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

JWST Early Release Science program 1386 collaboration; Brittany E. Miles; Beth A. Biller; Polychronis Patapis; Kadin Worthen; Emily Rickman; Kielan K. W. Hoch; Andrew Skemer; Marshall D. Perrin; Niall Whiteford; Christine H. Chen; Sagnick Mukherjee; Caroline V. Morley; Sarah E. Moran; Mickael Bonnefoy; Simon Petrus; Aarynn L. Carter; Elodie Choquet; Sasha Hinkley; Kimberly Ward-Duong; Jarron M. Leisenring; Maxwell A. Millar-Blanchaer; Laurent Pueyo; Shrishmoy Ray; Steph Sallum; Karl R. Stapelfeldt; Jordan M. Stone; Jason J. Wang; Olivier Absil; William O. Balmer; Anthony Boccaletti; Mariangela Bonavita; Mark Booth; Brendan P. Bowler; Gael Chauvin; Valentin Christiaens; Thayne Currie; Camilla Danielski; Jonathan J. Fortney; Julien H. Girard; Carol A. Grady; Alexandra Z. Greenbaum; Thomas Henning; Dean C. Hines; Markus Janson; Paul Kalas; Jens Kammerer; Grant M. Kennedy; Matthew A. Kenworthy; Pierre Kervella; Pierre-Olivier Lagage; Ben W. P. Lew; Michael C. Liu; Bruce Macintosh; Sebastian Marino; Mark S. Marley; Christian Marois; Elisabeth C. Matthews; Brenda C. Matthews; Dimitri Mawet; Michael W. McElwain; Stanimir Metchev; Michael R. Meyer; Paul Molliere; Eric Pantin; Andreas  Quirrenbachm; Isabel Rebollido; Bin B. Ren; Glenn Schneider; Malavika Vasist; Mark C. Wyatt; Yifan Zhou; Zackery W. Briesemeister; Marta L. Bryan; Per Calissendorff; Faustine Catalloube; Gabriele Cugno; Matthew De Furio; Trent J. Dupuy; Samuel M. Factor; Jacqueline K. Faherty; Michael P. Fitzgerald; Kyle Franson; Eileen C. Gonzales; Callie E. Hood; Alex R. Howe; Adam L. Kraus; Masayuki Kuzuhara; Anne-Marie Lagrange; Kellen Lawson; Cecilia Lazzoni; Pengyu Liu; Jorge Llop-Sayson; James P. Lloyd; Raquel A. Martinez; Johan Mazoyer; Sascha P. Quanz; Jea Adams Redai; Matthias Samland; Joshua E. Schlieder; Motohide Tamura; Xianyu Tan; Taichi Uyama; Arthur Vigan; Johanna M. Vos; Kevin Wagner; Schuyler G. Wolff; Marie Ygouf; Xi Zhang; Keming Zhang; Zhoujian Zhang

doi:10.3847/2041-8213/acb04a

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

JWST Early Release Science program 1386 collaboration, Brittany E. Miles^*, Beth A. Biller, Polychronis Patapis, Kadin Worthen, Emily Rickman, Kielan K. W. Hoch, Andrew Skemer, Marshall D. Perrin, Niall Whiteford, Christine H. Chen, Sagnick Mukherjee, Caroline V. Morley, Sarah E. Moran, Mickael Bonnefoy, Simon Petrus, Aarynn L. Carter, Elodie Choquet, Sasha Hinkley, Kimberly Ward-DuongJarron M. Leisenring, Maxwell A. Millar-Blanchaer, Laurent Pueyo, Shrishmoy Ray, Steph Sallum, Karl R. Stapelfeldt, Jordan M. Stone, Jason J. Wang, Olivier Absil, William O. Balmer, Anthony Boccaletti, Mariangela Bonavita, Mark Booth, Brendan P. Bowler, Gael Chauvin, Valentin Christiaens, Thayne Currie, Camilla Danielski, Jonathan J. Fortney, Julien H. Girard, Carol A. Grady, Alexandra Z. Greenbaum, Thomas Henning, Dean C. Hines, Markus Janson, Paul Kalas, Jens Kammerer, Grant M. Kennedy, Matthew A. Kenworthy, Pierre Kervella, Pierre-Olivier Lagage, Ben W. P. Lew, Michael C. Liu, Bruce Macintosh, Sebastian Marino, Mark S. Marley, Christian Marois, Elisabeth C. Matthews, Brenda C. Matthews, Dimitri Mawet, Michael W. McElwain, Stanimir Metchev, Michael R. Meyer, Paul Molliere, Eric Pantin, Andreas Quirrenbachm, Isabel Rebollido, Bin B. Ren, Glenn Schneider, Malavika Vasist, Mark C. Wyatt, Yifan Zhou, Zackery W. Briesemeister, Marta L. Bryan, Per Calissendorff, Faustine Catalloube, Gabriele Cugno, Matthew De Furio, Trent J. Dupuy, Samuel M. Factor, Jacqueline K. Faherty, Michael P. Fitzgerald, Kyle Franson, Eileen C. Gonzales, Callie E. Hood, Alex R. Howe, Adam L. Kraus, Masayuki Kuzuhara, Anne-Marie Lagrange, Kellen Lawson, Cecilia Lazzoni, Pengyu Liu, Jorge Llop-Sayson, James P. Lloyd, Raquel A. Martinez, Johan Mazoyer, Sascha P. Quanz, Jea Adams Redai, Matthias Samland, Joshua E. Schlieder, Motohide Tamura, Xianyu Tan, Taichi Uyama, Arthur Vigan, Johanna M. Vos, Kevin Wagner, Schuyler G. Wolff, Marie Ygouf, Xi Zhang, Keming Zhang, Zhoujian Zhang

