NAOC Open IR
The Youngest Planet to Have a Spin-Orbit Alignment Measurement AU Mic b
Addison, Brett C.1; Horner, Jonathan1; Wittenmyer, Robert A.1; Heitzmann, Alexis1; Plavchan, Peter2; Wright, Duncan J.1; Nicholson, Belinda A.1,3; Marshall, Jonathan P.1,4; Clark, Jake T.1; Guenther, Maximilian N.5,6; Kane, Stephen R.7; Hirano, Teruyuki8; Wang, Songhu9; Kielkopf, John10; Shporer, Avi5,6; Tinney, C. G.11; Zhang, Hui12; Ballard, Sarah13; Bedding, Timothy14; Bowler, Brendan P.14; Mengel, Matthew W.15; Okumura, Jack15; Gaidos, Eric16; Wang, Xian-Yu17
2021-10-01
Source PublicationASTRONOMICAL JOURNAL
ISSN0004-6256
Volume162Issue:4Pages:11
AbstractWe report measurements of the sky-projected spin-orbit angle for AU Mic b, a Neptune-size planet orbiting a very young (similar to 20 Myr) nearby pre-main-sequence M-dwarf star, which also hosts a bright, edge-on, debris disk. The planet was recently discovered from preliminary analysis of radial-velocity observations and confirmed to be transiting its host star from photometric data from the NASA's TESS mission. We obtained radial-velocity measurements of AU Mic over the course of two partially observable transits and one full transit of planet b from high-resolution spectroscopic observations made with the Minerva-Australis telescope array. Only a marginal detection of the Rossiter-McLaughlin effect signal was obtained from the radial velocities, in part due to AU Mic being an extremely active star and the lack of full transit coverage plus sufficient out-of-transit baseline. As such, a precise determination of the obliquity for AU Mic b is not possible in this study and we find a sky-projected spin-orbit angle of lambda=47(-54)(+26)degrees. This result is consistent with both the planet's orbit being aligned or highly misaligned with the spin axis of its host star. Our measurement independently agrees with, but is far less precise than observations carried out on other instruments around the same time that measure a low-obliquity orbit for the planet. AU Mic is the youngest exoplanetary system for which the projected spin-orbit angle has been measured, making it a key data point in the study of the formation and migration of exoplanets-particularly given that the system is also host to a bright debris disk.
Funding OrganizationAustralian Research Council LIEF Grant ; Australian Research Council LIEF Grant ; Mount Cuba Astronomical Foundation ; Mount Cuba Astronomical Foundation ; University of Southern Queensland ; University of Southern Queensland ; UNSW Australia ; UNSW Australia ; MIT ; MIT ; Nanjing University ; Nanjing University ; George Mason University ; George Mason University ; University of Louisville ; University of Louisville ; University of California Riverside ; University of California Riverside ; University of Florida ; University of Florida ; The University of Texas at Austin ; The University of Texas at Austin ; Ministry of Science and Technology of Taiwan ; Ministry of Science and Technology of Taiwan ; Academia Sinica ; Academia Sinica ; MIT's Kavli Institute ; MIT's Kavli Institute ; Australian Research Council LIEF Grant ; Australian Research Council LIEF Grant ; Mount Cuba Astronomical Foundation ; Mount Cuba Astronomical Foundation ; University of Southern Queensland ; University of Southern Queensland ; UNSW Australia ; UNSW Australia ; MIT ; MIT ; Nanjing University ; Nanjing University ; George Mason University ; George Mason University ; University of Louisville ; University of Louisville ; University of California Riverside ; University of California Riverside ; University of Florida ; University of Florida ; The University of Texas at Austin ; The University of Texas at Austin ; Ministry of Science and Technology of Taiwan ; Ministry of Science and Technology of Taiwan ; Academia Sinica ; Academia Sinica ; MIT's Kavli Institute ; MIT's