Examining the Rotation Period Distribution of the 40 Myr Tucana–Horologium Association with TESS
The Tucana–Horologium association (Tuc-Hor) is a 40 Myr old moving group in the southern sky. In this work, we measure the rotation periods of 313 Tuc-Hor objects with TESS light curves derived from TESS full-frame images and membership lists driven by Gaia EDR3 kinematics and known youth indicators...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/acb055 |
| _version_ | 1797701239159390208 |
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| author | Mark Popinchalk Jacqueline K. Faherty Jason L. Curtis Jonathan Gagné Daniella C. Bardalez Gagliuffi Johanna M. Vos Andrew Ayala Lisseth Gonzales Rocio Kiman |
| author_facet | Mark Popinchalk Jacqueline K. Faherty Jason L. Curtis Jonathan Gagné Daniella C. Bardalez Gagliuffi Johanna M. Vos Andrew Ayala Lisseth Gonzales Rocio Kiman |
| author_sort | Mark Popinchalk |
| collection | DOAJ |
| description | The Tucana–Horologium association (Tuc-Hor) is a 40 Myr old moving group in the southern sky. In this work, we measure the rotation periods of 313 Tuc-Hor objects with TESS light curves derived from TESS full-frame images and membership lists driven by Gaia EDR3 kinematics and known youth indicators. We recover a period for 81.4% of the sample and report 255 rotation periods for Tuc-Hor objects. From these objects we identify 11 candidate binaries based on multiple periodic signals or outlier Gaia DR2 and EDR3 renormalized unit weight error values. We also identify three new complex rotators (rapidly rotating M dwarf objects with intricate light-curve morphology) within our sample. Along with the six previously known complex rotators that belong to Tuc-Hor, we compare their light-curve morphology between TESS Cycle 1 and Cycle 3 and find that they change substantially. Furthermore, we provide context for the entire Tuc-Hor rotation sample by describing the rotation period distributions alongside other youth indicators such as H α and Li equivalent width, as well as near-ultraviolet and X-ray flux. We find that measuring rotation periods with TESS is a fast and effective means to confirm members in young moving groups. |
| first_indexed | 2024-03-12T04:32:36Z |
| format | Article |
| id | doaj.art-2d8be6e95d3c4a39b2c86aa0e5b6918d |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T04:32:36Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-2d8be6e95d3c4a39b2c86aa0e5b6918d2023-09-03T09:58:20ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-01945211410.3847/1538-4357/acb055Examining the Rotation Period Distribution of the 40 Myr Tucana–Horologium Association with TESSMark Popinchalk0https://orcid.org/0000-0001-9482-7794Jacqueline K. Faherty1https://orcid.org/0000-0001-6251-0573Jason L. Curtis2https://orcid.org/0000-0002-2792-134XJonathan Gagné3https://orcid.org/0000-0002-2592-9612Daniella C. Bardalez Gagliuffi4https://orcid.org/0000-0001-8170-7072Johanna M. Vos5https://orcid.org/0000-0003-0489-1528Andrew Ayala6Lisseth Gonzales7Rocio Kiman8https://orcid.org/0000-0003-2102-3159Department of Astrophysics, American Museum of Natural History , Central Park West at 79th Street, New York, NY 10034, USA ; popinchalkmark@gmail.com; Physics, The Graduate Center, City University of New York , New York, NY 10016, USA; Department of Physics and Astronomy, Hunter College, City University of New York , 695 Park Avenue, New York, NY 10065, USADepartment of Astrophysics, American Museum of Natural History , Central Park West at 79th Street, New York, NY 10034, USA ; popinchalkmark@gmail.comDepartment of Astronomy, Columbia University , 550 West 120th Street, New York, NY 10027, USAPlanétarium Rio Tinto Alcan , Espace pour la Vie, 4801 av. Pierre-de Coubertin, Montréal, QC H1V 3V4, Canada; Institute for Research on Exoplanets, Université de Montréal , Département de Physique, C.P. 6128 Succ. Centre-ville, Montréal, QC H3C 3J7, CanadaDepartment of Astrophysics, American Museum of Natural History , Central Park West at 79th Street, New York, NY 10034, USA ; popinchalkmark@gmail.com; Department of Physics & Astronomy, Amherst College , 25 East Drive, Amherst, MA 01003, USADepartment of Astrophysics, American Museum of Natural History , Central Park West at 79th Street, New York, NY 10034, USA ; popinchalkmark@gmail.comDepartment of Astrophysics, American Museum of Natural History , Central Park West at 79th Street, New York, NY 10034, USA ; popinchalkmark@gmail.comDepartment of Astrophysics, American Museum of Natural History , Central Park West at 79th Street, New York, NY 10034, USA ; popinchalkmark@gmail.comKavli Institute for Theoretical Physics, University of California , Santa Barbara, CA 93106, USAThe Tucana–Horologium association (Tuc-Hor) is a 40 Myr old moving group in the southern sky. In this work, we measure the rotation periods of 313 Tuc-Hor objects with TESS light curves derived from TESS full-frame images and membership lists driven by Gaia EDR3 kinematics and known youth indicators. We recover a period for 81.4% of the sample and report 255 rotation periods for Tuc-Hor objects. From these objects we identify 11 candidate binaries based on multiple periodic signals or outlier Gaia DR2 and EDR3 renormalized unit weight error values. We also identify three new complex rotators (rapidly rotating M dwarf objects with intricate light-curve morphology) within our sample. Along with the six previously known complex rotators that belong to Tuc-Hor, we compare their light-curve morphology between TESS Cycle 1 and Cycle 3 and find that they change substantially. Furthermore, we provide context for the entire Tuc-Hor rotation sample by describing the rotation period distributions alongside other youth indicators such as H α and Li equivalent width, as well as near-ultraviolet and X-ray flux. We find that measuring rotation periods with TESS is a fast and effective means to confirm members in young moving groups.https://doi.org/10.3847/1538-4357/acb055Stellar rotationM dwarf starsLight curvesYoung stellar objectsYoung star clusters |
| spellingShingle | Mark Popinchalk Jacqueline K. Faherty Jason L. Curtis Jonathan Gagné Daniella C. Bardalez Gagliuffi Johanna M. Vos Andrew Ayala Lisseth Gonzales Rocio Kiman Examining the Rotation Period Distribution of the 40 Myr Tucana–Horologium Association with TESS The Astrophysical Journal Stellar rotation M dwarf stars Light curves Young stellar objects Young star clusters |
| title | Examining the Rotation Period Distribution of the 40 Myr Tucana–Horologium Association with TESS |
| title_full | Examining the Rotation Period Distribution of the 40 Myr Tucana–Horologium Association with TESS |
| title_fullStr | Examining the Rotation Period Distribution of the 40 Myr Tucana–Horologium Association with TESS |
| title_full_unstemmed | Examining the Rotation Period Distribution of the 40 Myr Tucana–Horologium Association with TESS |
| title_short | Examining the Rotation Period Distribution of the 40 Myr Tucana–Horologium Association with TESS |
| title_sort | examining the rotation period distribution of the 40 myr tucana horologium association with tess |
| topic | Stellar rotation M dwarf stars Light curves Young stellar objects Young star clusters |
| url | https://doi.org/10.3847/1538-4357/acb055 |
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