The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 Micron Spectrum of the Planetary-Mass Companion VHS 1256-1257 b
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| Formato: | Preprint |
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2022
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| author | Miles, Brittany E. Biller, Beth A. Patapis, Polychronis Worthen, Kadin Rickman, Emily Hoch, Kielan K. W. Skemer, Andrew Perrin, Marshall D. Whiteford, Niall Chen, Christine H. Sargent, B. Mukherjee, Sagnick Morley, Caroline V. Moran, Sarah E. Bonnefoy, Mickael Petrus, Simon Carter, Aarynn L. Choquet, Elodie Hinkley, Sasha Ward-Duong, Kimberly Leisenring, Jarron M. Millar-Blanchaer, Maxwell A. Pueyo, Laurent Ray, Shrishmoy Stapelfeldt, Karl R. Stone, Jordan M. Wang, Jason J. Absil, Olivier Balmer, William O. Boccaletti, Anthony Bonavita, Mariangela Booth, Mark Bowler, Brendan P. Chauvin, Gael Christiaens, Valentin Currie, Thayne Danielski, Camilla Fortney, Jonathan J. Girard, Julien H. Greenbaum, Alexandra Z. Henning, Thomas Hines, Dean C. Janson, Markus Kalas, Paul Kammerer, Jens Kenworthy, Matthew A. Kervella, Pierre Lagage, Pierre-Olivier Lew, Ben W. P. Liu, Michael C. Macintosh, Bruce Marino, Sebastian Marley, Mark S. Marois, Christian Matthews, Elisabeth C. Matthews, Brenda C. Mawet, Dimitri McElwain, Michael W. Metchev, Stanimir Meyer, Michael R. Molliere, Paul Pantin, Eric Rebollido, Andreas Quirrenbachm Isabel Ren, Bin B. Vasist, Malavika Wyatt, Mark C. Zhou, Yifan Briesemeister, Zackery W. Bryan, Marta L. Calissendorff, Per Catalloube, Faustine Cugno, Gabriele De Furio, Matthew Dupuy, Trent J. Factor, Samuel M. Faherty, Jacqueline K. Fitzgerald, Michael P. Franson, Kyle Gonzales, Eileen C. Hood, Callie E. Howe, Alex R. Kraus, Adam L. Kuzuhara, Masayuki Lawson, Kellen Lazzoni, Cecilia Liu, Pengyu Llop-Sayson, Jorge Lloyd, James P. Martinez, Raquel A. Mazoyer, Johan Quanz, Sascha P. Redai, Jea Adams Samland, Matthias Schlieder, Joshua E. Tamura, Motohide Tan, Xianyu Uyama, Taichi Vigan, Arthur Vos, Johanna M. Wagner, Kevin Wolff, Schuyler G. Ygouf, Marie Zhang, Keming Zhang, Zhoujian |
| author_facet | Miles, Brittany E. Biller, Beth A. Patapis, Polychronis Worthen, Kadin Rickman, Emily Hoch, Kielan K. W. Skemer, Andrew Perrin, Marshall D. Whiteford, Niall Chen, Christine H. Sargent, B. Mukherjee, Sagnick Morley, Caroline V. Moran, Sarah E. Bonnefoy, Mickael Petrus, Simon Carter, Aarynn L. Choquet, Elodie Hinkley, Sasha Ward-Duong, Kimberly Leisenring, Jarron M. Millar-Blanchaer, Maxwell A. Pueyo, Laurent Ray, Shrishmoy Stapelfeldt, Karl R. Stone, Jordan M. Wang, Jason J. Absil, Olivier Balmer, William O. Boccaletti, Anthony Bonavita, Mariangela Booth, Mark Bowler, Brendan P. Chauvin, Gael Christiaens, Valentin Currie, Thayne Danielski, Camilla Fortney, Jonathan J. Girard, Julien H. Greenbaum, Alexandra Z. Henning, Thomas Hines, Dean C. Janson, Markus Kalas, Paul Kammerer, Jens Kenworthy, Matthew A. Kervella, Pierre Lagage, Pierre-Olivier Lew, Ben W. P. Liu, Michael C. Macintosh, Bruce Marino, Sebastian Marley, Mark S. Marois, Christian Matthews, Elisabeth C. Matthews, Brenda C. Mawet, Dimitri McElwain, Michael W. Metchev, Stanimir Meyer, Michael R. Molliere, Paul Pantin, Eric Rebollido, Andreas Quirrenbachm Isabel Ren, Bin B. Vasist, Malavika Wyatt, Mark C. Zhou, Yifan Briesemeister, Zackery W. Bryan, Marta L. Calissendorff, Per Catalloube, Faustine Cugno, Gabriele De Furio, Matthew Dupuy, Trent J. Factor, Samuel M. Faherty, Jacqueline K. Fitzgerald, Michael P. Franson, Kyle Gonzales, Eileen C. Hood, Callie E. Howe, Alex R. Kraus, Adam L. Kuzuhara, Masayuki Lawson, Kellen Lazzoni, Cecilia Liu, Pengyu Llop-Sayson, Jorge Lloyd, James P. Martinez, Raquel A. Mazoyer, Johan Quanz, Sascha P. Redai, Jea Adams Samland, Matthias Schlieder, Joshua E. Tamura, Motohide Tan, Xianyu Uyama, Taichi Vigan, Arthur Vos, Johanna M. Wagner, Kevin Wolff, Schuyler G. Ygouf, Marie Zhang, Keming Zhang, Zhoujian |
