Methods for the detection of stellar rotation periods in individual TESS sectors and results from the Prime mission
| Autor: | Colman, Isabel L., Angus, Ruth, David, Trevor, Curtis, Jason, Hattori, Soichiro, Lu, Yuxi Lucy |
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| Rok vydání: | 2024 |
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| Druh dokumentu: | Working Paper |
| Popis: | For ongoing studies of the role of rotation in stellar evolution, we require large catalogs of rotation periods for testing and refining gyrochronology. While there is a wealth of data from the Kepler and K2 missions, TESS presents both an opportunity and a challenge: despite its all-sky coverage, rotation periods remain hard to detect. We analyzed individual TESS sectors to detect short-period stellar rotation, using only parameters measured from light curves for a robust and unbiased method of evaluating detections. We used random forest classifiers for vetting, trained on a large corpus of period measurements in KELT data from the Oelkers et al. (2018) catalog and using TESS full-frame image light curves generated by eleanor (Feinstein et al. 2019). Finally, using data from the first 26 sectors of TESS, we analyzed 432,704 2-minute cadence single-sector light curves for FGKM dwarfs. We detected 16,800 periods in individual sector light curves, covering 10,909 distinct targets, and we present a catalog of the median period for each target as measured by a Lomb-Scargle periodogram. Comment: 23 pages, 15 figures, accepted for publication in The Astronomical Journal |
| Databáze: | arXiv |
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