Planet Hunters TESS II: Findings from the first two years of TESS
release_p3ux3awy2jhb7ljuhc5uckoeom
by
Nora L. Eisner, Oscar Barragán, Chris Lintott, Suzanne Aigrain, Belinda Nicholson, Tabetha S. Boyajian, Steve B. Howell, Cole Johnston, Ben Lakeland, Grant Miller, Adam McMaster, Hannu Parviainen (+14 others)
2020
Abstract
We present the results from the first two years of the Planet Hunters TESS
citizen science project, which identifies planet candidates in the TESS data by
engaging members of the general public. Over 22,000 citizen scientists from
around the world visually inspected the first 26 Sectors of TESS data in order
to help identify transit-like signals. We use a clustering algorithm to combine
these classifications into a ranked list of events for each sector, the top 500
of which are then visually vetted by the science team. We assess the detection
efficiency of this methodology by comparing our results to the list of TESS
Objects of Interest (TOIs) and show that we recover 85 % of the TOIs with radii
greater than 4 Earth radii and 51 % of those with radii between 3 and 4 Earth
radii. Additionally, we present our 90 most promising planet candidates that
had not previously been identified by other teams, 73 of which exhibit only a
single transit event in the TESS light curve, and outline our efforts to follow
these candidates up using ground-based observatories. Finally, we present
noteworthy stellar systems that were identified through the Planet Hunters TESS
project.
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2011.13944v1
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