DIAmante TESS AutoRegressive Planet Search (DTARPS). I. Analysis of 0.9 Million Light Curves
Nearly one million light curves from the TESS Year 1 southern hemisphere extracted from Full Field Images with the DIAmante pipeline are processed through the AutoRegressive Planet Search statistical procedure. ARIMA models remove lingering autocorrelated noise, the Transit Comb Filter identifies th...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astronomical Journal |
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| Online Access: | https://doi.org/10.3847/1538-3881/ad29f0 |
| _version_ | 1797216310930702336 |
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| author | Elizabeth J. Melton Eric D. Feigelson Marco Montalto Gabriel A. Caceres Andrew W. Rosenswie Cullen S. Abelson |
| author_facet | Elizabeth J. Melton Eric D. Feigelson Marco Montalto Gabriel A. Caceres Andrew W. Rosenswie Cullen S. Abelson |
| author_sort | Elizabeth J. Melton |
| collection | DOAJ |
| description | Nearly one million light curves from the TESS Year 1 southern hemisphere extracted from Full Field Images with the DIAmante pipeline are processed through the AutoRegressive Planet Search statistical procedure. ARIMA models remove lingering autocorrelated noise, the Transit Comb Filter identifies the strongest periodic signal in the light curve, and a Random Forest machine-learning classifier is trained and applied to identify the best potential candidates. Classifier training sets are based on injections of planetary transit signals, eclipsing binaries, and other variable stars. The optimized classifier has a True Positive Rate of 92.5% and a False Positive Rate of 0.43% from the labeled training set. The result of this DIAmante TESS autoregressive planet search of the southern ecliptic hemisphere analysis is a list of 7377 potential exoplanet candidates. The classifier had a 64% recall rate for previously confirmed exoplanets and a 78% negative recall rate for known False Positives. The completeness map of the injected planetary signals shows high recall rates for planets with 8–30 R _⊕ radii and periods 0.6–13 days and poor completeness for planets with radii <2 R _⊕ or periods <1 day. The list has many False Alarms and False Positives that need to be culled with multifaceted vetting operations (Paper II). |
| first_indexed | 2024-04-24T11:43:56Z |
| format | Article |
| id | doaj.art-92780780fe73473091663645423d0f44 |
| institution | Directory Open Access Journal |
| issn | 1538-3881 |
| language | English |
| last_indexed | 2024-04-24T11:43:56Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj.art-92780780fe73473091663645423d0f442024-04-09T14:42:46ZengIOP PublishingThe Astronomical Journal1538-38812024-01-01167520210.3847/1538-3881/ad29f0DIAmante TESS AutoRegressive Planet Search (DTARPS). I. Analysis of 0.9 Million Light CurvesElizabeth J. Melton0Eric D. Feigelson1https://orcid.org/0000-0002-5077-6734Marco Montalto2https://orcid.org/0000-0002-7618-8308Gabriel A. Caceres3Andrew W. Rosenswie4Cullen S. Abelson5Department of Astronomy & Astrophysics, Pennsylvania State University , University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Department of Physics and Optical Engineering, Rose-Hulman Institute of Technology , 5500 Wabash Avenue, Terre Haute, IN 47803, USADepartment of Astronomy & Astrophysics, Pennsylvania State University , University Park, PA 16802, USA; Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USA; Center for Astrostatistics, 525 Davey Laboratory, The Pennsylvania State University , University Park, PA 16802, USAINAF-Catania, Osservatorio Astrofisico di Catania , Via Santa Sofia 78, 95123 Catania, ItalyEY-Parthenon , 1540 Broadway, New York, NY 10036, USADepartment of Astronomy & Astrophysics, Pennsylvania State University , University Park, PA 16802, USA; Institut für Physik und Astronomie, Universität Potsdam , D-14476 Golm (Potsdam), Germany; Leibniz-Institut für Astrophysik Potsdam (AIP) , An der Sternwarte 16, D-14482 Potsdam, GermanyDepartment of Astronomy & Astrophysics, Pennsylvania State University , University Park, PA 16802, USA; Department of Physics and Astronomy, University of Pittsburgh , 100 Allen Hall, 3941 O’Hara Street, Pittsburgh, PA 15260, USANearly one million light curves from the TESS Year 1 southern hemisphere extracted from Full Field Images with the DIAmante pipeline are processed through the AutoRegressive Planet Search statistical procedure. ARIMA models remove lingering autocorrelated noise, the Transit Comb Filter identifies the strongest periodic signal in the light curve, and a Random Forest machine-learning classifier is trained and applied to identify the best potential candidates. Classifier training sets are based on injections of planetary transit signals, eclipsing binaries, and other variable stars. The optimized classifier has a True Positive Rate of 92.5% and a False Positive Rate of 0.43% from the labeled training set. The result of this DIAmante TESS autoregressive planet search of the southern ecliptic hemisphere analysis is a list of 7377 potential exoplanet candidates. The classifier had a 64% recall rate for previously confirmed exoplanets and a 78% negative recall rate for known False Positives. The completeness map of the injected planetary signals shows high recall rates for planets with 8–30 R _⊕ radii and periods 0.6–13 days and poor completeness for planets with radii <2 R _⊕ or periods <1 day. The list has many False Alarms and False Positives that need to be culled with multifaceted vetting operations (Paper II).https://doi.org/10.3847/1538-3881/ad29f0Exoplanet catalogsExoplanet detection methodsLight curve classificationPeriod searchTime domain astronomyTransits |
| spellingShingle | Elizabeth J. Melton Eric D. Feigelson Marco Montalto Gabriel A. Caceres Andrew W. Rosenswie Cullen S. Abelson DIAmante TESS AutoRegressive Planet Search (DTARPS). I. Analysis of 0.9 Million Light Curves The Astronomical Journal Exoplanet catalogs Exoplanet detection methods Light curve classification Period search Time domain astronomy Transits |
| title | DIAmante TESS AutoRegressive Planet Search (DTARPS). I. Analysis of 0.9 Million Light Curves |
| title_full | DIAmante TESS AutoRegressive Planet Search (DTARPS). I. Analysis of 0.9 Million Light Curves |
| title_fullStr | DIAmante TESS AutoRegressive Planet Search (DTARPS). I. Analysis of 0.9 Million Light Curves |
| title_full_unstemmed | DIAmante TESS AutoRegressive Planet Search (DTARPS). I. Analysis of 0.9 Million Light Curves |
| title_short | DIAmante TESS AutoRegressive Planet Search (DTARPS). I. Analysis of 0.9 Million Light Curves |
| title_sort | diamante tess autoregressive planet search dtarps i analysis of 0 9 million light curves |
| topic | Exoplanet catalogs Exoplanet detection methods Light curve classification Period search Time domain astronomy Transits |
| url | https://doi.org/10.3847/1538-3881/ad29f0 |
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