Machine learning-accelerated chemistry modeling of protoplanetary disks

Autor:	Smirnov-Pinchukov, Grigorii V., Molyarova, Tamara, Semenov, Dmitry A., Akimkin, Vitaly V., van Terwisga, Sierk, Francheschi, Riccardo, Henning, Thomas
Rok vydání:	2022
Předmět:	Astrophysics - Earth and Planetary Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - Solar and Stellar Astrophysics Computer Science - Machine Learning
Zdroj:	A&A 666, L8 (2022)
Druh dokumentu:	Working Paper
DOI:	10.1051/0004-6361/202244691
Popis:	Aims. With the large amount of molecular emission data from (sub)millimeter observatories and incoming James Webb Space Telescope infrared spectroscopy, access to fast forward models of the chemical composition of protoplanetary disks is of paramount importance. Methods. We used a thermo-chemical modeling code to generate a diverse population of protoplanetary disk models. We trained a K-nearest neighbors (KNN) regressor to instantly predict the chemistry of other disk models. Results. We show that it is possible to accurately reproduce chemistry using just a small subset of physical conditions, thanks to correlations between the local physical conditions in adopted protoplanetary disk models. We discuss the uncertainties and limitations of this method. Conclusions. The proposed method can be used for Bayesian fitting of the line emission data to retrieve disk properties from observations. We present a pipeline for reproducing the same approach on other disk chemical model sets. Comment: 11 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2209.13336 Zobrazit plný text záznamu View this record from Arxiv