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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28533
Title: New spectro-photometric characterization of the substellar object HR 2562 B using SPHERE
Authors: MESA, DINO 
Baudino, J. -L.
Charnay, B.
D'ORAZI, VALENTINA 
DESIDERA, Silvano 
Boccaletti, A.
GRATTON, Raffaele 
Bonnefoy, M.
Delorme, P.
Langlois, M.
Vigan, A.
Zurlo, A.
Maire, A. -L.
Janson, M.
Antichi, J.
BARUFFOLO, Andrea 
Bruno, P.
CASCONE, Enrico 
Chauvin, G.
CLAUDI, Riccardo 
DE CAPRIO, VINCENZO 
FANTINEL, Daniela 
FARISATO, Giancarlo 
Feldt, M.
GIRO, Enrico 
Hagelberg, J.
INCORVAIA, SALVATORE 
Lagadec, E.
Lagrange, A. -M.
Lazzoni, C.
LESSIO, Luigi 
SALASNICH, Bernardo 
SCUDERI, Salvatore 
Sissa, E.
TURATTO, Massimo 
Issue Date: 2018
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 612
First Page: A92
Abstract: 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. <BR /> 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. <BR /> 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 M<SUB>Jup</SUB>, T<SUB>eff</SUB> = 1100 ± 200 K, and log g = 4.75 ± 0.41. <P />Based on observations made with European Southern Observatory (ESO) telescopes at Paranal Observatory in Chile, under program ID 198.C-0209(D).
URI: http://hdl.handle.net/20.500.12386/28533
URL: https://www.aanda.org/articles/aa/abs/2018/04/aa31649-17/aa31649-17.html
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201731649
Bibcode ADS: 2018A&A...612A..92M
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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