Forward Modeling and Retrievals with PLATON, a Fast Open-source Tool

被引：96
|
作者：
Zhang, Michael [1 ]
Chachan, Yayaati [2 ]
Kempton, Eliza M. -R. [3 ,4 ]
Knutson, Heather A. [2 ]
机构：
[1] CALTECH, Dept Astron, Pasadena, CA 91125 USA
[2] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA
[3] Univ Maryland, Dept Astron, College Pk, MD 20742 USA
[4] Grinnell Coll, Dept Phys, 1116 8th Ave, Grinnell, IA 50112 USA
来源：
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2019年 / 131卷 / 997期
关键词：
methods: data analysis; techniques: spectroscopic; planets and satellites: atmospheres; planets and satellites: composition; planets and satellites: general; TRANSMISSION SPECTRA; EXOPLANET; STELLAR; DWARFS; HAZE; FOG;
D O I：
10.1088/1538-3873/aaf5ad
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We introduce PLanetary Atmospheric Transmission for Observer Noobs (PLATON), a Python package that calculates transmission spectra for exoplanets and retrieves atmospheric characteristics based on observed spectra. PLATON is easy to install and use, with common use cases taking no more than a few lines of code. It is also fast, with the forward model taking much less than one second, and a typical retrieval finishing in minutes on an ordinary desktop. PLATON supports the most common atmospheric parameters, such as temperature, metallicity, C/O ratio, cloud-top pressure, and scattering slope. It also has less commonly included features, such as a Mie scattering cloud model and unocculted starspot corrections. The code is available online at. https://github.com/ideasrule/platon under the open-source GPL-3.0 license.
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页数：15
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