Published April 2018
| Version v1
Journal article
New spectro-photometric characterization of the substellar object HR 2562 B using SPHERE
Creators
- Mesa, D.
- Baudino, J.-L.
- Charnay, B.
- D'orazi, V.
- Desidera, S.
- Boccaletti, A.
- Gratton, R.
- Bonnefoy, M.
- Delorme, P.
- Langlois, M.
- Vigan, A.
- Zurlo, A.
- Maire, A.
- Janson, M.
- Antichi, J.
- Baruffolo, A.
- Bruno, P.
- Cascone, E.
- Chauvin, G.
- Claudi, R.
- Caprio, V.
- Fantinel, D.
- Farisato, G.
- Feldt, M.
- Giro, E.
- Hagelberg, J.
- Incorvaia, S.
- Lagadec, Eric
- Lagrange, A.
- Lazzoni, C.
- Lessio, L.
- Salasnich, B.
- Scuderi, S.
- Sissa, E.
- Turatto, M.
Contributors
Others:
- INAF - Osservatorio Astronomico di Padova (OAPD) ; Istituto Nazionale di Astrofisica (INAF)
- University of Oxford [Oxford]
- Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
- Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) ; Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ) ; Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])
- Université Claude Bernard Lyon 1 - Faculté des sciences et technologies (UCBL FST) ; Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon
- Laboratoire d'Astrophysique de Marseille (LAM) ; Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)
- Max-Planck-Institut für Astronomie (MPIA) ; Max-Planck-Gesellschaft
- Stockholm Observatory Department of Astronomy ; Stockholm University
- INAF - Osservatorio Astrofisico di Arcetri (OAA) ; Istituto Nazionale di Astrofisica (INAF)
- Max-Planck-Institut für Mikrostrukturphysik (MPI-HALLE) ; Max-Planck-Gesellschaft
- INAF - Osservatorio Astronomico di Capodimonte (OAC) ; Istituto Nazionale di Astrofisica (INAF)
- Joseph Louis LAGRANGE (LAGRANGE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
Description
Aims: HR 2562 is an F5V star located at 33 pc from the Sun hosting a substellar companion that was discovered using the Gemini planet imager (GPI) instrument. The main objective of the present paper is to provide an extensive characterization of the substellar companion, by deriving its fundamental properties.
Methods: We observed HR 2562 with the near-infrared branch composed by the integral field spectrograph (IFS) and the infrared dual band spectrograph (IRDIS) of the spectro-polarimetric high-contrast exoplanet research (SPHERE) instrument at the very large telescope (VLT). During our observations IFS was operating in the Y J band, while IRDIS was observing with the H broadband filter. The data were reduced with the dedicated SPHERE GTO pipeline, which is custom designed for this instrument. On the reduced images, we then applied the post-processing procedures that are specifically prepared to subtract the speckle noise.
Results: The companion is clearly detected in both IRDIS and IFS datasets. We obtained photometry in three different spectral bands. The comparison with template spectra allowed us to derive a spectral type of T2-T3 for the companion. Using both evolutionary and atmospheric models we inferred the main physical parameters of the companion obtaining a mass of 32 ± 14 MJup, Teff = 1100 ± 200 K, and log g = 4.75 ± 0.41.
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.archives-ouvertes.fr/hal-02109775
- URN
- urn:oai:HAL:hal-02109775v1
Origin repository
- Origin repository
- UNICA