604 citations · 1.6k across the 33 of their papers we have counts for
5 papers · 2 filters
K-H_2 Quasi-molecular absorption detected in the T-dwarf epsilon Indi Ba
France Allard, Nicole F. Allard, Derek Homeier +3
T-type dwarfs present a broad and shallow absorption feature centred around 6950 A in the blue wing of the K doublet at 0.77 micron which resembles in depth and shape the satellite…
Alkali Line Profiles in Ultracool White Dwarfs
Derek Homeier, Nicole F. Allard, Christine M. S. Johnas +2
We present PHOENIX atmosphere models for metal-rich cool white dwarfs using improved line shapes for the Na I and K I resonance doublets. Profiles for collisional broadening due to…
Alkali Line Profiles in Degenerate Dwarfs
Derek Homeier, Nicole F. Allard, France Allard
Ultracool stellar atmospheres show absorption by alkali resonance lines severely broadened by collisions with neutral perturbers. In the coolest and densest atmospheres, such as th…
A high resolution spectral atlas of brown dwarfs
A. Reiners, D. Homeier, P. H. Hauschildt +1
We present a UVES/VLT high resolution atlas of three L dwarfs and one T dwarf system, spectral classes at which most of the objects are brown dwarfs. Our atlas covers the optical r…
Cool objects: From SED fitting to age estimation
A. Bayo, D. Barrado y Navascues, M. Morales-Calderon +4
The physical properties of almost any kind of astronomical object can be derived by fitting synthetic spectra or photometry extracted from theoretical models to observational data.…