Kavli Affiliate: Avi Shporer
| First 5 Authors: Jonathan Gomez Barrientos, Jonathan Gomez Barrientos, , ,
| Summary:
We present an upgraded version of TRICERATOPS, a software package designed to
calculate false positive probabilities for planet candidates identified by the
Transiting Exoplanet Survey Satellite (TESS). This enhanced framework now
incorporates ground-based light curves in separate bandpasses, which are
routinely obtained as part of the candidate vetting process. We apply this
upgraded framework to explore the planetary nature of 14 TESS planet
candidates, combining primarily J band light curves acquired with the 200-inch
Hale Telescope at Palomar Observatory with complementary archival observations
from the Las Cumbres Observatory Global Telescope (LCOGT), the Fred Lawrence
Whipple Observatory (FLWO), and the Teide Observatory, along with existing TESS
data and contrast curves from high-resolution imaging. As a result of this
analysis we statistically validate (False Positive Probability < 1.5% and
Nearby False Positive Probability < 0.1%) six new planets in five systems:
TOI-1346 b, TOI-1346 c, TOI-2719 b, TOI-4155 b, TOI-6000 b, and TOI-6324 b. For
these systems, we provide updated estimates of their stellar and planetary
properties derived from the TESS and ground-based observations. These new
systems contain planets with radii between 0.9-6 Re and orbital periods between
0.3-5.5 days. Finally, we use our upgraded version of TRICERATOPS to quantify
the relative importance of multi-wavelength transit photometry and
high-resolution imaging for exoplanet candidate validation, and discuss which
kinds of candidates typically benefit the most from ground-based multi-color
transit observations.
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