Planet Patrol (project)
Planet Patrol is a NASA citizen science project available in Zooniverse and aimed at discovering new exoplanets with data from the TESS telescope.[1]
The project is built on results produced by a computer algorithm. The algorithm measures the center-of-light of the images and automatically compares it to the catalog position of the corresponding star.[2]
The main difference with Planet Hunters is that Planet Patrol looks at objects that represent a detected planet candidate in TESS data, whereas Planet Hunters searches through all the stars in the TESS databases and asks humans to find such candidates.[3]
As of September 2020, there are 1370 volunteers and 72,938 classifications have been done.[4]
The images representing a possible exoplanet transit show a single bright source near the middle of the image with a dot at the center.
Results[edit]
Two papers were published by Planet Patrol, vetting 1998 TESS Objects of Interest (TOIs). Of these TOIs 1461 passed as planet candidates, 286 were ruled out as false-positive and 251 were labelled as potential false-positive. The resulting catalog is named TESS Triple 9 (TT9), named after the number of vetted TOIs in each paper being 999.[5][6]
The second TT9 paper describes interesting planet candidates, such as TIC 396720998.01 (TOI 709.01), a sub-Jovian around a hot subdwarf, named LB 1721.[7] The planet candidate produces a V-shaped transit, which is different from the U-shaped transits that most planets produce.[6] TOI 709.01 was previously classified as a false-positive by TRICERATOPS, another vetting tool. Because this tool uses pre-existing knowledge of its host star and transit shape,[8] this tool might have been confused by the small size of the host star and the resulting V-shape of a transit. TOI 709.01 would be the second transiting planet around a degenerate star if confirmed. The first transiting planet around a white dwarf was WD 1856+534 b.
The paper also describes two planet candidates in the habitable zone: TOI 715.01 and the already confirmed TOI 1227 b.[6]
See also[edit]
References[edit]
- ^ Kazmierczak, Jeanette (2020-09-28). "Search for New Worlds at Home With NASA's Planet Patrol Project". NASA. Retrieved 2020-11-02.
- ^ "FAQ". www.zooniverse.org. Retrieved 2020-09-30.
- ^ "FAQ". www.zooniverse.org. Retrieved 2020-09-30.
- ^ "Planet Patrol". www.zooniverse.org. Retrieved 2020-09-30.
- ^ Cacciapuoti, Luca; Kostov, Veselin B.; Kuchner, Marc; Quintana, Elisa V.; Colón, Knicole D.; Brande, Jonathan; Mullally, Susan E.; Chance, Quadry; Christiansen, Jessie L.; Ahlers, John P.; Di Fraia, Marco Z.; Durantini Luca, Hugo A.; Ienco, Riccardo M.; Gallo, Francesco; de Lima, Lucas T. (2022-06-01). "The TESS Triple-9 Catalog: 999 uniformly vetted exoplanet candidates". Monthly Notices of the Royal Astronomical Society. 513 (1): 102–116. arXiv:2203.15826. Bibcode:2022MNRAS.513..102C. doi:10.1093/mnras/stac652. ISSN 0035-8711.
- ^ a b c Magliano, Christian; Kostov, Veselin; Cacciapuoti, Luca; Covone, Giovanni; Inno, Laura; Fiscale, Stefano; Kuchner, Marc; Quintana, Elisa V.; Salik, Ryan; Saggese, Vito; Yablonsky, John M.; Fornear, Aline U.; Hyogo, Michiharu; Di Fraia, Marco Z.; Luca, Hugo A. Durantini (2023-05-01). "The TESS Triple-9 Catalog II: a new set of 999 uniformly vetted exoplanet candidates". Monthly Notices of the Royal Astronomical Society. 521 (3): 3749–3764. arXiv:2303.00624. Bibcode:2023MNRAS.521.3749M. doi:10.1093/mnras/stad683. ISSN 0035-8711.
- ^ "toi 709". simbad.cds.unistra.fr. Retrieved 2023-05-11.
- ^ Giacalone, Steven; Dressing, Courtney D.; Jensen, Eric L. N.; Collins, Karen A.; Ricker, George R.; Vanderspek, Roland; Seager, S.; Winn, Joshua N.; Jenkins, Jon M.; Barclay, Thomas; Barkaoui, Khalid; Cadieux, Charles; Charbonneau, David; Collins, Kevin I.; Conti, Dennis M. (2021-01-01). "Vetting of 384 TESS Objects of Interest with TRICERATOPS and Statistical Validation of 12 Planet Candidates". The Astronomical Journal. 161 (1): 24. arXiv:2002.00691. Bibcode:2021AJ....161...24G. doi:10.3847/1538-3881/abc6af. hdl:1721.1/134566.2. ISSN 0004-6256.
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