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A 3D radiative transfer framework: X. Arbitrary Velocity Fields in the Co-moving Frame
E. Baron, Peter H. Hauschildt, Bin Chen +1
3-D astrophysical atmospheres will have random velocity fields. We seek to combine the methods we have developed for solving the 1-D problem with arbitrary flows to those that we h…
A 3D radiative transfer framework IX. Time dependence
D. Jack, P. H. Hauschildt, E. Baron
Context. Time-dependent, 3D radiation transfer calculations are important for the modeling of a variety of objects, from supernovae and novae to simulations of stellar variability…
Fundamental properties and atmospheric structure of the red supergiant VY CMa based on VLTI/AMBER spectro-interferometry
M. Wittkowski, P. H. Hauschildt, B. Arroyo Torres +1
We investigate the atmospheric structure and fundamental properties of the red supergiant VY CMa. We obtained near-infrared spectro-interferometric observations of VY CMa with spec…
A New Extensive Library of Synthetic Stellar Spectra from PHOENIX Atmospheres and its Application to Fitting VLT MUSE Spectra
T. -O. Husser, S. Kamann, S. Dreizler +1
We present a new library of synthetic spectra based on the stellar atmosphere code PHOENIX. It covers the wavelength range from 500Å to 55000Å with a resolution of R=500000 in the…
Near-infrared light curves of type Ia supernovae
Dennis Jack, Peter H. Hauschildt, E. Baron
Aims. With our time-dependent model atmosphere code PHOENIX, our goal is to simulate light curves and spectra of hydrodynamical models of all types of supernovae. In this work, we…
Dark matter powered stars: Constraints from the extragalactic background light
A. Maurer, M. Raue, T. Kneiske +3
The existence of predominantly cold non-baryonic dark matter is unambiguously demonstrated by several observations (e.g., structure formation, big bang nucleosynthesis, gravitation…