Bibcode
Valdivielso, L.; Esparza, P.; Martín, E. L.; Maukonen, D.; Peale, R. E.
Bibliographical reference
The Astrophysical Journal, Volume 715, Issue 2, pp. 1366-1369 (2010).
Advertised on:
6
2010
Journal
Citations
11
Refereed citations
6
Description
High-resolution spectroscopy in the near-infrared could become the
leading method for discovering extra-solar planets around very low mass
stars and brown dwarfs. In order to help to achieve an accuracy of ~m
s-1, we are developing a gas cell which consists of a mixture
of gases whose absorption spectral lines span all over the near-infrared
region. We present the most promising mixture, made of acetylene,
nitrous oxide, ammonia, chloromethanes, and hydrocarbons. The mixture is
contained in a small size 13 cm long gas cell and covers most of the H
and K bands. It also shows small absorptions in the J band, but they are
few and not sharp enough for near-infrared wavelength calibration. We
describe the working method and experiments, and compare our results
with the state of the art for near-infrared gas cells.