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Weather on the Nearest Brown Dwarfs: Resolved Simultaneous Multi-Wavelength Variability Monitoring of WISE J104915.57-531906.1AB
Beth A. Biller, Ian J. M. Crossfield, Luigi Mancini +15
We present two epochs of MPG/ESO 2.2m GROND simultaneous 6-band () photometric monitoring of the closest known L/T transition brown dwarf binary WISE J104915.57-531906.1…
Granulation properties of giants, dwarfs, and white dwarfs from the CIFIST 3D model atmosphere grid
P. -E. Tremblay, H. -G. Ludwig, B. Freytag +2
3D model atmospheres for giants, dwarfs, and white dwarfs, computed with the CO5BOLD code and part of the CIFIST grid, have been used for spectroscopic and asteroseismic studies. U…
Oxygen spectral line synthesis: 3D non-LTE with CO5BOLD hydrodynamical model atmospheres
D. Prakapavicius, M. Steffen, A. Kucinskas +4
In this work we present first results of our current project aimed at combining the 3D hydrodynamical stellar atmosphere approach with non-LTE (NLTE) spectral line synthesis for a…
Progress in Modeling Very Low Mass Stars, Brown Dwarfs, and Planetary Mass Objects
F. Allard, D. Homeier, B. Freytag +2
We review recent advancements in modeling the stellar to substellar transition. The revised molecular opacities, solar oxygen abundances and cloud models allow to reproduce the pho…
Pure-hydrogen 3D model atmospheres of cool white dwarfs
P. -E. Tremblay, H. -G. Ludwig, M. Steffen +1
A sequence of pure-hydrogen CO5BOLD 3D model atmospheres of DA white dwarfs is presented for a surface gravity of log g = 8 and effective temperatures from 6000 to 13,000 K. We sho…