Revisiting the Full Sets of Orbital Parameters for the XO-3 System: No Evidence for Temporal Variation of the Spin–Orbit Angle
Article
Article Title | Revisiting the Full Sets of Orbital Parameters for the XO-3 System: No Evidence for Temporal Variation of the Spin–Orbit Angle |
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ERA Journal ID | 1048 |
Article Category | Article |
Authors | Worku, Keduse, Wang, Songhu, Burt, Jennifer, Rice, Malena, Wang, Xian-Yu, Wang, Yong-Hao, Vogt, Steven S., Butler, R. Paul, Addison, Brett, Holden, Brad, Peng, Xi-Yan, Wu, Zhen-Yu, Zhou, Xu, Liu, Hui-Gen, Zhang, Hui, Zhou, Ji-Lin and Laughlin, Gregory |
Journal Title | The Astronomical Journal |
Journal Citation | 163 (4), pp. 1-12 |
Article Number | 158 |
Number of Pages | 12 |
Year | 2022 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0004-6256 |
1538-3881 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-3881/ac4e1a |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-3881/ac4e1a |
Abstract | We present 12 new transit light curves and 16 new out-of-transit radial-velocity measurements for the XO-3 system. By modeling our newly collected measurements together with archival photometric and Doppler velocimetric data, we confirmed the unusual configuration of the XO-3 system, which contains a massive planet ( MP=11.92-0.63+0.59MJ ) on a relatively eccentric ( e=0.2853-0.0026+0.0027 ) and short-period (3.19152 ± 0.00145 day) orbit around a massive star ( M∗=1.219-0.095+0.090Mo˙). Furthermore, we find no strong evidence for a temporal change of either Vsini∗ (and by extension, the stellar spin vector of XO-3), or the transit profile (and thus orbital angular momentum vector of XO-3b). We conclude that the discrepancy in previous Rossiter-McLaughlin measurements (70.0° ± 15.0°; Hébrard et al. 2008; 37.3° ± 3.7°; Winn et al. 2009; 37.3° ± 3.0°; Hirano et al. 2011) may have stemmed from systematic noise sources. |
Keywords | Exoplanets (498) |
Contains Sensitive Content | Does not contain sensitive content |
Funder | National Science Foundation |
Byline Affiliations | Yale University, United States |
Indiana University, United States | |
California Institute of Technology (Caltech), United States | |
Chinese Academy of Sciences, China | |
University of Chinese Academy of Sciences, China | |
Sun Yat-sen University, China | |
University of California, United States | |
Carnegie Institution for Science, United States | |
Centre for Astrophysics (Research) | |
Nanjing University of Modern Astronomy and Astrophysics, China |
https://research.usq.edu.au/item/w73z9/revisiting-the-full-sets-of-orbital-parameters-for-the-xo-3-system-no-evidence-for-temporal-variation-of-the-spin-orbit-angle
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