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The JWST Early-release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 μm Spectrum of the Planetary-mass Companion VHS 1256-1257 b
Miles, Brittany E.; Biller, Beth A.; Patapis, Polychronis et al.
2023 • In Astrophysical Journal, 946, p. 6
Peer Reviewed verified by ORBi
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https://hdl.handle.net/2268/302519
DOI
10.3847/2041-8213/acb04a
arXiV
arXiv:2209.00620
 

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Keywords :
Brown dwarfs; Exoplanet atmospheres; Extrasolar gaseous giant; planets; 185; 487; 509; Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Solar and Stellar Astrophysics
Abstract :
[en] We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a <20 M <SUB>Jup</SUB> widely separated (~8″, a = 150 au), young, planetary-mass companion that shares photometric colors and spectroscopic features with the directly imaged exoplanets HR 8799c, d, and e. As an L-to-T transition object, VHS 1256 b exists along the region of the color-magnitude diagram where substellar atmospheres transition from cloudy to clear. We observed VHS 1256 b with JWST's NIRSpec IFU and MIRI MRS modes for coverage from 1 to 20 μm at resolutions of ~1000-3700. Water, methane, carbon monoxide, carbon dioxide, sodium, and potassium are observed in several portions of the JWST spectrum based on comparisons from template brown dwarf spectra, molecular opacities, and atmospheric models. The spectral shape of VHS 1256 b is influenced by disequilibrium chemistry and clouds. We directly detect silicate clouds, the first such detection reported for a planetary-mass companion.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Miles, Brittany E.;  University of California, Santa Cruz, Department of Astronomy and Astrophysics, University of California, Irvine, Department of Physics and Astronomy
Biller, Beth A.;  Scottish Universities Physics Alliance, University of Edinburgh, UK
Patapis, Polychronis;  ETH Zurich, Department of Physics
Worthen, Kadin;  Johns Hopkins University, Department of Physics and Astronomy
Rickman, Emily;  European Space Agency (ESA), ESA Office, Space Telescope Science Institute, 3700 San Martin Drive, MD 21218, USA, Space Telescope Science Institute, Baltimore, MD 21218, USA
Hoch, Kielan K. W.;  University of California, San Diego, Center for Astrophysics and Space Science
Skemer, Andrew;  University of California, Santa Cruz, Department of Astronomy and Astrophysics
Perrin, Marshall D.;  Space Telescope Science Institute, Baltimore, Maryland
Whiteford, Niall;  American Museum of Natural History, New York
Chen, Christine H.;  Space Telescope Science Institute, Baltimore, Maryland, Johns Hopkins University, Department of Physics and Astronomy
Sargent, B.;  University of California, San Diego, Center for Astrophysics and Space Science
Mukherjee, Sagnick;  University of California, Santa Cruz, Department of Astronomy and Astrophysics
Morley, Caroline V.;  University of Texas, Austin, Department of Astronomy
Moran, Sarah E.;  Department of Planetary Sciences, Lunar &, Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA
Bonnefoy, Mickael;  Institute de Planetologie et d'Astrophysique de Grenoble
Petrus, Simon;  Instituto de Física y Astronomía Facultad de Ciencias, Universidad de Valparaíso, Av. Gran Bretaña 1111, Valparaíso, Av. Gran Bretaña 1111, Valparaíso, Chile, Núcleo Milenio Formacíon Planetaria-NPF, Universidad de Valparaíso, Av. Gran Bretaña 1111, Valparaíso, Chile
Carter, Aarynn L.;  University of California, Santa Cruz, Department of Astronomy and Astrophysics
Choquet, Elodie;  Aix-Marseille Universite, Laboratoire d'Astrophysique
Hinkley, Sasha;  University of Exeter, Department of Physics and Astronomy
Ward-Duong, Kimberly;  Smith College, Massachusetts
Leisenring, Jarron M.;  University of Arizona, Department of Astronomy and Steward Observatory
Millar-Blanchaer, Maxwell A.;  University of California, Santa Barbara, Department of Physics and Astronomy
Pueyo, Laurent;  Space Telescope Science Institute, Baltimore, Maryland
