A New Parameterization for Finding Solutions for Microlensing Exoplanet Light Curves

Autor:	Hall, Kylie E., Yee, Jennifer C., Shin, In-Gu, Yang, Hongjing, Zhang, Jiyuan
Rok vydání:	2024
Předmět:	Astrophysics - Earth and Planetary Astrophysics Astrophysics - Astrophysics of Galaxies Astrophysics - Instrumentation and Methods for Astrophysics Astrophysics - Solar and Stellar Astrophysics
Zdroj:	PASP 136 094401 (2024)
Druh dokumentu:	Working Paper
DOI:	10.1088/1538-3873/ad70d7
Popis:	The gravitational microlensing method of discovering exoplanets and multi-star systems can produce degenerate solutions, some of which require in-depth analysis to uncover. We propose a new parameter space that can be used to sample potential solutions more efficiently and is more robust at finding all degenerate solutions. We identified two new parameters, k and h, that can be sampled in place of the mass ratios and separations of the systems under analysis to identify degenerate solutions. The parameter k is related to the size of the central caustic, $\Delta\xi_c$, while h is related to the distance of a point along the k contour from log(s)=0, where s is the projected planet-host separation. In this work, we present the characteristics of these parameters and the tests we conducted to prove their efficacy. Comment: 18 pages, updated with version accepted to PASP
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2404.15502 Zobrazit plný text záznamu View this record from Arxiv