干旱区生态环境知识资源中心(Arid): K2-290: a warm Jupiter and a mini-Neptune in a triple-star system

Arid

DOI	10.1093/mnras/stz139
	K2-290: a warm Jupiter and a mini-Neptune in a triple-star system
	Hjorth, M.1; Justesen, A. B.1; Hirano, T.2; Albrecht, S.1; Gandolfi, D.3; Dai, F.4,5,6; Alonso, R.7; Barragan, O.3; Esposito, M.8; Kuzuhara, M.9,10; Lam, K. W. F.11; Livingston, J. H.12; Montanes-Rodriguez, P.7; Narita, N.7,10,12; Nowak, G.7; Prieto-Arranz, J.7; Redfield, S.13,14; Rodler, F.15; Van Eylen, V.5,6; Winn, J. N.5,6; Antoniciello, G.3; Cabrera, J.16; Cochran, W. D.17,18; Csizmadia, Sz.16; de Leon, J.12; Deeg, H.7,19; Eigmueller, Ph.16; Endl, M.17,18; Erikson, A.16; Fridlund, M.20,21; Grziwa, S.22; Guenther, E.8; Hatzes, A. P.8; Heeren, P.23; Hidalgo, D.7,19; Korth, J.22; Luque, R.7,19; Nespral, D.7,19; Palle, E.7,19; Paetzold, M.22; Persson, C. M.20; Rauer, H.16,24,25; Smith, A. M. S.16; Trifonov, T.26
通讯作者	Hjorth, M.
来源期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
EISSN	1365-2966
出版年	2019
卷号	484 期号:3 页码:3522-3536
英文摘要	We report the discovery of two transiting planets orbiting K2-290 (EPIC 249624646), a bright (V = 11.11) late F-type star residing in a triple-star system. It was observed during Campaign 15 of the K2 mission, and in order to confirm and characterize the system, follow-up spectroscopy and AO imaging were carried out using the FIES, HARPS, HARPS-N, and IRCS instruments. From AO imaging and Gala data we identify two M-dwarf companions at a separation of 113 +/- 2 and 24671(-155)(+177) au. From radial velocities, K2 photometry, and stellar characterization of the host star, we find the inner planet to be a mini-Neptune with a radius of 3.06 +/- 0.16 R-circle plus and an orbital period of P = 9.2 d. The radius of the mini-Neptune suggests that the planet is located above the radius valley, and with an incident flux of F similar to 400 F-circle plus, it lies safely outside the super-Earth desert. The outer warm Jupiter has a mass of 0.774 +/- 0.047 M-J and a radius of 1.006 +/- 0.050 R-J, and orbits the host star every 48.4 d on an orbit with an eccentricity e < 0.241. Its mild eccentricity and mini-Neptune sibling suggest that the warm Jupiter originates from in situ formation or disc migration.
英文关键词	planets and satellites: detection planets and satellites: formation planets and satellites: individual: K2-290 planets and satellites: individual: EPIC 249624646
类型	Article
语种	英语
国家	Denmark ; Japan ; Italy ; USA ; Spain ; Germany ; Chile ; Sweden ; Netherlands
开放获取类型	Green Accepted, Green Submitted, Green Published
收录类别	SCI-E
WOS记录号	WOS:000462410300048
WOS关键词	STELLAR PHOTOMETRY ; HOT ; PLANET ; ECCENTRICITY ; SPECTROGRAPH ; ATMOSPHERES ; EVOLUTION ; MIGRATION ; SATURN ; CORES
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217687
作者单位	1.Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, Ny Munkegade 120, DK-8000 Aarhus C, Denmark; 2.Tokyo Inst Technol, Dept Earth & Planetary Sci, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528551, Japan; 3.Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy; 4.MIT, Dept Phys, Cambridge, MA 02139 USA; 5.MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA; 6.Princeton Univ, Dept Astrophys Sci, 4 Ivy Lane, Princeton, NJ 08544 USA; 7.Inst Astrofis Canarias, C Via Lactea S-N, E-38205 San Cristobal la Laguna, Spain; 8.Thuringer Landessternwarte Tautenberg, Sternwarte 5, D-07778 Tautenburg, Germany; 9.NINS, Astrobiol Ctr, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan; 10.Natl Astron Observ Japan, NINS, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan; 11.Tech Univ Berlin, Zentrum Astron & Astrophys, Hardenbergstr 36, D-10623 Berlin, Germany; 12.Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, Hongo 7-3-1, Tokyo 1130033, Japan; 13.Wesleyan Univ, Astron Dept, Middletown, CT 06459 USA; 14.Wesleyan Univ, Van Vleck Observ, Middletown, CT 06459 USA; 15.European Southern Observ, Alonso de Cordova 3107, Santiago 19001, Chile; 16.German Aerosp Ctr, Inst Planetary Res, Rutherfordstr 2, D-12489 Berlin, Germany; 17.Univ Texas Austin, Dept Astron, 2515 Speedway,Stop C1400, Austin, TX 78712 USA; 18.Univ Texas Austin, McDonald Observ, 2515 Speedway,Stop C1400, Austin, TX 78712 USA; 19.Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain; 20.Chalmers Univ Technol, Onsala Space Observ, Dept Space Earth & Environm, SE-43992 Onsala, Sweden; 21.Leiden Univ, Leiden Observ, NL-2333 CA Leiden, Netherlands; 22.Univ Cologne, Rheinisches Inst Umweltforsch, Aachener Str 209, D-50931 Cologne, Germany; 23.ZAH Landessternwarte Heidelberg, Konigstuhl 12, D-69117 Heidelberg, Germany; 24.FU Berlin, Inst Geol Sci, Malteserstr 74-100, D-12249 Berlin, Germany; 25.TU Berlin, Ctr Astron & Astrophys, Hardenbergstr 36, D-10623 Berlin, Germany; 26.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
推荐引用方式 GB/T 7714	Hjorth, M.,Justesen, A. B.,Hirano, T.,et al. K2-290: a warm Jupiter and a mini-Neptune in a triple-star system[J],2019,484(3):3522-3536.
APA	Hjorth, M..,Justesen, A. B..,Hirano, T..,Albrecht, S..,Gandolfi, D..,...&Trifonov, T..(2019).K2-290: a warm Jupiter and a mini-Neptune in a triple-star system.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,484(3),3522-3536.
MLA	Hjorth, M.,et al."K2-290: a warm Jupiter and a mini-Neptune in a triple-star system".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 484.3(2019):3522-3536.