Empirical methane (CH_4_) line list Virtual Observatory Resource

Authors
  1. Hargreaves R.J.
  2. Bernath P.F.
  3. Bailey J.
  4. Dulick M.
  5. Published by
    CDS
Abstract

Hot methane is found in many "cool" sub-stellar astronomical sources including brown dwarfs and exoplanets, as well as in combustion environments on Earth. We report on the first high-resolution laboratory absorption spectra of hot methane at temperatures up to 1200K. Our observations are compared to the latest theoretical spectral predictions and recent brown dwarf spectra. The expectation that millions of weak absorption lines combine to form a continuum, not seen at room temperature, is confirmed. Our high-resolution transmittance spectra account for both the emission and absorption of methane at elevated temperatures. From these spectra, we obtain an empirical line list and continuum that is able to account for the absorption of methane in high temperature environments at both high and low resolution. Great advances have recently been made in the theoretical prediction of hot methane, and our experimental measurements highlight the progress made and the problems that still remain.

Keywords
  1. atomic-physics
  2. spectroscopy
  3. infrared-astronomy
Bibliographic source Bibcode
2015ApJ...813...12H
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/813/12
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/813/12
Document Object Identifer DOI
doi:10.26093/cds/vizier.18130012

Access

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https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/813/12
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/813/12
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/813/12
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
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History

2016-03-11T15:16:57Z
Resource record created
2016-03-11T15:16:57Z
Created
2017-01-23T22:00:00Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr