In This Day and Age: An Empirical Gyrochronology Relation for Partially and Fully Convective Single Field Stars
Gyrochronology, the field of age dating stars using mainly their rotation periods and masses, is ideal for inferring the ages of individual main-sequence stars. However, due to the lack of physical understanding of the complex magnetic fields in stars, gyrochronology relies heavily on empirical cali...
| 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 |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-3881/ad28b9 |
| _version_ | 1797261513999777792 |
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| author | Yuxi(Lucy) Lu Ruth Angus Daniel Foreman-Mackey Soichiro Hattori |
| author_facet | Yuxi(Lucy) Lu Ruth Angus Daniel Foreman-Mackey Soichiro Hattori |
| author_sort | Yuxi(Lucy) Lu |
| collection | DOAJ |
| description | Gyrochronology, the field of age dating stars using mainly their rotation periods and masses, is ideal for inferring the ages of individual main-sequence stars. However, due to the lack of physical understanding of the complex magnetic fields in stars, gyrochronology relies heavily on empirical calibrations that require consistent and reliable stellar age measurements across a wide range of periods and masses. In this paper, we obtain a sample of consistent ages using the gyro-kinematic age-dating method, a technique to calculate the kinematics ages of stars. Using a Gaussian process model conditioned on ages from this sample (∼1–14 Gyr) and known clusters (0.67–3.8 Gyr), we calibrate the first empirical gyrochronology relation that is capable of inferring ages for single, main-sequence stars between 0.67 and 14 Gyr. Cross-validating and testing results suggest our model can infer cluster and asteroseismic ages with an average uncertainty of just over 1 Gyr, and the inferred ages for wide binaries agree within 0.83 Gyr. With this model, we obtain gyrochronology ages for ∼100,000 stars within 1.5 kpc of the Sun with period measurements from Kepler and Zwicky Transient Facility and 384 unique planet host stars. A simple code is provided to infer gyrochronology ages of stars with temperature and period measurements. |
| first_indexed | 2024-04-24T23:42:25Z |
| format | Article |
| id | doaj.art-88f83e226f0d4896984c11e21574a6da |
| institution | Directory Open Access Journal |
| issn | 1538-3881 |
| language | English |
| last_indexed | 2024-04-24T23:42:25Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj.art-88f83e226f0d4896984c11e21574a6da2024-03-15T10:13:21ZengIOP PublishingThe Astronomical Journal1538-38812024-01-01167415910.3847/1538-3881/ad28b9In This Day and Age: An Empirical Gyrochronology Relation for Partially and Fully Convective Single Field StarsYuxi(Lucy) Lu0https://orcid.org/0000-0003-4769-3273Ruth Angus1https://orcid.org/0000-0003-4540-5661Daniel Foreman-Mackey2https://orcid.org/0000-0002-9328-5652Soichiro Hattori3https://orcid.org/0000-0002-0842-863XAmerican Museum of Natural History, Central Park West , Manhattan, NY, USA ; lucylulu12311@gmail.comAmerican Museum of Natural History, Central Park West , Manhattan, NY, USA ; lucylulu12311@gmail.com; Center for Computational Astrophysics, Flatiron Institute , 162 5th Avenue, Manhattan, NY, USACenter for Computational Astrophysics, Flatiron Institute , 162 5th Avenue, Manhattan, NY, USADepartment of Astronomy, Columbia University , 550 West 120th Street, New York, NY, USAGyrochronology, the field of age dating stars using mainly their rotation periods and masses, is ideal for inferring the ages of individual main-sequence stars. However, due to the lack of physical understanding of the complex magnetic fields in stars, gyrochronology relies heavily on empirical calibrations that require consistent and reliable stellar age measurements across a wide range of periods and masses. In this paper, we obtain a sample of consistent ages using the gyro-kinematic age-dating method, a technique to calculate the kinematics ages of stars. Using a Gaussian process model conditioned on ages from this sample (∼1–14 Gyr) and known clusters (0.67–3.8 Gyr), we calibrate the first empirical gyrochronology relation that is capable of inferring ages for single, main-sequence stars between 0.67 and 14 Gyr. Cross-validating and testing results suggest our model can infer cluster and asteroseismic ages with an average uncertainty of just over 1 Gyr, and the inferred ages for wide binaries agree within 0.83 Gyr. With this model, we obtain gyrochronology ages for ∼100,000 stars within 1.5 kpc of the Sun with period measurements from Kepler and Zwicky Transient Facility and 384 unique planet host stars. A simple code is provided to infer gyrochronology ages of stars with temperature and period measurements.https://doi.org/10.3847/1538-3881/ad28b9Stellar agesStellar rotationCatalogsGaussian Processes regressionMain sequence stars |
| spellingShingle | Yuxi(Lucy) Lu Ruth Angus Daniel Foreman-Mackey Soichiro Hattori In This Day and Age: An Empirical Gyrochronology Relation for Partially and Fully Convective Single Field Stars The Astronomical Journal Stellar ages Stellar rotation Catalogs Gaussian Processes regression Main sequence stars |
| title | In This Day and Age: An Empirical Gyrochronology Relation for Partially and Fully Convective Single Field Stars |
| title_full | In This Day and Age: An Empirical Gyrochronology Relation for Partially and Fully Convective Single Field Stars |
| title_fullStr | In This Day and Age: An Empirical Gyrochronology Relation for Partially and Fully Convective Single Field Stars |
| title_full_unstemmed | In This Day and Age: An Empirical Gyrochronology Relation for Partially and Fully Convective Single Field Stars |
| title_short | In This Day and Age: An Empirical Gyrochronology Relation for Partially and Fully Convective Single Field Stars |
| title_sort | in this day and age an empirical gyrochronology relation for partially and fully convective single field stars |
| topic | Stellar ages Stellar rotation Catalogs Gaussian Processes regression Main sequence stars |
| url | https://doi.org/10.3847/1538-3881/ad28b9 |
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