Ray, Shrishmoy;  University of Exeter, Department of Physics and Astronomy
Sallum, Steph;  University of California, Irvine, Department of Physics and Astronomy
Stapelfeldt, Karl R.;  Jet Propulsion Laboratory
Stone, Jordan M.;  Naval Research Laboratory, Remote Sensing Division, 4555 Overlook Avenue SW, Washington, DC 20375 USA
Wang, Jason J.;  Northwestern University, Department of Physics and Astronomy, California Institute of Technology, Division of Physics, Mathematics and Astronomy
Absil, Olivier  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Balmer, William O.;  Johns Hopkins University, Department of Physics and Astronomy, Space Telescope Science Institute, Baltimore, Maryland
Boccaletti, Anthony;  LESIA, Observatoire de Paris, Université PSL, CNRS, Université Paris Cité, Sorbonne Université, 5 place Jules Janssen, F-92195 Meudon, France
Bonavita, Mariangela;  Open University, Department of Physical Sciences
Booth, Mark;  Astrophysikalisches Institut und Universitätssternwarte, Friedrich-Schiller-Universität Jena, Schillergäßchen2-3, D-07745 Jena, Germany
Bowler, Brendan P.;  University of Texas, Austin, Department of Astronomy
Chauvin, Gael;  Laboratoire J.-L. Lagrange, Université Cote dÕAzur, CNRS, Observatoire de la Cote dÕAzur, F-06304 Nice, France
Christiaens, Valentin  ;  Université de Liège - ULiège > Unités de recherche interfacultaires > Space sciences, Technologies and Astrophysics Research (STAR)
Currie, Thayne;  University of Texas, San Antonio, Department of Physics and Astronomy, Subaru Telescope
Danielski, Camilla;  Institute of Astrophysics of Andalusia
Fortney, Jonathan J.;  University of California, Santa Cruz, Department of Astronomy and Astrophysics
Girard, Julien H.;  Space Telescope Science Institute, Baltimore, Maryland
Grady, Carol A.;  Eureka Scientific, 2452 Delmer Street, Suite 1, Oakland CA, 96402, USA
Greenbaum, Alexandra Z.;  Infrared Processing and Analysis Center
Henning, Thomas;  Max-Planck-Institute for Astronomy, Heidelberg
Hines, Dean C.;  Space Telescope Science Institute, Baltimore, Maryland
Janson, Markus;  AlbaNova University Center
Kalas, Paul;  University of California, Berkeley, Department of Astronomy, SETI Institute, California, Foundation for Research and Technology, Greece
Kammerer, Jens;  Space Telescope Science Institute, Baltimore, Maryland
Kennedy, Grant M.;  University of Warwick, Department of Physics
Kenworthy, Matthew A.;  Leiden Observatory
Kervella, Pierre;  LESIA, Observatoire de Paris, Université PSL, CNRS, Université Paris Cité, Sorbonne Université, 5 place Jules Janssen, F-92195 Meudon, France
Lagage, Pierre-Olivier;  Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM, F-91191, Gif-sur-Yvette, France
Lew, Ben W. P.;  NASA Ames Research Center
Liu, Michael C.;  University of Hawaii, Manoa, Institute for Astronomy
Macintosh, Bruce;  Kavli Institute for Particle Astrophysics and Cosmology, California
Marino, Sebastian;  University of Cambridge, UK, University of Cambridge, Institute of Astronomy
Marley, Mark S.;  Department of Planetary Sciences, Lunar &, Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA
Marois, Christian;  National Research Council, Canada
Matthews, Elisabeth C.;  University of Geneva, Astronomical Observatory
Matthews, Brenda C.;  Herzberg Institute for Astronomy and Astrophysics
Mawet, Dimitri;  California Institute of Technology, Division of Physics, Mathematics and Astronomy, Jet Propulsion Laboratory
McElwain, Michael W.;  Goddard Space Flight Center, Astrophysics Division
Metchev, Stanimir;  Western University, Department of Physics &, Astronomy and Institute for Earth and Space Exploration, 1151 Richmond Street, London, Ontario N6A 3K7, Canada
Meyer, Michael R.;  University of Michigan, Department of Astronomy
Molliere, Paul;  Max-Planck-Institute for Astronomy, Heidelberg
Pantin, Eric;  IRFU/DAp Département D'Astrophysique CE Saclay, Gif-sur-Yvette, France
Quirrenbach, Andreas;  University of Heidelberg, Astronomical Observatory
Rebollido, Isabel;  Space Telescope Science Institute, Baltimore, Maryland
