A Well-aligned Orbit for the 45 Myr-old Transiting Neptune DS Tuc Ab
Article
Article Title | A Well-aligned Orbit for the 45 Myr-old Transiting Neptune DS Tuc Ab |
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ERA Journal ID | 45091 |
Article Category | Article |
Authors | Zhou, G. (Author), Winn, J. N. (Author), Newton, E. R. (Author), Quinn, S. N. (Author), Rodriguez, J. E. (Author), Mann, A. W. (Author), Rizzuto, A. C. (Author), Vanderburg, A. M. (Author), Huang, C. X. (Author), Latham, D. W. (Author), Teske, J. K. (Author), Wang, S. (Author), Shectman, S. A. (Author), Butler, R. P. (Author), Crane, J. D. (Author), Thompson, I. (Author), Henry, T. J. (Author), Paredes, L. A. (Author), Jao, W. C. (Author), James, H. S. (Author) and Hinojosa, R. (Author) |
Journal Title | The Astrophysical Journal Letters |
Journal Citation | 892 (2), pp. 1-8 |
Article Number | L21 |
Number of Pages | 8 |
Year | 2020 |
Publisher | IOP Publishing |
Place of Publication | United Kingdom |
ISSN | 2041-8205 |
2041-8213 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/2041-8213/ab7d3c |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/2041-8213/ab7d3c |
Abstract | DS Tuc Ab is a Neptune-sized planet that orbits around a G star in the 45 Myr old Tucana-Horologium moving group. Here, we report the measurement of the sky-projected angle between the stellar spin axis and the planet's orbital axis, based on the observation of the Rossiter-McLaughlin effect during three separate planetary transits. The orbit appears to be well aligned with the equator of the host star, with a projected obliquity of. In addition to the distortions in the stellar absorption lines due to the transiting planet, we observed variations that we attribute to large starspots, with angular sizes of tens of degrees. The technique that we have developed for simultaneous modeling of starspots and the planet-induced distortions may be useful in other observations of planets around active stars. |
Keywords | 491; 490; 1582; 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 |
Princeton University, United States | |
Dartmouth College, United States | |
University of North Carolina, United States | |
University of Texas at Austin, United States | |
Massachusetts Institute of Technology, United States | |
Carnegie Institution of Washington, United States | |
Carnegie Observatories Pasadena, United States | |
United States Army Corps of Engineers Regional Economic Systems Institute, United States | |
Georgia State University, United States | |
Cerro Tololo Inter-American Observatory, Chile |
https://research.usq.edu.au/item/q6x80/a-well-aligned-orbit-for-the-45-myr-old-transiting-neptune-ds-tuc-ab
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