@article{14dbfe2254a649a1ad6acb02d372822a,
title = "CONSTRAINTS on the ARCHITECTURE of the HD 95086 PLANETARY SYSTEM with the GEMINI PLANET IMAGER",
abstract = "We present astrometric monitoring of the young exoplanet HD 95086 b obtained with the Gemini Planet Imager between 2013 and 2016. A small but significant position angle change is detected at constant separation; the orbital motion is confirmed with literature measurements. Efficient Monte Carlo techniques place preliminary constraints on the orbital parameters of HD 95086 b. With 68% confidence, a semimajor axis of 61.7+20.7 -8.4 20.7 au and an inclination of 153 .°0+9.7 -13.5 9.7 are favored, with eccentricity less than 0.21. Under the assumption of a coplanar planet-disk system, the periastron of HD 95086 b is beyond 51 au with 68% confidence. Therefore, HD 95086 b cannot carve the entire gap inferred from the measured infrared excess in the SED of HD 95086. We use our sensitivity to additional planets to discuss specific scenarios presented in the literature to explain the geometry of the debris belts. We suggest that either two planets on moderately eccentric orbits or three to four planets with inhomogeneous masses and orbital properties are possible. The sensitivity to additional planetary companions within the observations presented in this study can be used to help further constrain future dynamical simulations of the planet-disk system.",
keywords = "astrometry, disk interactions, planet, planetary systems, stars: individual (HD 95086)",
author = "Julien Rameau and Nielsen, {Eric L.} and Rosa, {Robert J De} and Blunt, {Sarah C.} and Jennifer Patience and Ren{\'e} Doyon and Graham, {James R.} and David Lafreni{\`e}re and Bruce Macintosh and Franck Marchis and Vanessa Bailey and Chilcote, {Jeffrey K.} and Gaspard Duchene and Esposito, {Thomas M.} and Hung, {Li Wei} and Konopacky, {Quinn M.} and J{\'e}r{\^o}me Maire and Christian Marois and Stanimir Metchev and Perrin, {Marshall D.} and Laurent Pueyo and Abhijith Rajan and Dmitry Savransky and Wang, {Jason J.} and Kimberly Ward-Duong and Wolff, {Schuyler G.} and Ammons, {S. Mark} and Pascale Hibon and Patrick Ingraham and Paul Kalas and Morzinski, {Katie M.} and Rebecca Oppenheimer and Rantakyear{\"o}, {Fredrik T.} and Sandrine Thomas",
note = "Funding Information: We thank Kate Y. L. Su for interesting discussions about the debris system and Virginie Faramaz for her fruitful advices on handling chaotic zones. Based on observations obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the National Science Foundation (NSF) on behalf of the Gemini partnership: the NSF (United States), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), Ministerio da Ciencia, Tecnologia e Inovacao (Brazil) and Ministerio de Ciencia, Tecnologia e Innovacion Productiva (Argentina). J.R., R.D., and D.L. acknowledge support from the Fonds de Recherche du Quebec. Supported by NSF grants AST-1518332 (R.J.D.R., J.R.G., J.J.W., T.M.E., P.K.), AST-1411868 (B.M., A.R., K.W.D.), and AST-141378 (G.D.). Supported by NASA grants NNX15AD95G/NEXSS and NNX15AC89G (R.J.D.R., J.R.G., P.K., J.J.W., T.M.E.), and NNX14AJ80G (E.L.N., S.C. B., B.M., F.M., M.P.). Portions of this work were performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DEAC52- 07NA27344 (S.M.A.). Publisher Copyright: {\textcopyright} 2016. The American Astronomical Society. All rights reserved.",
year = "2016",
month = may,
day = "10",
doi = "10.3847/2041-8205/822/2/L29",
language = "English (US)",
volume = "822",
journal = "Astrophysical Journal Letters",
issn = "2041-8205",
publisher = "IOP Publishing Ltd.",
number = "2",
}