Preliminary Results on HAT-P-4, TrES-3, XO-2, and GJ 436 from the NASA EPOXI Mission

TL;DR

This paper presents preliminary photometric results from the EPOXI mission's observations of four known transiting exoplanet systems, detailing the data extraction process and initial findings.

Contribution

It introduces the data reduction methodology and provides early observational results for four exoplanet systems from the EPOXI mission.

Findings

Initial photometric time series obtained for four exoplanet systems.

Preliminary analysis shows promising data quality for transit characterization.

Methodology established for future detailed analysis of exoplanet transits.

Abstract

EPOXI (EPOCh + DIXI) is a NASA Discovery Program Mission of Opportunity using the Deep Impact flyby spacecraft. The EPOCh (Extrasolar Planet Observation and Characterization) Science Investigation will gather photometric time series of known transiting exoplanet systems from January through August 2008. Here we describe the steps in the photometric extraction of the time series and present preliminary results of the first four EPOCh targets.