Kavli Affiliate: Avi Shporer
| First 5 Authors: Priyashkumar Mistry, Aniket Prasad, Mousam Maity, Kamlesh Pathak, Sarvesh Gharat
| Summary:
NASA’s all-sky survey mission, the Transiting Exoplanet Survey Satellite
(TESS) is specifically designed to detect transiting exoplanets orbiting bright
stars. TESS has already identified about 400 transiting exoplanets, as well as
approximately 6000 candidates awaiting validation. In this work, we present the
outcomes of the project Validation of Transiting Exoplanets using Statistical
Tools (VaTEST), an ongoing endeavor dedicated to validating and characterizing
new exoplanets using statistical validation tools. We have validated eight
potential super-Earths using a combination of ground-based telescope data,
high-resolution imaging, and the statistical validation tool known as
texttt{TRICERATOPS}. These validated planets bear the designations: TOI-238b
(1.61$^{+0.09} _{-0.10}$ R$_oplus$), TOI-771b (1.42$^{+0.11} _{-0.09}$
R$_oplus$), TOI-871b (1.66$^{+0.11} _{-0.11}$ R$_oplus$), TOI-1467b
(1.83$^{+0.16} _{-0.15}$ R$_oplus$), TOI-1739b (1.69$^{+0.10} _{-0.08}$
R$_oplus$), TOI-2068b (1.82$^{+0.16} _{-0.15}$ R$_oplus$), TOI-4559b
(1.42$^{+0.13} _{-0.11}$ R$_oplus$), and TOI-5799b (1.62$^{+0.19} _{-0.13}$
R$_oplus$). We also studied the synthetic transmission spectra of all eight
validated planets in the HST and JWST band-pass using texttt{PLATON} and
texttt{PandExo}. Among all these validated planets, six of them fall within
the region known as ‘keystone planets,’ which makes them particularly
interesting for study. Based on the location of TOI-771b and TOI-4559b below
the radius valley we characterized them as likely super-Earths, though radial
velocity mass measurements for these planets will provide more details about
their characterization. It is noteworthy that planets within the size range
investigated herein are absent from our own solar system, making their study
crucial for gaining insights into the evolutionary stages between Earth and
Neptune.
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