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a <20 M _Jup 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.

Original language	English
Article number	L6
Pages (from-to)	1-19
Number of pages	19
Journal	Astrophysical Journal Letters
Volume	946
Issue number	1
DOIs	https://doi.org/10.3847/2041-8213/acb04a
Publication status	Published - 22 Mar 2023

Keywords / Materials (for Non-textual outputs)

astro-ph.EP
astro-ph.SR

Access to Document

10.3847/2041-8213/acb04aLicence: Creative Commons: Attribution (CC-BY)

2209.00620v2Accepted author manuscript, 6.46 MBLicence: Creative Commons: Attribution (CC-BY)

https://arxiv.org/abs/2209.00620Licence: Creative Commons: Attribution (CC-BY)

1 Finished
1 Active

Extending Stellar Astrophysics to Planetary Masses
Dupuy, T.
STFC
1/04/22 → 31/03/25
Project: Research
Astronomy and Astrophysics at Edinburgh
Dunlop, J., Best, P., Biller, B., Ferguson, A., Hambly, N., Heymans, C., Khochfar, S., Lawrence, A., Liddle, A., Mann, B., McLure, R., Meiksin, A., Peacock, J., Penarrubia, J., Rice, K. & Taylor, A.
STFC
1/04/15 → 30/09/18
Project: Research

Cite this

JWST Early Release Science program 1386 collaboration, Miles, B. E., Biller, B. A., Patapis, P., Worthen, K., Rickman, E., Hoch, K. K. W., Skemer, A., Perrin, M. D., Whiteford, N., Chen, C. H., Mukherjee, S., Morley, C. V., Moran, S. E., Bonnefoy, M., Petrus, S., Carter, A. L., Choquet, E., Hinkley, S., ... Zhang, Z. (2023). 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. Astrophysical Journal Letters, 946(1), 1-19. Article L6. https://doi.org/10.3847/2041-8213/acb04a

@article{a774587b89f7477995175ed2adf1871b,

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",

abstract = "We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a <20 M Jup 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.",

keywords = "astro-ph.EP, astro-ph.SR",

author = "{JWST Early Release Science program 1386 collaboration} and Miles, {Brittany E.} and Biller, {Beth A.} and Polychronis Patapis and Kadin Worthen and Emily Rickman and Hoch, {Kielan K. W.} and Andrew Skemer and Perrin, {Marshall D.} and Niall Whiteford and Chen, {Christine H.} and Sagnick Mukherjee and Morley, {Caroline V.} and Moran, {Sarah E.} and Mickael Bonnefoy and Simon Petrus and Carter, {Aarynn L.} and Elodie Choquet and Sasha Hinkley and Kimberly Ward-Duong and Leisenring, {Jarron M.} and Millar-Blanchaer, {Maxwell A.} and Laurent Pueyo and Shrishmoy Ray and Steph Sallum and Stapelfeldt, {Karl R.} and Stone, {Jordan M.} and Wang, {Jason J.} and Olivier Absil and Balmer, {William O.} and Anthony Boccaletti and Mariangela Bonavita and Mark Booth and Bowler, {Brendan P.} and Gael Chauvin and Valentin Christiaens and Thayne Currie and Camilla Danielski and Fortney, {Jonathan J.} and Girard, {Julien H.} and Grady, {Carol A.} and Greenbaum, {Alexandra Z.} and Thomas Henning and Hines, {Dean C.} and Markus Janson and Paul Kalas and Jens Kammerer and Kennedy, {Grant M.} and Kenworthy, {Matthew A.} and Pierre Kervella and Pierre-Olivier Lagage and Lew, {Ben W. P.} and Liu, {Michael C.} and Bruce Macintosh and Sebastian Marino and Marley, {Mark S.} and Christian Marois and Matthews, {Elisabeth C.} and Matthews, {Brenda C.} and Dimitri Mawet and McElwain, {Michael W.} and Stanimir Metchev and Meyer, {Michael R.} and Paul Molliere and Eric Pantin and Andreas Quirrenbachm and Isabel Rebollido and Ren, {Bin B.} and Glenn Schneider and Malavika Vasist and Wyatt, {Mark C.} and Yifan Zhou and Briesemeister, {Zackery W.} and Bryan, {Marta L.} and Per Calissendorff and Faustine Catalloube and Gabriele Cugno and Furio, {Matthew De} and Dupuy, {Trent J.} and Factor, {Samuel M.} and Faherty, {Jacqueline K.} and Fitzgerald, {Michael P.} and Kyle Franson and Gonzales, {Eileen C.} and Hood, {Callie E.} and Howe, {Alex R.} and Kraus, {Adam L.} and Masayuki Kuzuhara and Anne-Marie Lagrange and Kellen Lawson and Cecilia Lazzoni and Pengyu Liu and Jorge Llop-Sayson and Lloyd, {James P.} and Martinez, {Raquel A.} and Johan Mazoyer and Quanz, {Sascha P.} and Redai, {Jea Adams} and Matthias Samland and Schlieder, {Joshua E.} and Motohide Tamura and Xianyu Tan and Taichi Uyama and Arthur Vigan and Vos, {Johanna M.} and Kevin Wagner and Wolff, {Schuyler G.} and Marie Ygouf and Xi Zhang and Keming Zhang and Zhoujian Zhang",