Ren, Bin B.;  Institute de Planetologie et d'Astrophysique de Grenoble
Schneider, Glenn;  University of Arizona, Department of Astronomy and Steward Observatory
Vasist, Malavika ;  Université de Liège - ULiège > Faculté des Sciences > Form. doct. sc. (sc. spatiales - paysage)
Wyatt, Mark C.;  University of Cambridge, Institute of Astronomy
Zhou, Yifan;  University of Texas, Austin, Department of Astronomy
Briesemeister, Zackery W.;  NASA Goddard Space Flight Center, Maryland
Bryan, Marta L.;  University of California, Berkeley, Department of Astronomy
Calissendorff, Per;  University of Michigan, Department of Astronomy
Cantalloube, Faustine ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Planetary & Stellar systems Imaging Laboratory ; Aix-Marseille Universite, Laboratoire d'Astrophysique
Cugno, Gabriele;  University of Michigan, Department of Astronomy
De Furio, Matthew;  University of Michigan, Department of Astronomy
Dupuy, Trent J.;  Royal Observatory Edinburgh
Factor, Samuel M.;  University of Texas, Austin, Department of Astronomy
Faherty, Jacqueline K.;  American Museum of Natural History, New York
Fitzgerald, Michael P.;  University of California, Los Angeles
Franson, Kyle;  Cornell University, Department of Astronomy/Center for Radiophysics and Space Research, University of Texas, Austin, Department of Astronomy
Gonzales, Eileen C.;  Astrobiology Center, Japan, NASA Goddard Space Flight Center, Maryland
Hood, Callie E.;  University of California, Santa Cruz, Department of Astronomy and Astrophysics
Howe, Alex R.;  University of Exeter, Department of Physics and Astronomy
Kraus, Adam L.;  University of Texas, Austin, Department of Astronomy
Kuzuhara, Masayuki;  Scottish Universities Physics Alliance, University of Edinburgh, UK
Lagrange, Anne-Marie;  LESIA, Observatoire de Paris, Université PSL, CNRS, Université Paris Cité, Sorbonne Université, 5 place Jules Janssen, F-92195 Meudon, France
Lawson, Kellen;  Cornell University, Department of Astronomy/Center for Radiophysics and Space Research
Lazzoni, Cecilia;  ETH Zurich, Department of Physics
Liu, Pengyu;  Harvard Smithsonian Center for Astrophysics
Llop-Sayson, Jorge;  California Institute of Technology, Division of Physics, Mathematics and Astronomy
Lloyd, James P.;  University of Tokyo, Japan
Martinez, Raquel A.;  University of California, Irvine, Department of Physics and Astronomy
Mazoyer, Johan;  LESIA, Observatoire de Paris, Université PSL, CNRS, Université Paris Cité, Sorbonne Université, 5 place Jules Janssen, F-92195 Meudon, France
Quanz, Sascha P.;  University of Oxford, Department of Physics
Redai, Jea Adams;  American Museum of Natural History, New York
Samland, Matthias;  Max-Planck-Institute for Astronomy, Heidelberg
Schlieder, Joshua E.;  NASA Goddard Space Flight Center, Maryland
Tamura, Motohide;  University of Tokyo, Japan
Tan, Xianyu;  University of Oxford, Department of Physics
Uyama, Taichi;  Infrared Processing and Analysis Center
Vigan, Arthur;  Aix-Marseille Universite, Laboratoire d'Astrophysique
Vos, Johanna M.;  American Museum of Natural History, New York
Wagner, Kevin;  University of Arizona, Department of Astronomy and Steward Observatory
Wolff, Schuyler G.;  University of Arizona, Department of Astronomy and Steward Observatory
Ygouf, Marie;  Jet Propulsion Laboratory
Zhang, Xi;  University of California, Santa Cruz, Department of Astronomy and Astrophysics
Zhang, Keming;  University of California, Berkeley, Department of Astronomy
Zhang, Zhoujian;  University of Texas, Austin, Department of Astronomy
More authors (101 more) Less
Language :
English
Title :
The JWST Early-release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 μm Spectrum of the Planetary-mass Companion VHS 1256-1257 b
Publication date :
01 March 2023
Journal title :
Astrophysical Journal
ISSN :
0004-637X
eISSN :
1538-4357
Publisher :
IOP Publishing, Bristol, Gb
Volume :
946
Pages :
L6
Peer reviewed :
Peer Reviewed verified by ORBi
Additional URL :
https://ui.adsabs.harvard.edu/abs/2023ApJ...946L...6M
Available on ORBi :
since 11 May 2023

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