Article: A hybrid line list for CH
2017 Volume 605
Abstract: Aims: Molecular line lists (a catalogue of transition frequencies and line strengths) are important for modelling absorption and emission processes in atmospheres of different astronomical objects, such as cool stars and exoplanets. In order to be ... ...
Abstract | Aims: Molecular line lists (a catalogue of transition frequencies and line strengths) are important for modelling absorption and emission processes in atmospheres of different astronomical objects, such as cool stars and exoplanets. In order to be applicable for high temperatures, line lists for molecules like methane must contain billions of transitions, which makes their direct (line-by-line usage) application in radiative transfer calculations impracticable. Here we suggest a new, hybrid line list format to mitigate this problem, based on the idea of temperature-dependent absorption continuum. Methods: The line list is partitioned into a large set of relatively weak lines and a small set of important, stronger lines. The weaker lines are then used either to construct a temperature-dependent (but pressure-independent) set of intensity cross sections or are blended into a greatly reduced set of 'super-lines'. The strong lines are kept in the form of temperature-independent Einstein Results: A line list for methane (CH |
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Language | English |
Publishing date | 2017-08-18 |
Publishing country | Germany |
Document type | Journal Article |
ZDB-ID | 1458466-9 |
ISSN | 1432-0746 ; 0004-6361 |
ISSN (online) | 1432-0746 |
ISSN | 0004-6361 |
DOI | 10.1051/0004-6361/201731026 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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