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LHS 1815b: The First Thick-disk Planet Detected by TESS

文献类型：期刊论文

作者Gan, Tianjun30,31; Shporer, Avi28,29; Livingston, John H.27; Collins, Karen A.26; Mao, Shude25,30,31; Trani, Alessandro A.27; Gandolfi, Davide24; Hirano, Teruyuki23; Luque, Rafael21,22; Stassun, Keivan G.19,20
刊名ASTRONOMICAL JOURNAL
出版日期2020-04-01
卷号159期号:4页码:12
关键词Astrometric exoplanet detection Astrometry Stellar kinematics Transit photometry Radial velocity
ISSN号0004-6256
DOI10.3847/1538-3881/ab775a
英文摘要We report the first discovery of a thick-disk planet, LHS 1815b (TOI-704b, TIC 260004324), detected in the Transiting Exoplanet Survey Satellite (TESS) survey. LHS 1815b transits a bright (V = 12.19 mag, K = 7.99 mag) and quiet M dwarf located 29.87 0.02 pc away with a mass of 0.502 0.015 M and a radius of 0.501 0.030 R. We validate the planet by combining space- and ground-based photometry, spectroscopy, and imaging. The planet has a radius of 1.088 0.064 R-circle plus with a 3 sigma mass upper limit of 8.7 M-circle plus. We analyze the galactic kinematics and orbit of the host star LHS 1815 and find that it has a large probability (P-thick/P-thin = 6482) to be in the thick disk with a much higher expected maximal height (Z(max) = 1.8 kpc) above the Galactic plane compared with other TESS planet host stars. Future studies of the interior structure and atmospheric properties of planets in such systems using, for example, the upcoming James Webb Space Telescope, can investigate the differences in formation efficiency and evolution for planetary systems between different Galactic components (thick disks, thin disks, and halo).
WOS关键词ERROR-CORRECTION ; GALACTIC THIN ; STARS ; STELLAR ; LIGHT ; PARAMETERS ; SEARCH ; TRENDS ; DWARF
资助项目NASA's Science Mission directorate ; National Science Foundation of China[11390372] ; National Science Foundation of China[11761131004] ; John Templeton Foundation ; JSPS KAKENHI[17F17764] ; JSPS KAKENHI[17H06360] ; Dunlap Fellowship at the Dunlap Institute for Astronomy Astrophysics ; University of Toronto ; NASA Exoplanet Exploration Program ; FONDECYT[3180063] ; FONDECYT[11181295]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000521372000001
出版者IOP PUBLISHING LTD
资助机构NASA's Science Mission directorate ; NASA's Science Mission directorate ; National Science Foundation of China ; National Science Foundation of China ; John Templeton Foundation ; John Templeton Foundation ; JSPS KAKENHI ; JSPS KAKENHI ; Dunlap Fellowship at the Dunlap Institute for Astronomy Astrophysics ; Dunlap Fellowship at the Dunlap Institute for Astronomy Astrophysics ; University of Toronto ; University of Toronto ; NASA Exoplanet Exploration Program ; NASA Exoplanet Exploration Program ; FONDECYT ; FONDECYT ; NASA's Science Mission directorate ; NASA's Science Mission directorate ; National Science Foundation of China ; National Science Foundation of China ; John Templeton Foundation ; John Templeton Foundation ; JSPS KAKENHI ; JSPS KAKENHI ; Dunlap Fellowship at the Dunlap Institute for Astronomy Astrophysics ; Dunlap Fellowship at the Dunlap Institute for Astronomy Astrophysics ; University of Toronto ; University of Toronto ; NASA Exoplanet Exploration Program ; NASA Exoplanet Exploration Program ; FONDECYT ; FONDECYT ; NASA's Science Mission directorate ; NASA's Science Mission directorate ; National Science Foundation of China ; National Science Foundation of China ; John Templeton Foundation ; John Templeton Foundation ; JSPS KAKENHI ; JSPS KAKENHI ; Dunlap Fellowship at the Dunlap Institute for Astronomy Astrophysics ; Dunlap Fellowship at the Dunlap Institute for Astronomy Astrophysics ; University of Toronto ; University of Toronto ; NASA Exoplanet Exploration Program ; NASA Exoplanet Exploration Program ; FONDECYT ; FONDECYT ; NASA's Science Mission directorate ; NASA's Science Mission directorate ; National Science Foundation of China ; National Science Foundation of China ; John Templeton Foundation ; John Templeton Foundation ; JSPS KAKENHI ; JSPS KAKENHI ; Dunlap Fellowship at the Dunlap Institute for Astronomy Astrophysics ; Dunlap Fellowship at the Dunlap Institute for Astronomy Astrophysics ; University of Toronto ; University of Toronto ; NASA Exoplanet Exploration Program ; NASA Exoplanet Exploration Program ; FONDECYT ; FONDECYT
源URL[http://ir.bao.ac.cn/handle/114a11/55318]  
专题中国科学院国家天文台
通讯作者Gan, Tianjun
作者单位1.Cerro Tololo Interamer Observ, Casilla 603, La Serena, Chile
2.Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA
3.Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France
4.Univ Catolica Santisima Concepcion, Dept Matemat & Fis Aplicadas, Alonso Rivera 2850, Concepcion, Chile
5.Swarthmore Coll, Dept Phys & Astron, Swarthmore, PA 19081 USA
6.Queen Mary Univ London, Sch Phys & Astron, 327 Mile End Rd, London E1 4NS, England
7.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
8.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
9.MIT, Dept Aeronaut & Astronaut, 77 Massachusetts Ave, Cambridge, MA 02139 USA
10.Princeton Univ, Dept Astrophys Sci, 4 Ivy Lane, Princeton, NJ 08544 USA
推荐引用方式
GB/T 7714		 Gan, Tianjun,Shporer, Avi,Livingston, John H.,et al. LHS 1815b: The First Thick-disk Planet Detected by TESS[J]. ASTRONOMICAL JOURNAL,2020,159(4):12.
APA Gan, Tianjun.,Shporer, Avi.,Livingston, John H..,Collins, Karen A..,Mao, Shude.,...&Rojas-Ayala, Barbara.(2020).LHS 1815b: The First Thick-disk Planet Detected by TESS.ASTRONOMICAL JOURNAL,159(4),12.
MLA Gan, Tianjun,et al."LHS 1815b: The First Thick-disk Planet Detected by TESS".ASTRONOMICAL JOURNAL 159.4(2020):12.

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