干旱区生态环境知识资源中心(Arid): Detection and characterisation of 54 massive companions with the SOPHIE spectrograph Seven new brown dwarfs and constraints on the brown dwarf desert

Arid

DOI	10.1051/0004-6361/201935113
	Detection and characterisation of 54 massive companions with the SOPHIE spectrograph Seven new brown dwarfs and constraints on the brown dwarf desert
	Kiefer, F.1; Hebrard, G.1,2; Sahlmann, J.3; Sousa, S. G.4,5; Forveille, T.6; Santos, N.4,5; Mayor, M.7; Deleuil, M.8; Wilson, P. A.1,9; Dalal, S.1; Diaz, R. F.10,11; Henry, G. W.12; Hagelberg, J.13; Hobson, M. J.8; Demangeon, O.4; Bourrier, V.7; Delfosse, X.6; Arnold, L.2; Astudillo-Defru, N.14; Beuzit, J. -L.8; Boisse, I.8; Bonfils, X.6; Borgniet, S.15; Bouchy, F.7; Courcol, B.7; Ehrenreich, D.7; Hara, N.7; Lagrange, A. -M.6; Lovis, C.7; Montagnier, G.1,2; Moutou, C.8; Pepe, F.7; Perrier, C.6; Rey, J.16; Santerne, A.8; Segransan, D.7; Udry, S.7; Vidal-Madjar, A.1
通讯作者	Kiefer, F.
来源期刊	ASTRONOMY & ASTROPHYSICS
ISSN	0004-6361
EISSN	1432-0746
出版年	2019
卷号	631
英文摘要	Context. Brown dwarfs (BD) are substellar objects intermediate between planets and stars with masses of similar to 13-80 M-J. While isolated BDs are most likely produced by gravitational collapse in molecular clouds down to masses of a few M-J, a non-negligible fraction of low-mass companions might be formed through the planet-formation channel in protoplanetary discs. The upper mass limit of objects formed within discs is still observationally unknown, the main reason being the strong dearth of BD companions at orbital periods shorter than 10 yr, also known as the BD desert. Aims. To address this question, we aim at determining the best statistics of companions within the 10-100 M-J mass regime and located closer than similar to 10 au to the primary star, while minimising observation and selection bias. Methods. We made extensive use of the radial velocity (RV) surveys of northern hemisphere FGK stars within 60 pc of the Sun, performed with the SOPHIE spectrograph at the Observatoire de Haute-Provence. We derived the Keplerian solutions of the RV variations of 54 sources. Public astrometric data of the HIPPARCOS and Gaia missions allowed us to constrain the masses of the companions for most sources. We introduce GASTON, a new method to derive inclination combining RVs and Keplerian and astrometric excess noise from Gaia DR1. Results. We report the discovery of 12 new BD candidates. For five of them, additional astrometric data led to a revision of their mass in the M-dwarf regime. Among the seven remaining objects, four are confirmed BD companions, and three others are likely also in this mass regime. Moreover, we report the detection of 42 M-dwarfs within the range of 90 M-J-0.52 M-circle dot. The resulting M sin i-P distribution of BD candidates shows a clear drop in the detection rate below 80-day orbital period. Above that limit, the BD desert appears rather wet, with a uniform distribution of the M sin i. We derive a minimum BD-detection frequency around Solar-like stars of 2.0 +/- 0.5%.
英文关键词	brown dwarfs binaries: spectroscopic techniques: radial velocities methods: observational methods: numerical
类型	Article
语种	英语
国家	France ; USA ; Portugal ; Switzerland ; England ; Argentina ; Chile
开放获取类型	Green Submitted, hybrid
收录类别	SCI-E
WOS记录号	WOS:000499083000001
WOS关键词	PHOTOELECTRIC RADIAL-VELOCITIES ; SPECTROSCOPIC BINARY ORBITS ; EXTRA-SOLAR PLANETS ; CORALIE SURVEY ; GIANT PLANETS ; STARS ; STELLAR ; EVOLUTION ; VALIDATION ; COMPONENTS
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
EI主题词	2019-11-05
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310755
作者单位	1.Sorbonne Univ, CNRS, UMR 7095, Inst Astrophys Paris, 98 Bis Bd Arago, F-75014 Paris, France; 2.Univ Aix Marseille, CNRS, Observ Haute Provence, F-04870 St Michel Lobservatorie, France; 3.Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA; 4.Univ Porto, Inst Astrofis & Ciencias Espaco, CAUP, Rua Estrelas, P-4150762 Porto, Portugal; 5.Univ Porto, Fac Ciencias, Dept Fis & Astron, Rua Campo Alegre, P-4169007 Porto, Portugal; 6.Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France; 7.Univ Geneva, Observ Astron, 51 Chemin Maillettes, CH-1290 Versoix, Switzerland; 8.Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France; 9.Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England; 10.Univ Buenos Aires, Fac Ciencias Exactas & Nat, Buenos Aires, DF, Argentina; 11.Univ Buenos Aires, CONICET, IAFE, Buenos Aires, DF, Argentina; 12.Tennessee State Univ, Ctr Excellence Informat Syst, Nashville, TN 37209 USA; 13.Swiss Fed Inst Technol, Inst Particle Phys & Astrophys, CH-8093 Zurich, Switzerland; 14.Univ Catolica Santisima Concepcion, Dept Matemat & Fis Aplicadas, Concepcion 2850, Chile; 15.Univ Paris, Sorbonne Univ, Univ PSL, LESIA,Observ Paris,CNRS, 5 Pl Jules Janssen, F-92195 Meudon, France; 16.Carnegie Inst Sci, Las Campanas Observ, La Serena 601, Chile
推荐引用方式 GB/T 7714	Kiefer, F.,Hebrard, G.,Sahlmann, J.,et al. Detection and characterisation of 54 massive companions with the SOPHIE spectrograph Seven new brown dwarfs and constraints on the brown dwarf desert[J],2019,631.
APA	Kiefer, F..,Hebrard, G..,Sahlmann, J..,Sousa, S. G..,Forveille, T..,...&Vidal-Madjar, A..(2019).Detection and characterisation of 54 massive companions with the SOPHIE spectrograph Seven new brown dwarfs and constraints on the brown dwarf desert.ASTRONOMY & ASTROPHYSICS,631.
MLA	Kiefer, F.,et al."Detection and characterisation of 54 massive companions with the SOPHIE spectrograph Seven new brown dwarfs and constraints on the brown dwarf desert".ASTRONOMY & ASTROPHYSICS 631(2019).