Investigating the impact of exoplanets parameters on their habitability

JOURNAL OF OCCULTATION AND ECLIPSE (JOE); ISSN 2522-7955; No. 4, 2017

B. Sakhaei^1,2, P. Ghaznavi², S.J. Jafarzadeh^1,2, A. Poro^1,2, K. Rokni^2,3, N. Fathalian^1,2,4, S. Sarabi^1,2, F. Montazeri^1,2, P. Arab Ameri², B. Ghobadi Bisetooni^1,2, S.M.A Shoja², A. Helavati², S.J. Enayati^1,2, M. Yazdani², M. Daneshi², H. Yusefabaadi², S. Rahimi², K. Mokhtari², M. Yousefzadeh Shabestari²

¹The International Occultation Timing Association-Middle East Section, Iran

²The Fifth Summer School of Astronomy (IOTA/ME and ISA), Iran

³Iranian Space Agency, Iran

⁴Department of Physics, PayameNour University, P.O.Box 19295-3697, Tehran, Iran

Abstract

Today, as more exoplanets are discovered, the desire for finding habitable ones increases. There are many climate models for assessing the habitability and climate changes of exoplanets. One of the simplest, yet accurate enough models is the latitudinal energy balance model. It is a diffusion-like process, which simulates the temperature profile over the planet surface. In this study, our purpose is to investigate the impact of some parameters of exoplanets on their temperature and habitability. Our exoplanet candidates are GJ 273b, Trappist-1d, 'Tau Ceti-e, GJ 3323b, and the studied parameters are planet eccentricity, diurnal period, obliquity and its fraction of ocean. In each case, the selected parameter was varied in a wide range. Finally, the probable descriptions of results are presented.

Keywords: Exoplanets, Habitable, Planets, Climate models