干旱区生态环境知识资源中心(Arid): A SOPHIE RV search for giant planets around young nearby stars (YNS): A combination with the HARPS YNS survey

Arid

DOI	10.1051/0004-6361/202039672
	A SOPHIE RV search for giant planets around young nearby stars (YNS): A combination with the HARPS YNS survey
	Grandjean, A.; Lagrange, A-M; Meunier, N.; Rubini, P.; Desidera, S.; Galland, F.; Borgniet, S.; Zicher, N.; Messina, S.; Chauvin, G.; Sterzik, M.; Pantoja, B.
通讯作者	Grandjean, A (corresponding author), Univ Grenoble Alpes, IPAG, CNRS, F-38000 Grenoble, France.
来源期刊	ASTRONOMY & ASTROPHYSICS
ISSN	0004-6361
EISSN	1432-0746
出版年	2021
卷号	650
英文摘要	Context. The search of close (a less than or similar to 5 au) giant planet (GP) companions with radial velocity (RV) around young stars and the estimate of their occurrence rates is important to constrain the migration timescales. Furthermore, this search will allow the giant planet occurrence rates to be computed at all separations via the combination with direct imaging techniques. The RV search around young stars is a challenge as they are generally faster rotators than older stars of similar spectral types and they exhibit signatures of magnetic activity (spots) or pulsation in their RV time series. Specific analyses are necessary to characterize, and possibly correct for, this activity. Aims. Our aim is to search for planets around young nearby stars and to estimate the GP occurrence rates for periods up to 1000 days. Methods. We used the SOPHIE spectrograph on the 1.93 m telescope at the Haute-Provence Observatory to observe 63 A - M young (<400 Myr) stars. We used our Spectroscopic data via Analysis of the Fourier Interspectrum Radial velocities software to compute the RVs and other spectroscopic observables. We then combined this survey with the HARPS YNS survey to compute the companion occurrence rates on a total of 120 young A - M stars. Results. We report one new trend compatible with a planetary companion on HD 109647. We also report HD 105693 and HD 112097 as binaries, and we confirm the binarity of HD 2454, HD 13531, HD 17250 A, HD 28945, HD 39587, HD 131156, HD 142229, HD 186704 A, and HD 195943. We constrained for the first time the orbital parameters of HD 195943 B. We refute the HD 13507 single brown dwarf (BD) companion solution and propose a double BD companion solution. Two GPs were previously reported from this survey in the HD 113337 system. Based on our sample of 120 young stars, we obtain a GP occurrence rate of 1 +2:2 0:3 % for periods lower than 1000 days, and we obtain an upper limit on BD occurrence rate of 0:9+2 0:9% in the same period range. We report a possible lack of close ( P 2 [1; 1000] days) GPs around young FK stars compared to their older counterparts, with a confidence level of 90%.
英文关键词	techniques: radial velocities stars: activity binaries: spectroscopic planetary systems starspots stars: variables: general
类型	Article
语种	英语
开放获取类型	Green Submitted, hybrid
收录类别	SCI-E
WOS记录号	WOS:000660894300001
WOS关键词	F-TYPE STARS ; STELLAR SURFACE-STRUCTURE ; RADIAL-VELOCITY SURVEY ; MAIN-SEQUENCE STARS ; EXTRA-SOLAR PLANETS ; DUSTY DEBRIS DISKS ; BROWN DWARF DESERT ; HOT-JUPITER ; SNOW LINE ; ROTATIONAL VELOCITIES
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
来源机构	University of Oxford
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349603
作者单位	[Grandjean, A.; Lagrange, A-M; Meunier, N.; Galland, F.; Chauvin, G.] Univ Grenoble Alpes, IPAG, CNRS, F-38000 Grenoble, France; [Lagrange, A-M] Univ Paris, Sorbonne Univ, Univ PSL, LESIA,Observ Paris,CNRS, 5 Pl Jules Janssen, F-92195 Meudon, France; [Lagrange, A-M] IMCCE Observ Paris, 77 Ave Denfert Rochereau, F-75014 Paris, France; [Rubini, P.] Pixyl, 5 Ave Grand Sablon, F-38700 La Tronche, France; [Desidera, S.] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy; [Borgniet, S.] CNRS Lesia UMR8109, Observ Paris, Paris, France; [Zicher, N.] Oxford Astrophys, Dept Phys, Denys Wilkinson Bldg, Oxford, England; [Messina, S.] INAF Osservatorio Astrofis Catania, Via Santa Sofia 78, Catania, Italy; [Sterzik, M.] European Southern Observ, Karl Schwarzschild Str 1, D-85748 Garching, Germany; [Pantoja, B.] Univ Chile, Dept Astron, Camino Observ, Santiago, Chile
推荐引用方式 GB/T 7714	Grandjean, A.,Lagrange, A-M,Meunier, N.,et al. A SOPHIE RV search for giant planets around young nearby stars (YNS): A combination with the HARPS YNS survey[J]. University of Oxford,2021,650.
APA	Grandjean, A..,Lagrange, A-M.,Meunier, N..,Rubini, P..,Desidera, S..,...&Pantoja, B..(2021).A SOPHIE RV search for giant planets around young nearby stars (YNS): A combination with the HARPS YNS survey.ASTRONOMY & ASTROPHYSICS,650.
MLA	Grandjean, A.,et al."A SOPHIE RV search for giant planets around young nearby stars (YNS): A combination with the HARPS YNS survey".ASTRONOMY & ASTROPHYSICS 650(2021).