The Aligned Orbit of WASP-148b, the only Known Hot Jupiter with a nearby Warm Jupiter Companion, from NEID and HIRES
Article
Article Title | The Aligned Orbit of WASP-148b, the only Known Hot Jupiter with a nearby Warm Jupiter Companion, from NEID and HIRES |
---|---|
ERA Journal ID | 45091 |
Article Category | Article |
Authors | Wang, Xian-Yu, Rice, Malena, Wang, Songhu, Pu, Bonan, Stefánsson, Gudmundur, Mahadevan, Suvrath, Radzom, Brandon, Giacalone, Steven, Wu, Zhen-Yu, Esposito, Thomas M., Dalba, Paul A., Avsar, Arin, Holden, Bradford, Skiff, Brian, Polakis, Tom, Voeller, Kevin, Logsdon, Sarah E., Klusmeyer, Jessica, Schweiker, Heidi, Wu, Dong-Hong, Beard, Corey, Dai, Fei, Lubin, Jack, Weiss, Lauren M., Bender, Chad F., Blake, Cullen H., Dressing, Courtney D., Halverson, Samuel, Hearty, Fred, Howard, Andrew W., Huber, Daniel, Isaacson, Howard, Jackman, James A. G., Llama, Jeo, McElwain, Michael W., Rajagopal, Jayadev, Roy, Arpita, Robertson, Paul, Schwab, Christian, Shkolnik, Evgenya L., Wright, Jason T. and Laughlin, Gregory |
Journal Title | The Astrophysical Journal Letters |
Journal Citation | 926 (2) |
Article Number | L8 |
Number of Pages | 10 |
Year | 2022 |
Publisher | IOP Publishing |
ISSN | 2041-8205 |
2041-8213 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/2041-8213/ac4f44 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/2041-8213/ac4f44 |
Abstract | We present spectroscopic measurements of the Rossiter–McLaughlin effect for WASP-148b, the only known hot Jupiter with a nearby warm-Jupiter companion, from the WIYN/NEID and Keck/HIRES instruments. This is one of the first scientific results reported from the newly commissioned NEID spectrograph, as well as the second obliquity constraint for a hot Jupiter system with a close-in companion, after WASP-47. WASP-148b is consistent with being in alignment with the sky-projected spin axis of the host star, with $\lambda =-8\buildrel{\circ}\over{.} {2}_{-9\buildrel{\circ}\over{.} \,7}^{+8\buildrel{\circ}\over{.} \,7}$. The low obliquity observed in the WASP-148 system is consistent with the orderly-alignment configuration of most compact multi-planet systems around cool stars with obliquity constraints, including our solar system, and may point to an early history for these well-organized systems in which migration and accretion occurred in isolation, with relatively little disturbance. By contrast, previous results have indicated that high-mass and hot stars appear to more commonly host a wide range of misaligned planets: not only single hot Jupiters, but also compact systems with multiple super-Earths. We suggest that, to account for the high rate of spin–orbit misalignments in both compact multi-planet and isolated-hot-Jupiter systems orbiting high-mass and hot stars, spin–orbit misalignments may be caused by distant giant planet perturbers, which are most common around these stellar types. |
Keywords | Star-planet interactions; Planetary alignment; Exoplanet dynamics; Exoplanets |
ANZSRC Field of Research 2020 | 5101. Astronomical sciences |
Byline Affiliations | Chinese Academy of Sciences, China |
Yale University, United States | |
Indiana University Bloomington, United States | |
Cornell University, United States | |
Princeton University, United States | |
Pennsylvania State University, United States | |
University of California Berkeley, United States | |
SETI Institute, United States | |
Unistellar, France | |
University of California, United States | |
Lowell Observatory, United States | |
Garden Grove High School, United States | |
NSF's National Optical Infrared Astronomy Research Laboratory (NOIRLab), United States | |
Anhui Normal University, China | |
Division of Geological and Planetary Sciences, United States | |
University of Notre Dame, United States | |
University of Arizona, United States | |
University of Pennsylvania, United States | |
California Institute of Technology (Caltech), United States | |
University of Hawaii, United States | |
Centre for Astrophysics | |
Arizona State University, United States | |
NASA Goddard Space Flight Center, United States | |
Space Telescope Science Institute, United States | |
Johns Hopkins University, United States | |
Macquarie University |
https://research.usq.edu.au/item/z02xv/the-aligned-orbit-of-wasp-148b-the-only-known-hot-jupiter-with-a-nearby-warm-jupiter-companion-from-neid-and-hires
Download files
32
total views23
total downloads0
views this month4
downloads this month