Speaker
Prof.
Jonathan Tennyson
(University College London)
Description
The ExoMol project provides comprehensive line lists with the aim of providing data for all molecules likely to be observable in exoplanet atmospheres in the foreseeable future [1]. This is a huge undertaking which involves providing in excess of a hundred of billion spectral lines for a large variety of molecular species [2]. The physics of molecular absorptions is complex and varies between different classes of absorbers, which are therefore divided into following topics (a) diatomic, (b) triatomics, (c) tetratomics, (d) methane and (e) larger molecules. Special techniques are being developed to treat each case. The line lists for a number of key atmospheric species currently available from ExoMol (www.exomol.com) including H$_2$O, NH$_3$, CaH, MgH, BeH, SiO, HCN/HNC, KCl, NaCl, CH$_4$, PN, PH$_3$, H$_2$CO, AlO, NaH, ScH, HNO$_3$, SO$_2$, SO$_3$, H$_2$S and NO. I will present examples of molecular spectra computed using the ExoMol line lists and discuss prospects for future studies.
[1] J. Tennyson and S.N. Yurchenko, Mon. Not. R. Astron. Soc., 425, 21 (2012).
[2] J. Tennyson and the ExoMol Team, J. Molec. Spectrosc. 372, 73 (2016).
Primary author
Prof.
Jonathan Tennyson
(University College London)
