Article (Scientific journals)
Constraints on HD 113337 fundamental parameters and planetary system. Combining long-base visible interferometry, disc imaging, and high-contrast imaging
Borgniet, S.; Perraut, K.; Su, K. et al.
2019In Astronomy and Astrophysics, 627
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Keywords :
techniques: interferometric; techniques: high angular resolution; stars: individual: HD 113337; planetary systems; stars: fundamental parameters
Abstract :
[en] Context. HD 113337 is a main-sequence F6V field star more massive than the Sun. This star hosts one confirmed giant planet and possibly a second candidate, detected by radial velocities (RVs). The star also hosts a cold debris disc detected through the presence of an infrared excess, making it an interesting system to explore. <BR /> Aims: We aim to bring new constraints on the star's fundamental parameters, debris disc properties, and planetary companion(s) by combining complementary techniques. <BR /> Methods: We used the VEGA interferometer on the CHARA array to measure the angular diameter of HD 113337. We derived its linear radius using the parallax from the Gaia Second Data Release. We computed the bolometric flux to derive its effective temperature and luminosity, and we estimated its mass and age using evolutionary tracks. Then, we used Herschel images to partially resolve the outer debris disc and estimate its extension and inclination. Next, we acquired high-contrast images of HD 113337 with the LBTI to probe the 10-80 au separation range. Finally, we combined the deduced contrast maps with previous RVs of the star using the MESS2 software to bring upper mass limits on possible companions at all separations up to 80 au. We took advantage of the constraints on the age and inclination brought by fundamental parameter analysis and disc imaging, respectively, for this analysis. <BR /> Results: We derive a limb-darkened angular diameter of 0.386 ± 0.009 mas that converts into a linear radius of 1.50 ± 0.04 R[SUB]⊙[/SUB] for HD 113337. The fundamental parameter analysis leads to an effective temperature of 6774 ± 125 K and to two possible age solutions: one young within 14-21 Myr and one old within 0.8-1.7 Gyr. We partially resolve the known outer debris disc and model its emission. Our best solution corresponds to a radius of 85 ± 20 au, an extension of 30 ± 20 au, and an inclination within 10-30° for the outer disc. The combination of imaging contrast limits, published RV, and age and inclination solutions allows us to derive a first possible estimation of the true masses of the planetary companions: 7[SUB]-2[/SUB][SUP]+4[/SUP] M[SUB]Jup[/SUB] for HD 113337 b (confirmed companion) and 16[SUB]-3[/SUB][SUP]+10[/SUP] M[SUB]Jup[/SUB] for HD 113337 c (candidate companion). We also constrain possible additional companions at larger separations. Partly based on observations made with the VEGA/CHARA spectro-interferometer.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Borgniet, S.;  LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, 92195, Meudon, France ; Université Grenoble Alpes, IPAG, CNRS, 38000, Grenoble, France
Perraut, K.;  Université Grenoble Alpes, IPAG, CNRS, 38000, Grenoble, France
Su, K.;  Steward Observatory, University of Arizona, 933 N Cherry Ave, Tucson, AZ, 85721, USA
Bonnefoy, M.;  Université Grenoble Alpes, IPAG, CNRS, 38000, Grenoble, France ; Max Planck Institute for Astronomy, Koenigstuhl 17, 69117, Heidelberg, Germany
Delorme, P.;  Université Grenoble Alpes, IPAG, CNRS, 38000, Grenoble, France
Lagrange, A.-M.;  Université Grenoble Alpes, IPAG, CNRS, 38000, Grenoble, France
Bailey, V.;  Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Buenzli, E.;  Max Planck Institute for Astronomy, Koenigstuhl 17, 69117, Heidelberg, Germany
Defrere, Denis ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Henning, T.;  Max Planck Institute for Astronomy, Koenigstuhl 17, 69117, Heidelberg, Germany
Hinz, P.;  Steward Observatory, University of Arizona, 933 N Cherry Ave, Tucson, AZ, 85721, USA
Leisenring, J.;  Steward Observatory, University of Arizona, 933 N Cherry Ave, Tucson, AZ, 85721, USA
Meunier, N.;  Université Grenoble Alpes, IPAG, CNRS, 38000, Grenoble, France
Mourard, D.;  Université Côte d'Azur, OCA, CNRS, Lagrange, Parc Valrose, Bât. Fizeau, 06108, Nice cedex 02, France
Nardetto, N.;  Université Côte d'Azur, OCA, CNRS, Lagrange, Parc Valrose, Bât. Fizeau, 06108, Nice cedex 02, France
Skemer, A.;  Steward Observatory, University of Arizona, 933 N Cherry Ave, Tucson, AZ, 85721, USA
Spalding, E.;  Steward Observatory, University of Arizona, 933 N Cherry Ave, Tucson, AZ, 85721, USA)
More authors (7 more) Less
Language :
English
Title :
Constraints on HD 113337 fundamental parameters and planetary system. Combining long-base visible interferometry, disc imaging, and high-contrast imaging
Publication date :
01 July 2019
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
627
Peer reviewed :
Peer Reviewed verified by ORBi
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