| contents | We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a $<$20 M$_\mathrm{Jup}$ widely separated ($\sim$8\arcsec, a = 150 au), young, planetary-mass companion that shares photometric colors and spectroscopic features with the directly imaged exoplanets HR 8799 c, 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 \textit{JWST}'s NIRSpec IFU and MIRI MRS modes for coverage from 1 $μ$m to 20 $μ$m at resolutions of $\sim$1,000 - 3,700. Water, methane, carbon monoxide, carbon dioxide, sodium, and potassium are observed in several portions of the \textit{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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2209_00620 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 Micron Spectrum of the Planetary-Mass Companion VHS 1256-1257 b Miles, Brittany E. Biller, Beth A. Patapis, Polychronis Worthen, Kadin Rickman, Emily Hoch, Kielan K. W. Skemer, Andrew Perrin, Marshall D. Whiteford, Niall Chen, Christine H. Sargent, B. Mukherjee, Sagnick Morley, Caroline V. Moran, Sarah E. Bonnefoy, Mickael Petrus, Simon Carter, Aarynn L. Choquet, Elodie Hinkley, Sasha Ward-Duong, Kimberly Leisenring, Jarron M. Millar-Blanchaer, Maxwell A. Pueyo, Laurent Ray, Shrishmoy Stapelfeldt, Karl R. Stone, Jordan M. Wang, Jason J. Absil, Olivier Balmer, William O. Boccaletti, Anthony Bonavita, Mariangela Booth, Mark Bowler, Brendan P. Chauvin, Gael Christiaens, Valentin Currie, Thayne Danielski, Camilla Fortney, Jonathan J. Girard, Julien H. Greenbaum, Alexandra Z. Henning, Thomas Hines, Dean C. Janson, Markus Kalas, Paul Kammerer, Jens Kenworthy, Matthew A. Kervella, Pierre Lagage, Pierre-Olivier Lew, Ben W. P. Liu, Michael C. Macintosh, Bruce Marino, Sebastian Marley, Mark S. Marois, Christian Matthews, Elisabeth C. Matthews, Brenda C. Mawet, Dimitri McElwain, Michael W. Metchev, Stanimir Meyer, Michael R. Molliere, Paul Pantin, Eric Rebollido, Andreas Quirrenbachm Isabel Ren, Bin B. Vasist, Malavika Wyatt, Mark C. Zhou, Yifan Briesemeister, Zackery W. Bryan, Marta L. Calissendorff, Per Catalloube, Faustine Cugno, Gabriele De Furio, Matthew Dupuy, Trent J. Factor, Samuel M. Faherty, Jacqueline K. Fitzgerald, Michael P. Franson, Kyle Gonzales, Eileen C. Hood, Callie E. Howe, Alex R. Kraus, Adam L. Kuzuhara, Masayuki Lawson, Kellen Lazzoni, Cecilia Liu, Pengyu Llop-Sayson, Jorge Lloyd, James P. Martinez, Raquel A. Mazoyer, Johan Quanz, Sascha P. Redai, Jea Adams Samland, Matthias Schlieder, Joshua E. Tamura, Motohide Tan, Xianyu Uyama, Taichi Vigan, Arthur Vos, Johanna M. Wagner, Kevin Wolff, Schuyler G. Ygouf, Marie Zhang, Keming Zhang, Zhoujian Earth and Planetary Astrophysics Solar and Stellar Astrophysics We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a $<$20 M$_\mathrm{Jup}$ widely separated ($\sim$8\arcsec, a = 150 au), young, planetary-mass companion that shares photometric colors and spectroscopic features with the directly imaged exoplanets HR 8799 c, 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 \textit{JWST}'s NIRSpec IFU and MIRI MRS modes for coverage from 1 $μ$m to 20 $μ$m at resolutions of $\sim$1,000 - 3,700. Water, methane, carbon monoxide, carbon dioxide, sodium, and potassium are observed in several portions of the \textit{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. |
| title | The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 Micron Spectrum of the Planetary-Mass Companion VHS 1256-1257 b |
| topic | Earth and Planetary Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2209.00620 |