Academic Journal
NEID Reveals That the Young Warm Neptune TOI-2076 b Has a Low Obliquity
| العنوان: | NEID Reveals That the Young Warm Neptune TOI-2076 b Has a Low Obliquity |
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| المؤلفون: | Frazier, R.C., Stefánsson, G., Mahadevan, S., Yee, S.W., Cañas, C.I., Winn, J.N., Luhn, J., Dai, F., Doyle, L., Cegla, H., Kanodia, S., Robertson, P., Wisniewski, J., Bender, C.F., Dong, J., Gupta, A.F., Halverson, S., Hawley, S., Hebb, L., Holcomb, R., Kowalski, A., Libby-Roberts, J., Lin, A.S.J., McElwain, M.W., Ninan, J.P., Petrovich, C., Roy, A., Schwab, C., Terrien, R.C., Wright, J.T. |
| المساهمون: | Steward Observatory, University of Arizona |
| المصدر: | Astrophysical Journal Letters |
| بيانات النشر: | American Astronomical Society |
| سنة النشر: | 2023 |
| المجموعة: | The University of Arizona: UA Campus Repository |
| الوصف: | TOI-2076 b is a sub-Neptune-sized planet (R = 2.39 ± 0.10 R ⊕) that transits a young (204 ± 50 MYr) bright (V = 9.2) K-dwarf hosting a system of three transiting planets. Using spectroscopic observations obtained with the NEID spectrograph on the WIYN 3.5 m Telescope, we model the Rossiter-McLaughlin effect of TOI-2076 b, and derive a sky-projected obliquity of λ = − 3 − 15 + 16 ° . Using the size of the star (R = 0.775 ± 0.015 R ⊙), and the stellar rotation period (P rot = 7.27 ± 0.23 days), we estimate an obliquity of ψ = 18 − 9 + 10 ° (ψ < 34° at 95% confidence), demonstrating that TOI-2076 b is in a well-aligned orbit. Simultaneous diffuser-assisted photometry from the 3.5 m telescope at Apache Point Observatory rules out flares during the transit. TOI-2076 b joins a small but growing sample of young planets in compact multi-planet systems with well-aligned orbits, and is the fourth planet with an age ≲300 Myr in a multi-transiting system with an obliquity measurement. The low obliquity of TOI-2076 b and the presence of transit timing variations in the system suggest the TOI-2076 system likely formed via convergent disk migration in an initially well-aligned disk. © 2023. The Author(s). Published by the American Astronomical Society. ; Open access journal ; This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2041-8205 |
| Relation: | Robert C. Frazier et al 2023 ApJL 944 L41; http://hdl.handle.net/10150/673454; Astrophysical Journal Letters |
| DOI: | 10.3847/2041-8213/acba18 |
| الاتاحة: | http://hdl.handle.net/10150/673454 https://doi.org/10.3847/2041-8213/acba18 |
| Rights: | © 2023. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. ; https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.EE9CEA60 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 20418205 |
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| DOI: | 10.3847/2041-8213/acba18 |