A Caltech Library Service

Forward modelling and retrievals with PLATON, a fast open source tool

Zhang, Michael and Chachan, Yayaati and Kempton, Eliza M.-R. and Knutson, Heather A. (2018) Forward modelling and retrievals with PLATON, a fast open source tool. . (Unpublished)

[img] PDF - Accepted Version
See Usage Policy.


Use this Persistent URL to link to this item:


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 this https under the open source GPL-3.0 license.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper ItemSoftware
Zhang, Michael0000-0002-0659-1783
Chachan, Yayaati0000-0003-1728-8269
Kempton, Eliza M.-R.0000-0002-1337-9051
Knutson, Heather A.0000-0002-0822-3095
Additional Information:M.Z. acknowledges Plato (Greek:ΠΛATΩN) for his insightful philosophy and his contribution to the package's name. We thank Carlos E. Munoz for generating high-resolution opacity data in a format suitable for PLATON. We thank Jayesh Goyal for assistance in comparing PLATON to ATMO. Support for this work was provided by HST GO programs 13431, 13665, and 14260. Software: numpy, scipy, matplotlib, emcee, nestle, corner, nose, Travis-CI
Group:Astronomy Department
Record Number:CaltechAUTHORS:20190124-122606633
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92459
Deposited By: George Porter
Deposited On:25 Jan 2019 17:15
Last Modified:20 Apr 2020 08:47

Repository Staff Only: item control page