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High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP) I. Lucky imaging observations of 101 systems in the southern hemisphere
Evans, D. F.1; Southworth, J.1; Maxted, P. F. L.1; Skottfelt, J.2,3; Hundertmark, M.3; Jorgensen, U. G.3; Dominik, M.4; Alsubai, K. A.5; Andersen, M. I.6; Bozza, V.7,8; Bramich, D. M.5; Burgdorf, M. J.9; Ciceri, S.10; D'Ago, G.11; Jaimes, R. Figuera4,12; Gu SH(顾盛宏)13,14; Haugbolle, T.3; Hinse, T. C.15; Juncher, D.3; Kains, N.16; Kerins, E.17; Korhonen, H.3,18; Kuffmeier, M.3; Mancini, L.10; Peixinho, N.19,20; Popovas, A.3; Rabus, M.10,21; Rahvar, S.22; Schmidt, R. W.23; Snodgrass, C.24; Starkey, D.4; Surdej, J.25; Tronsgaard, R.26; von Essen, C.26; Wang YB(王夷博)13,14; Wertz, O.25
Source PublicationASTRONOMY & ASTROPHYSICS
2016-05-01
Volume589
DOI10.1051/0004-6361/201527970
Contribution Rank第13完成单位
Indexed BySCI ; EI
KeywordPlanets And Satellites: Dynamical Evolution And Stability Planets And Satellites: Formation Techniques: High Angular Resolution Binaries: Visual
Abstract

Context. Wide binaries are a potential pathway for the formation of hot Jupiters. The binary fraction among host stars is an important discriminator between competing formation theories, but has not been well characterised. Additionally, contaminating light from unresolved stars can significantly affect the accuracy of photometric and spectroscopic measurements in studies of transiting exoplanets. 

Aims. We observed 101 transiting exoplanet host systems in the Southern hemisphere in order to create a homogeneous catalogue of both bound companion stars and contaminating background stars, in an area of the sky where transiting exoplanetary systems have not been systematically searched for stellar companions. We investigate the binary fraction among the host stars in order to test theories for the formation of hot Jupiters. 

Methods. Lucky imaging observations from the Two Colour Instrument on the Danish 1.54m telescope at La Silla were used to search for previously unresolved stars at small angular separations. The separations and relative magnitudes of all detected stars were measured. For 12 candidate companions to 10 host stars, previous astrometric measurements were used to evaluate how likely the companions are to be physically associated. 

Results. We provide measurements of 499 candidate companions within 20 arcsec of our sample of 101 planet host stars. 51 candidates are located within 5 arcsec of a host star, and we provide the first published measurements for 27 of these. Calibrations for the plate scale and colour performance of the Two Colour Instrument are presented. 

Conclusions. We find that the overall multiplicity rate of the host stars is 38(-13)(+17)%, consistent with the rate among solar-type stars in our sensitivity range, suggesting that planet formation does not preferentially occur in long period binaries compared to a random sample of field stars. Long period stellar companions (P > 10 yr) appear to occur independently of short period companions, and so the population of close-in stellar companions is unconstrained by our study.

