowan +2
We have derived new abundances of the rare-earth elements Pr, Dy, Tm, Yb, and Lu for the solar photosphere and for five very metal-poor, neutron-capture r-process-rich giant stars.…
A new formal solution of the radiative transfer in arbitrary velocity fields
S. Knop, P. H. Hauschildt, E. Baron
We present a new formal solution of the Lagrangian equation of radiative transfer that is useful in solving the equation of radiative transfer in the presence of arbitrary velocity…
Analyzing SN2003Z with PHOENIX
S. Knop, P. H. Hauschildt, E. Baron +1
We present synthetic spectra around maximum for the type II supernova SN 2003Z, which was first detected on January 29.7 2003. Comparison with observed spectra aim at the determina…
Comparative Direct Analysis of Type Ia Supernova Spectra. V. Insights from A Larger Sample and Quantitative Subclassification
David Branch, Leeann Chau Dang, E. Baron
A comparative study of optical spectra of Type Ia supernovae (SNe Ia) is extended, in the light of new data. The discussion is framed in terms of the four groups defined in previou…
Nucleosynthesis Modes in the High-Entropy-Wind of Type II Supernovae: Comparison of Calculations with Halo-Star Observations
K. Farouqi, K. -L. Kratz, L. I. Mashonkina +4
While the high-entropy wind (HEW) of Type II supernovae remains one of the more promising sites for the rapid neutron-capture (r-) process, hydrodynamic simulations have yet to rep…