DIAmante TESS AutoRegressive Planet Search (DTARPS): II. Hundreds of New TESS Candidate Exoplanets. (arXiv:2302.06724v1 [astro-ph.EP])

DIAmante TESS AutoRegressive Planet Search (DTARPS): II. Hundreds of New TESS Candidate Exoplanets. (arXiv:2302.06724v1 [astro-ph.EP])
<a href="http://arxiv.org/find/astro-ph/1/au:+Melton_E/0/1/0/all/0/1">Elizabeth J. Melton</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Feigelson_E/0/1/0/all/0/1">Eric D. Feigelson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Montalto_M/0/1/0/all/0/1">Marco Montalto</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Caceres_G/0/1/0/all/0/1">Gabriel A. Caceres</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rosenswie_A/0/1/0/all/0/1">Andrew W. Rosenswie</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Abelson_C/0/1/0/all/0/1">Cullen S. Abelson</a>

The DIAmante TESS AutoRegressive Planet Search (DTARPS) project seeks to
identify photometric transiting planets from 976,814 southern hemisphere stars
observed in Year 1 of the TESS mission. This paper follows the methodology
developed by Melton et al. (Paper I) using light curves extracted and
pre-processed by the DIAmante project (Montalto et al. 2020). Paper I emerged
with a list of 7,377 light curves with statistical properties characteristic of
transiting planets but dominated by False Alarms and False Positives. Here a
multistage vetting procedure is applied including: centroid motion and crowding
metrics, False Alarm and False Positive reduction, photometric binary
elimination, and ephemeris match removal. The vetting produces a catalog of 462
DTARPS Candidates across the southern ecliptic hemisphere and 310 objects in a
spatially incomplete Galactic Plane list. Fifty-eight percent were not
previously identified as transiting systems. Candidates are flagged for
possible blending from nearby stars based on Zwicky Transient Facility data and
for possible radial velocity variations based on Gaia satellite data. Orbital
periods and planetary radii are refined using astrophysical modeling; the
resulting parameters closely match published values for Confirmed Planets.
Their properties are discussed in Paper III.

The DIAmante TESS AutoRegressive Planet Search (DTARPS) project seeks to
identify photometric transiting planets from 976,814 southern hemisphere stars
observed in Year 1 of the TESS mission. This paper follows the methodology
developed by Melton et al. (Paper I) using light curves extracted and
pre-processed by the DIAmante project (Montalto et al. 2020). Paper I emerged
with a list of 7,377 light curves with statistical properties characteristic of
transiting planets but dominated by False Alarms and False Positives. Here a
multistage vetting procedure is applied including: centroid motion and crowding
metrics, False Alarm and False Positive reduction, photometric binary
elimination, and ephemeris match removal. The vetting produces a catalog of 462
DTARPS Candidates across the southern ecliptic hemisphere and 310 objects in a
spatially incomplete Galactic Plane list. Fifty-eight percent were not
previously identified as transiting systems. Candidates are flagged for
possible blending from nearby stars based on Zwicky Transient Facility data and
for possible radial velocity variations based on Gaia satellite data. Orbital
periods and planetary radii are refined using astrophysical modeling; the
resulting parameters closely match published values for Confirmed Planets.
Their properties are discussed in Paper III.

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