Development of gas absorption cells for infrared echelle spectrographs
1 Instituto de Astrofísica de Canarias, C/Vía Láctea, s/n, 38205 La Laguna, Tenerife, Spain
2 Dpto. de Química Inorgánica de la Universidad de la Laguna, C/ Francisco Sánchez, s/n, 38204 La Laguna, Tenerife, Spain
3 CSIC-INTA Centro de Astrobiología, Ctra. Ajalvir km 4, 28850 Torrejón de Ardoz, Madrid, Spain
4 University of Centarl Florida, Physics Department, Orlando, Fl 32816, USA
a e-mail: email@example.com
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. To help to achieve an accuracy of about 1 m/s, 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 here present a summary of the working technique and the main results obtained so far.
© Owned by the authors, published by EDP Sciences, 2011