Gemini planet imager spectroscopy of the HR 8799 planets c and d

Patrick Ingraham; Mark S. Marley; Didier Saumon; Christian Marois; Bruce Macintosh; Travis Barman; Brian Bauman; Adam S. Burrows; Jeffrey K. Chilcote; Robert J. De Rosa; Daren Dillon; René Doyon; Jennifer Dunn; Darren Erikson; Michael P. Fitzgerald; Donald Gavel; Stephen J. Goodsell; James R. Graham; Markus Hartung; Pascale Hibon; Paul G. Kalas; Quinn Konopacky; James A. Larkin; Jérôme Maire; Franck Marchis; James McBride; Max Millar-Blanchaer; Katie M. Morzinski; Andrew Norton; Rebecca Oppenheimer; Dave W. Palmer; Jenny Patience; Marshall D. Perrin; Lisa A. Poyneer; Laurent Pueyo; Fredrik Rantakyrö; Naru Sadakuni; Leslie Saddlemyer; Dmitry Savransky; Rémi Soummer; Anand Sivaramakrishnan; Inseok Song; Sandrine Thomas; J. Kent Wallace; Sloane J. Wiktorowicz; Schuyler G. Wolff

doi:10.1088/2041-8205/794/1/L15

Gemini planet imager spectroscopy of the HR 8799 planets c and d

Patrick Ingraham, Mark S. Marley, Didier Saumon, Christian Marois, Bruce Macintosh, Travis Barman, Brian Bauman, Adam S. Burrows, Jeffrey K. Chilcote, Robert J. De Rosa, Daren Dillon, René Doyon, Jennifer Dunn, Darren Erikson, Michael P. Fitzgerald, Donald Gavel, Stephen J. Goodsell, James R. Graham, Markus Hartung, Pascale HibonPaul G. Kalas, Quinn Konopacky, James A. Larkin, Jérôme Maire, Franck Marchis, James McBride, Max Millar-Blanchaer, Katie M. Morzinski, Andrew Norton, Rebecca Oppenheimer, Dave W. Palmer, Jenny Patience, Marshall D. Perrin, Lisa A. Poyneer, Laurent Pueyo, Fredrik Rantakyrö, Naru Sadakuni, Leslie Saddlemyer, Dmitry Savransky, Rémi Soummer, Anand Sivaramakrishnan, Inseok Song, Sandrine Thomas, J. Kent Wallace, Sloane J. Wiktorowicz, Schuyler G. Wolff

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Abstract

During the first-light run of the Gemini Planet Imager we obtained K-band spectra of exoplanets HR 8799 c and d. Analysis of the spectra indicates that planet d may be warmer than planet c. Comparisons to recent patchy cloud models and previously obtained observations over multiple wavelengths confirm that thick clouds combined with horizontal variation in the cloud cover generally reproduce the planets' spectral energy distributions. When combined with the 3 to 4 μm photometric data points, the observations provide strong constraints on the atmospheric methane content for both planets. The data also provide further evidence that future modeling efforts must include cloud opacity, possibly including cloud holes, disequilibrium chemistry, and super-solar metallicity.

Original language	English (US)
Article number	L15
Journal	Astrophysical Journal Letters
Volume	794
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/794/1/L15
State	Published - Oct 10 2014

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

infrared: planetary systems
instrumentation: adaptive optics
instrumentation: high angular resolution
planets and satellites: atmospheres
planets and satellites: gaseous planets
techniques: imaging spectroscopy

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10.1088/2041-8205/794/1/L15

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Ingraham, P., Marley, M. S., Saumon, D., Marois, C., Macintosh, B., Barman, T., Bauman, B., Burrows, A. S., Chilcote, J. K., De Rosa, R. J., Dillon, D., Doyon, R., Dunn, J., Erikson, D., Fitzgerald, M. P., Gavel, D., Goodsell, S. J., Graham, J. R., Hartung, M., ... Wolff, S. G. (2014). Gemini planet imager spectroscopy of the HR 8799 planets c and d. Astrophysical Journal Letters, 794(1), Article L15. https://doi.org/10.1088/2041-8205/794/1/L15

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title = "Gemini planet imager spectroscopy of the HR 8799 planets c and d",

abstract = "During the first-light run of the Gemini Planet Imager we obtained K-band spectra of exoplanets HR 8799 c and d. Analysis of the spectra indicates that planet d may be warmer than planet c. Comparisons to recent patchy cloud models and previously obtained observations over multiple wavelengths confirm that thick clouds combined with horizontal variation in the cloud cover generally reproduce the planets' spectral energy distributions. When combined with the 3 to 4 μm photometric data points, the observations provide strong constraints on the atmospheric methane content for both planets. The data also provide further evidence that future modeling efforts must include cloud opacity, possibly including cloud holes, disequilibrium chemistry, and super-solar metallicity.",

keywords = "infrared: planetary systems, instrumentation: adaptive optics, instrumentation: high angular resolution, planets and satellites: atmospheres, planets and satellites: gaseous planets, techniques: imaging spectroscopy",

