Light Curve Analysis of Ground-Based Data from Exoplanets Transit Database

TL;DR

This paper analyzes ground-based exoplanet transit light curves from the ETD to derive physical parameters and mid-transit times, demonstrating AIJ software's effectiveness for follow-up observations and TTV studies.

Contribution

It provides a comprehensive analysis of multiple exoplanet transits using AIJ, validating its accuracy against NASA data and supporting future ground-based exoplanet research.

Findings

AIJ yields parameter results comparable to NASA archives.

Analysis of 82 transit light curves for physical parameters.

Mid-transit times computed for future TTV analysis.

Abstract

Photometric observations of exoplanet transits can be used to derive the orbital and physical parameters of an exoplanet. We analyzed several transit light curves of exoplanets that are suitable for ground-based observations whose complete information is available on the Exoplanet Transit Database (ETD). We analyzed transit data of planets including HAT-P-8 b, HAT-P-16 b, HAT-P-21 b, HAT-P-22 b, HAT-P-28 b and HAT-P-30 b using the AstroImageJ (AIJ) software package. In this paper, we investigated 82 transit light curves from ETD, deriving their physical parameters as well as computing their mid-transit times for future Transit Timing Variation (TTV) analyses. The Precise values of the parameters show that using AIJ as a fitting tool for follow-up observations can lead to results comparable to the values at the NASA Exoplanet Archive (the NEA). Such information will be invaluable considering the numbers of future discoveries from the ground and space-based exoplanet surveys.