Kavli Institute ; Australian Research Council LIEF Grant ; Australian Research Council LIEF Grant ; Mount Cuba Astronomical Foundation ; Mount Cuba Astronomical Foundation ; University of Southern Queensland ; University of Southern Queensland ; UNSW Australia ; UNSW Australia ; MIT ; MIT ; Nanjing University ; Nanjing University ; George Mason University ; George Mason University ; University of Louisville ; University of Louisville ; University of California Riverside ; University of California Riverside ; University of Florida ; University of Florida ; The University of Texas at Austin ; The University of Texas at Austin ; Ministry of Science and Technology of Taiwan ; Ministry of Science and Technology of Taiwan ; Academia Sinica ; Academia Sinica ; MIT's Kavli Institute ; MIT's Kavli Institute ; Australian Research Council LIEF Grant ; Australian Research Council LIEF Grant ; Mount Cuba Astronomical Foundation ; Mount Cuba Astronomical Foundation ; University of Southern Queensland ; University of Southern Queensland ; UNSW Australia ; UNSW Australia ; MIT ; MIT ; Nanjing University ; Nanjing University ; George Mason University ; George Mason University ; University of Louisville ; University of Louisville ; University of California Riverside ; University of California Riverside ; University of Florida ; University of Florida ; The University of Texas at Austin ; The University of Texas at Austin ; Ministry of Science and Technology of Taiwan ; Ministry of Science and Technology of Taiwan ; Academia Sinica ; Academia Sinica ; MIT's Kavli Institute ; MIT's Kavli Institute
DOI10.3847/1538-3881/ac1685
WOS KeywordHOT-JUPITER ; GIANT PLANETS ; DEBRIS DISK ; STAR ; MIGRATION ; COMPANION ; SYSTEM ; SCATTERING ; DISCOVERY ; ROTATION
Language英语
Funding ProjectAustralian Research Council LIEF Grant[LE160100001] ; Australian Research Council LIEF Grant[DP180100972] ; Mount Cuba Astronomical Foundation ; University of Southern Queensland ; UNSW Australia ; MIT ; Nanjing University ; George Mason University ; University of Louisville ; University of California Riverside ; University of Florida ; The University of Texas at Austin ; Ministry of Science and Technology of Taiwan[MOST107-2119-M-001-031-MY3] ; Ministry of Science and Technology of Taiwan[MOST109-2112-M-001-036-MY3] ; Academia Sinica[AS-IA-106-M03] ; MIT's Kavli Institute
Funding OrganizationAustralian Research Council LIEF Grant ; Australian Research Council LIEF Grant ; Mount Cuba Astronomical Foundation ; Mount Cuba Astronomical Foundation ; University of Southern Queensland ; University of Southern Queensland ; UNSW Australia ; UNSW Australia ; MIT ; MIT ; Nanjing University ; Nanjing University ; George Mason University ; George Mason University ; University of Louisville ; University of Louisville ; University of California Riverside ; University of California Riverside ; University of Florida ; University of Florida ; The University of Texas at Austin ; The University of Texas at Austin ; Ministry of Science and Technology of Taiwan ; Ministry of Science and Technology of Taiwan ; Academia Sinica ; Academia Sinica ; MIT's Kavli Institute ; MIT's Kavli Institute ; Australian Research Council LIEF Grant ; Australian Research Council LIEF Grant ; Mount Cuba Astronomical Foundation ; Mount Cuba Astronomical Foundation ; University of Southern Queensland ; University of Southern Queensland ; UNSW Australia ; UNSW Australia ; MIT ; MIT ; Nanjing University ; Nanjing University ; George Mason University ; George Mason University ; University of Louisville ; University of Louisville ; University of California Riverside ; University of California Riverside ; University of Florida ; University of Florida ; The University of Texas at Austin ; The University of Texas at Austin ; Ministry of Science and Technology of Taiwan ; Ministry of Science and