Ground based light curve follow-up validation observations of TESS object of interest TOI 7325.01

Abstract

This paper discusses the results of an observation on TOI 7325.01. This observation was taken at George Mason University’s research hall through the 0.8 m telescope with a red fi lter. The goal of the investigation was to determine whether planetary candidate TOI 7325 was actually a planet and not just a false positive signal found on the telescope observation. We wanted to take the data from the observation session for June 24th 2025 and create a plot so that we can determine the light curve transit to determine if our planetary candidate is a false signal or not. Through the use of fi nder charts for our observation night we can determine light curve transit through the use of software such as Astroimage j. This investigation fi rst had to have telescope images for observation which were taken through the research hall at Geroge Mason university. Luckily June 24th was a good night for observation so a good amount of data could be collected and we used fi nder charts to determine the location of the object of interest to create a plot for. Then we created plots of the transit through usage of reference stars and an NEB plot to determine the existence of possible eclipsing binaries. Through the plots and data collected we found that a transit for TOI 7325 was detected and made it a plausible planetary candidate as well as the seeing profi le further arguing that point. However the RMS was relatively high at 12.71 which may indicate that noise may have aff ected the signals we collected and the NEB plot came back as mostly not cleared which increases the chance that we had eclipsing binaries and may have gotten false signals. As a result of this, follow up would need to be done on this candidate as the results of it being a detection are inconclusive for this study.