author = "Patrick Ingraham and Marley, {Mark S.} and Didier Saumon and Christian Marois and Bruce Macintosh and Travis Barman and Brian Bauman and Burrows, {Adam S.} and Chilcote, {Jeffrey K.} and {De Rosa}, {Robert J.} and Daren Dillon and Ren{\'e} Doyon and Jennifer Dunn and Darren Erikson and Fitzgerald, {Michael P.} and Donald Gavel and Goodsell, {Stephen J.} and Graham, {James R.} and Markus Hartung and Pascale Hibon and Kalas, {Paul G.} and Quinn Konopacky and Larkin, {James A.} and J{\'e}r{\^o}me Maire and Franck Marchis and James McBride and Max Millar-Blanchaer and Morzinski, {Katie M.} and Andrew Norton and Rebecca Oppenheimer and Palmer, {Dave W.} and Jenny Patience and Perrin, {Marshall D.} and Poyneer, {Lisa A.} and Laurent Pueyo and Fredrik Rantakyr{\"o} and Naru Sadakuni and Leslie Saddlemyer and Dmitry Savransky and R{\'e}mi Soummer and Anand Sivaramakrishnan and Inseok Song and Sandrine Thomas and {Kent Wallace}, J. and Wiktorowicz, {Sloane J.} and Wolff, {Schuyler G.}",

year = "2014",

month = oct,

day = "10",

doi = "10.1088/2041-8205/794/1/L15",

language = "English (US)",

volume = "794",

journal = "Astrophysical Journal Letters",

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Ingraham, P, Marley, MS, Saumon, D, Marois, C, Macintosh, B, Barman, T, Bauman, B, Burrows, AS, Chilcote, JK, De Rosa, RJ, Dillon, D, Doyon, R, Dunn, J, Erikson, D, Fitzgerald, MP, Gavel, D, Goodsell, SJ, Graham, JR, Hartung, M, Hibon, P, Kalas, PG, Konopacky, Q, Larkin, JA, Maire, J, Marchis, F, McBride, J, Millar-Blanchaer, M, Morzinski, KM, Norton, A, Oppenheimer, R, Palmer, DW, Patience, J, Perrin, MD, Poyneer, LA, Pueyo, L, Rantakyrö, F, Sadakuni, N, Saddlemyer, L, Savransky, D, Soummer, R, Sivaramakrishnan, A, Song, I, Thomas, S, Kent Wallace, J, Wiktorowicz, SJ & Wolff, SG 2014, 'Gemini planet imager spectroscopy of the HR 8799 planets c and d', Astrophysical Journal Letters, vol. 794, no. 1, L15. https://doi.org/10.1088/2041-8205/794/1/L15

TY - JOUR

T1 - Gemini planet imager spectroscopy of the HR 8799 planets c and d

AU - Ingraham, Patrick

AU - Marley, Mark S.

AU - Saumon, Didier

AU - Marois, Christian

AU - Macintosh, Bruce

AU - Barman, Travis

AU - Bauman, Brian

AU - Burrows, Adam S.

AU - Chilcote, Jeffrey K.

AU - De Rosa, Robert J.

AU - Dillon, Daren

AU - Doyon, René

AU - Dunn, Jennifer

AU - Erikson, Darren

AU - Fitzgerald, Michael P.

AU - Gavel, Donald

AU - Goodsell, Stephen J.

AU - Graham, James R.

AU - Hartung, Markus

AU - Hibon, Pascale

AU - Kalas, Paul G.

AU - Konopacky, Quinn

AU - Larkin, James A.

AU - Maire, Jérôme

AU - Marchis, Franck

AU - McBride, James

AU - Millar-Blanchaer, Max

AU - Morzinski, Katie M.

AU - Norton, Andrew

AU - Oppenheimer, Rebecca

AU - Palmer, Dave W.

AU - Patience, Jenny

AU - Perrin, Marshall D.

AU - Poyneer, Lisa A.

AU - Pueyo, Laurent

AU - Rantakyrö, Fredrik

AU - Sadakuni, Naru

AU - Saddlemyer, Leslie

AU - Savransky, Dmitry

AU - Soummer, Rémi

AU - Sivaramakrishnan, Anand

AU - Song, Inseok

AU - Thomas, Sandrine

AU - Kent Wallace, J.

AU - Wiktorowicz, Sloane J.

AU - Wolff, Schuyler G.

PY - 2014/10/10

Y1 - 2014/10/10

N2 - During the first-light run of the Gemini Planet Imager we obtained K-band spectra of exoplanets HR 8799 c and d. Analysis of the spectra indicates that planet d may be warmer than planet c. Comparisons to recent patchy cloud models and previously obtained observations over multiple wavelengths confirm that thick clouds combined with horizontal variation in the cloud cover generally reproduce the planets' spectral energy distributions. When combined with the 3 to 4 μm photometric data points, the observations provide strong constraints on the atmospheric methane content for both planets. The data also provide further evidence that future modeling efforts must include cloud opacity, possibly including cloud holes, disequilibrium chemistry, and super-solar metallicity.

AB - During the first-light run of the Gemini Planet Imager we obtained K-band spectra of exoplanets HR 8799 c and d. Analysis of the spectra indicates that planet d may be warmer than planet c. Comparisons to recent patchy cloud models and previously obtained observations over multiple wavelengths confirm that thick clouds combined with horizontal variation in the cloud cover generally reproduce the planets' spectral energy distributions. When combined with the 3 to 4 μm photometric data points, the observations provide strong constraints on the atmospheric methane content for both planets. The data also provide further evidence that future modeling efforts must include cloud opacity, possibly including cloud holes, disequilibrium chemistry, and super-solar metallicity.

KW - infrared: planetary systems

KW - instrumentation: adaptive optics

KW - instrumentation: high angular resolution

KW - planets and satellites: atmospheres

KW - planets and satellites: gaseous planets

KW - techniques: imaging spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=84907538981&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84907538981&partnerID=8YFLogxK

U2 - 10.1088/2041-8205/794/1/L15

DO - 10.1088/2041-8205/794/1/L15

M3 - Article

AN - SCOPUS:84907538981

SN - 2041-8205

VL - 794

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L15

ER -

Gemini planet imager spectroscopy of the HR 8799 planets c and d

Abstract

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Keywords

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