A Multi-planet System Transiting the V = 9 Rapidly Rotating F-Star HD 106315
Article
Article Title | A Multi-planet System Transiting the V = 9 Rapidly Rotating F-Star HD 106315 |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Rodriguez, Joseph E. (Author), Zhou, George (Author), Vanderburg, Andrew (Author), Eastman, Jason D. (Author), Kreidberg, Laura (Author), Cargile, Phillip A. (Author), Bieryla, Allyson (Author), Latham, David W. (Author), Irwin, Jonathan (Author), Mayo, Andrew W. (Author), Calkins, Michael L. (Author), Esquerdo, Gilbert A. (Author) and Mink, Jessica (Author) |
Journal Title | The Astronomical Journal |
Journal Citation | 153 (6), pp. 1-9 |
Article Number | 256 |
Number of Pages | 9 |
Year | 2017 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/aa6dfb |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/aa6dfb |
Abstract | We report the discovery of a multi-planet system orbiting HD 106315, a rapidly rotating mid F-type star, using data from the K2 mission. HD 106315 hosts a 2.51 ± 0.12 R ⊕ sub-Neptune in a 9.5-day orbit and a super-Neptune in a 21-day orbit. The projected rotational velocity of HD 106315 (12.9 km s-1) likely precludes precise measurements of the planets' masses but could enable a measurement of the sky-projected spin-orbit obliquity for the outer planet via Doppler tomography. The eccentricities of both planets were constrained to be consistent with 0, following a global modeling of the system that includes a Gaia distance and dynamical arguments. The HD 106315 system is one of few multi-planet systems hosting a Neptune-sized planet for which orbital obliquity measurements are possible, making it an excellent test-case for formation mechanisms of warm-Neptunian systems. The brightness of the host star also makes HD 106315 c a candidate for future transmission spectroscopic follow-up studies. |
Keywords | planetary systems; planets and satellites: detection; stars: individual (HD 106315); Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Solar and Stellar Astrophysics |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Center for Astrophysics Harvard and Smithsonian, United States |
https://research.usq.edu.au/item/q6x61/a-multi-planet-system-transiting-the-v-9-rapidly-rotating-f-star-hd-106315
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