Funding ProjectUK's Science and Technology Facilities Council ; NPRP from the Qatar National Research Fund [Qatar Foundation][X-019-1-006] ; Regione Campania from POR-FSE Campania ; KASI[2014-1-400-06] ; Gemini-Conicyt Fund[32120036] ; Communante francaise de Belgique - Actions de recherche concertees - Academie Wallonie-Europe ; Danish Natural Science Research Council [FNU] ; National Aeronautics and Space Administration ; National Science Foundation
Funding OrganizationUK's Science and Technology Facilities Council ; NPRP from the Qatar National Research Fund [Qatar Foundation][X-019-1-006] ; Regione Campania from POR-FSE Campania ; KASI[2014-1-400-06] ; Gemini-Conicyt Fund[32120036] ; Communante francaise de Belgique - Actions de recherche concertees - Academie Wallonie-Europe ; Danish Natural Science Research Council [FNU] ; National Aeronautics and Space Administration ; National Science Foundation
Language英语
Subject Area天文学 ; 天体物理学 ; 实测天体物理学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherEDP SCIENCES S A
Publication Place17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
ISSN0004-6361
URL查看原文
WOS IDWOS:000375318300070
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordEXOPLANET HOST STARS ; COROT SPACE MISSION ; SPIN-ORBIT MISALIGNMENT ; MASSIVE HOT-JUPITER ; GAS GIANT PLANETS ; SKY SURVEY 2MASS ; STELLAR COMPANIONS ; SPECTROPHOTOMETRIC STANDARDS ; ECLIPSING BINARY ; VARIABLE-STARS
EI Accession Number20161802337819
EI KeywordsStars
EI Classification Number655.2Satellites - 657.2Extraterrestrial Physics and Stellar Phenomena - 741.1Light/Optics
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9598
Collection系外行星研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorEvans, D. F.
Affiliation1.Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
2.Centre for Electronic Imaging, Department of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK
3.Niels Bohr Institute & Centre for Star and Planet Formation, University of Copenhagen Øster Voldgade 5, 1350 Copenhagen, Denmark
4.SUPA, School of Physics & Astronomy, University of St. Andrews, North Haugh, St. Andrews KY16 9SS, UK
5.Qatar Environment and Energy Research Institute (QEERI), HBKU, Qatar Foundation, Doha, Qatar
6.Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 2100 Copenhagen, Denmark
7.Dipartimento di Fisica “E.R. Caianiello”, Università di Salerno, via Giovanni Paolo II 132, 84084 Fisciano, Italy
8.Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Napoli, Italy
9.Meteorologisches Institut, Universität Hamburg, Bundesstraße 55, 20146 Hamburg, Germany
10.Max-Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
11.Istituto Internazionale per gli Alti Studi Scientifici (IIASS), via G. Pellegrino 19, 84019 Vietri sul Mare ( SA), Italy
12.European Southern Observatory, Karl-Schwarzschild Straße 2, 85748 Garching bei München, Germany
13.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, PR China
14.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, PR China
15.Korea Astronomy & Space Science Institute, 776 Daedukdae-ro, Yuseong-gu, 305-348 Daejeon, Republic of Korea
16.Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
17.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK
18.Finnish Centre for Astronomy with ESO (FINCA), Väisäläntie 20, 21500 Piikkiö, Finland
19.Unidad de Astronomía, Fac. de Ciencias Básicas, Universidad de Antofagasta, Avda. U. de Antofagasta 02800, Antofagasta, Chile
20.CITEUC – Centre for Earth and Space Science Research of the University of Coimbra, Observatório Astronómico da Universidade de Coimbra, 3030-004 Coimbra, Portugal
21.Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
22.Department of Physics, Sharif University of Technology, PO Box 11155, 9161 Tehran, Iran
23.Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, 69120 Heidelberg, Germany
24.Planetary and Space Sciences, Department ofPhysical Sciences, The Open University, Milton Keynes, MK7 6AA, UK
25.Institut d’Astrophysique et de Géophysique, Allée du 6 Août 17, Sart Tilman, Bât. B5c, 4000 Liège, Belgium
26.Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark
Recommended Citation
GB/T 7714
Evans, D. F.,Southworth, J.,Maxted, P. F. L.,et al. High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP) I. Lucky imaging observations of 101 systems in the southern hemisphere[J]. ASTRONOMY & ASTROPHYSICS,2016,589.
APA Evans, D. F..,Southworth, J..,Maxted, P. F. L..,Skottfelt, J..,Hundertmark, M..,...&Wertz, O..(2016).High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP) I. Lucky imaging observations of 101 systems in the southern hemisphere.ASTRONOMY & ASTROPHYSICS,589.
MLA Evans, D. F.,et al."High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP) I. Lucky imaging observations of 101 systems in the southern hemisphere".ASTRONOMY & ASTROPHYSICS 589(2016).
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