High accuracy molecular line lists for exoplanetary atmospheres

Details High accuracy molecular line lists for exoplanetary atmospheres High accuracy molecular line lists for exoplanetary atmospheres

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf..870b&link_type=abstract

European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a

Statistics

Computation

Scientific paper

ABSTRACT Water, carbon monoxide, methane and ammonia are major constituents exoplanetary atmospheres. Measurements of the relative abundances of these species are capable of yielding information about physical conditions, including: temperature, pressure, thermal profile and metallicity. Modern observational techniques and instrumentation mean that in principle, we now have the capability to detect these molecules in the emission and absorption spectra of transiting exoplanets. However, in order to be able to interpret these data, robust atmospheric models and complete and accurate molecular line lists are required. Our team at UCL is a world leader in the computation of molecular spectroscopic line lists. The BT2 water line list [1], which contains over 500 million transitions, was used in the first secure detection of H2O in the atmosphere of a transiting exoplanet [2]. We are currently computing a line list for NH3, which is a considerably more dif cult task as the molecule has nine degrees of internal freedom (H2O has six). In this paper, we will discuss the ab initio computation of ro-vibrational molecular spectra and their application in exoplanetary studies. References [1] Barber R. J., Tennyson J., Harris G. J., Tolchenov R., 2006, MNRAS, 368, 1087 [2] Tinetti G. et al., 2007, Nature, 448, 169

Affiliated with

Also associated with

No associations

Rating

High accuracy molecular line lists for exoplanetary atmospheres does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with High accuracy molecular line lists for exoplanetary atmospheres, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High accuracy molecular line lists for exoplanetary atmospheres will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1795213