note = "Accepted ApJL Iterations of spectra reduced by the ERS team are hosted at this link: https://github.com/bemiles/JWST_VHS1256b_Reduction/tree/main/reduced_spectra",

year = "2023",

month = mar,

day = "22",

doi = "10.3847/2041-8213/acb04a",

language = "English",

volume = "946",

pages = "1--19",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "IOP Publishing",

number = "1",

}

JWST Early Release Science program 1386 collaboration, Miles, BE, Biller, BA, Patapis, P, Worthen, K, Rickman, E, Hoch, KKW, Skemer, A, Perrin, MD, Whiteford, N, Chen, CH, Mukherjee, S, Morley, CV, Moran, SE, Bonnefoy, M, Petrus, S, Carter, AL, Choquet, E, Hinkley, S, Ward-Duong, K, Leisenring, JM, Millar-Blanchaer, MA, Pueyo, L, Ray, S, Sallum, S, Stapelfeldt, KR, Stone, JM, Wang, JJ, Absil, O, Balmer, WO, Boccaletti, A, Bonavita, M, Booth, M, Bowler, BP, Chauvin, G, Christiaens, V, Currie, T, Danielski, C, Fortney, JJ, Girard, JH, Grady, CA, Greenbaum, AZ, Henning, T, Hines, DC, Janson, M, Kalas, P, Kammerer, J, Kennedy, GM, Kenworthy, MA, Kervella, P, Lagage, P-O, Lew, BWP, Liu, MC, Macintosh, B, Marino, S, Marley, MS, Marois, C, Matthews, EC, Matthews, BC, Mawet, D, McElwain, MW, Metchev, S, Meyer, MR, Molliere, P, Pantin, E, Quirrenbachm, A, Rebollido, I, Ren, BB, Schneider, G, Vasist, M, Wyatt, MC, Zhou, Y, Briesemeister, ZW, Bryan, ML, Calissendorff, P, Catalloube, F, Cugno, G, Furio, MD, Dupuy, TJ, Factor, SM, Faherty, JK, Fitzgerald, MP, Franson, K, Gonzales, EC, Hood, CE, Howe, AR, Kraus, AL, Kuzuhara, M, Lagrange, A-M, Lawson, K, Lazzoni, C, Liu, P, Llop-Sayson, J, Lloyd, JP, Martinez, RA, Mazoyer, J, Quanz, SP, Redai, JA, Samland, M, Schlieder, JE, Tamura, M, Tan, X, Uyama, T, Vigan, A, Vos, JM, Wagner, K, Wolff, SG, Ygouf, M, Zhang, X, Zhang, K & Zhang, Z 2023, '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', Astrophysical Journal Letters, vol. 946, no. 1, L6, pp. 1-19. https://doi.org/10.3847/2041-8213/acb04a

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. / JWST Early Release Science program 1386 collaboration; Miles, Brittany E.; Biller, Beth A. et al.
In: Astrophysical Journal Letters, Vol. 946, No. 1, L6, 22.03.2023, p. 1-19.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - 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

AU - JWST Early Release Science program 1386 collaboration

AU - Miles, Brittany E.

AU - Biller, Beth A.

AU - Patapis, Polychronis

AU - Worthen, Kadin

AU - Rickman, Emily

AU - Hoch, Kielan K. W.

