Volume 504, Number 1, September II 2009
|Page(s)||225 - 229|
|Published online||09 July 2009|
Methane line opacities in very cool stellar objects
Hamburger Sternwarte, Gojenbergsweg 112, 21029 Hamburg, Germany e-mail: email@example.com
2 Max-Planck-Institut für Plasmaphysik, Wendelsteinstr. 1, 17491 Greifswald, Germany
3 Lowell Observatory, Flagstaff, AZ, USA
Accepted: 26 June 2009
Aims. We investigate the effects of different line data for methane 12CH4 on the structures of model atmospheres and low resolution synthetic spectra for ultra-cool substellar objects.
Methods. For each set of methane line data we compare the resulting model atmospheres and spectra computed with the general purpose model atmosphere code PHOENIX.
Results. The new HGW methane line data compares well to the HITRAN2004 data. We find the the HITRAN2004 methane lines are in some bands stronger than the HGW lines, resulting in deeper absorption bands in the synthetic spectra.
Key words: molecular data / stars: atmospheres / stars: low-mass, brown dwarfs
© ESO, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.