Technology of Taiwan ; Academia Sinica ; Academia Sinica ; MIT's Kavli Institute ; MIT's Kavli Institute ; Australian Research Council LIEF Grant ; Australian Research Council LIEF Grant ; Mount Cuba Astronomical Foundation ; Mount Cuba Astronomical Foundation ; University of Southern Queensland ; University of Southern Queensland ; UNSW Australia ; UNSW Australia ; MIT ; MIT ; Nanjing University ; Nanjing University ; George Mason University ; George Mason University ; University of Louisville ; University of Louisville ; University of California Riverside ; University of California Riverside ; University of Florida ; University of Florida ; The University of Texas at Austin ; The University of Texas at Austin ; Ministry of Science and Technology of Taiwan ; Ministry of Science and Technology of Taiwan ; Academia Sinica ; Academia Sinica ; MIT's Kavli Institute ; MIT's Kavli Institute ; Australian Research Council LIEF Grant ; Australian Research Council LIEF Grant ; Mount Cuba Astronomical Foundation ; Mount Cuba Astronomical Foundation ; University of Southern Queensland ; University of Southern Queensland ; UNSW Australia ; UNSW Australia ; MIT ; MIT ; Nanjing University ; Nanjing University ; George Mason University ; George Mason University ; University of Louisville ; University of Louisville ; University of California Riverside ; University of California Riverside ; University of Florida ; University of Florida ; The University of Texas at Austin ; The University of Texas at Austin ; Ministry of Science and Technology of Taiwan ; Ministry of Science and Technology of Taiwan ; Academia Sinica ; Academia Sinica ; MIT's Kavli Institute ; MIT's Kavli Institute
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000694702500001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/75557
Collection中国科学院国家天文台
Corresponding AuthorAddison, Brett C.
Affiliation1.Univ Southern Queensland, Ctr Astrophys, USQ Toowoomba, West St, Toowoomba, Qld 4350, Australia
2.George Mason Univ, Dept Phys & Astron, 4400 Univ Dr MS 3F3, Fairfax, VA 22030 USA
3.Univ Oxford, Dept Phys, Subdept Astrophys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England
4.Acad Sinica, Inst Astron & Astrophys, 11F NTU Astron Math Bldg,1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan
5.MIT, Dept Phys, Cambridge, MA 02139 USA
6.MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA
7.Univ Calif Riverside, Dept Earth & Planetary Sci, Riverside, CA 92521 USA
8.Tokyo Inst Technol, Dept Earth & Planetary Sci, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528551, Japan
9.Indiana Univ, Astron Dept, 727 East 3rd St,Swain West 318, Bloomington, IN USA
10.Univ Louisville, Dept Phys & Astron, Louisville, KY 40292 USA
11.UNSW Sydney, Sch Phys, Exoplanetary Sci UNSW, Sydney, NSW 2052, Australia
12.Nanjing Univ, Sch Astron & Space Sci, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210046, Jiangsu, Peoples R China
13.Univ Florida, Dept Astron, 211 Bryant Space Sci Ctr, Gainesville, FL 32611 USA
14.Univ Texas Austin, Dept Astron, Austin, TX 78712 USA
15.Univ Southern Queensland, Ctr Astrophys, West St, Toowoomba, Qld 4350, Australia
16.Univ Hawaii Manoa, Dept Earth Sci, Honolulu, HI 96822 USA
17.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Addison, Brett C.,Horner, Jonathan,Wittenmyer, Robert A.,et al. The Youngest Planet to Have a Spin-Orbit Alignment Measurement AU Mic b[J]. ASTRONOMICAL JOURNAL,2021,162(4):11.
APA Addison, Brett C..,Horner, Jonathan.,Wittenmyer, Robert A..,Heitzmann, Alexis.,Plavchan, Peter.,...&Wang, Xian-Yu.(2021).The Youngest Planet to Have a Spin-Orbit Alignment Measurement AU Mic b.ASTRONOMICAL JOURNAL,162(4),11.
MLA Addison, Brett C.,et al."The Youngest Planet to Have a Spin-Orbit Alignment Measurement AU Mic b".ASTRONOMICAL JOURNAL 162.4(2021):11.
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