AU - Skemer, Andrew

AU - Perrin, Marshall D.

AU - Whiteford, Niall

AU - Chen, Christine H.

AU - Mukherjee, Sagnick

AU - Morley, Caroline V.

AU - Moran, Sarah E.

AU - Bonnefoy, Mickael

AU - Petrus, Simon

AU - Carter, Aarynn L.

AU - Choquet, Elodie

AU - Hinkley, Sasha

AU - Ward-Duong, Kimberly

AU - Leisenring, Jarron M.

AU - Millar-Blanchaer, Maxwell A.

AU - Pueyo, Laurent

AU - Ray, Shrishmoy

AU - Sallum, Steph

AU - Stapelfeldt, Karl R.

AU - Stone, Jordan M.

AU - Wang, Jason J.

AU - Absil, Olivier

AU - Balmer, William O.

AU - Boccaletti, Anthony

AU - Bonavita, Mariangela

AU - Booth, Mark

AU - Bowler, Brendan P.

AU - Chauvin, Gael

AU - Christiaens, Valentin

AU - Currie, Thayne

AU - Danielski, Camilla

AU - Fortney, Jonathan J.

AU - Girard, Julien H.

AU - Grady, Carol A.

AU - Greenbaum, Alexandra Z.

AU - Henning, Thomas

AU - Hines, Dean C.

AU - Janson, Markus

AU - Kalas, Paul

AU - Kammerer, Jens

AU - Kennedy, Grant M.

AU - Kenworthy, Matthew A.

AU - Kervella, Pierre

AU - Lagage, Pierre-Olivier

AU - Lew, Ben W. P.

AU - Liu, Michael C.

AU - Macintosh, Bruce

AU - Marino, Sebastian

AU - Marley, Mark S.

AU - Marois, Christian

AU - Matthews, Elisabeth C.

AU - Matthews, Brenda C.

AU - Mawet, Dimitri

AU - McElwain, Michael W.

AU - Metchev, Stanimir

AU - Meyer, Michael R.

AU - Molliere, Paul

AU - Pantin, Eric

AU - Quirrenbachm, Andreas

AU - Rebollido, Isabel

AU - Ren, Bin B.

AU - Schneider, Glenn

AU - Vasist, Malavika

AU - Wyatt, Mark C.

AU - Zhou, Yifan

AU - Briesemeister, Zackery W.

AU - Bryan, Marta L.

AU - Calissendorff, Per

AU - Catalloube, Faustine

AU - Cugno, Gabriele

AU - Furio, Matthew De

AU - Dupuy, Trent J.

AU - Factor, Samuel M.

AU - Faherty, Jacqueline K.

AU - Fitzgerald, Michael P.

AU - Franson, Kyle

AU - Gonzales, Eileen C.

AU - Hood, Callie E.

AU - Howe, Alex R.

AU - Kraus, Adam L.

AU - Kuzuhara, Masayuki

AU - Lagrange, Anne-Marie

AU - Lawson, Kellen

AU - Lazzoni, Cecilia

AU - Liu, Pengyu

AU - Llop-Sayson, Jorge

AU - Lloyd, James P.

AU - Martinez, Raquel A.

AU - Mazoyer, Johan

AU - Quanz, Sascha P.

AU - Redai, Jea Adams

AU - Samland, Matthias

AU - Schlieder, Joshua E.

AU - Tamura, Motohide

AU - Tan, Xianyu

AU - Uyama, Taichi

AU - Vigan, Arthur

AU - Vos, Johanna M.

AU - Wagner, Kevin

AU - Wolff, Schuyler G.

AU - Ygouf, Marie

AU - Zhang, Xi

AU - Zhang, Keming

AU - Zhang, Zhoujian

N1 - Accepted ApJL Iterations of spectra reduced by the ERS team are hosted at this link: https://github.com/bemiles/JWST_VHS1256b_Reduction/tree/main/reduced_spectra

PY - 2023/3/22

Y1 - 2023/3/22

N2 - We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a <20 M Jup 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.

AB - We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a <20 M Jup 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.

KW - astro-ph.EP

KW - astro-ph.SR

U2 - 10.3847/2041-8213/acb04a

DO - 10.3847/2041-8213/acb04a

M3 - Article

SN - 2041-8205

VL - 946

SP - 1

EP - 19

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L6

ER -

JWST Early Release Science program 1386 collaboration, Miles BE, Biller BA, Patapis P, Worthen K, Rickman E et al. 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. Astrophysical Journal Letters. 2023 Mar 22;946(1):1-19. L6. doi: 10.3847/2041-8213/acb04a

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

Abstract / Description of output

Keywords / Materials (for Non-textual outputs)

Access to Document

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Extending Stellar Astrophysics to Planetary Masses

Astronomy and Astrophysics at Edinburgh

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