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Gemini Planet Imager Spectroscopy of the HR 8799 Planets c and d

Author(s): Ingraham, Patrick; Marley, Mark S; Saumon, Didier; Marois, Christian; Macintosh, Bruce; et al

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dc.contributor.authorIngraham, Patrick-
dc.contributor.authorMarley, Mark S-
dc.contributor.authorSaumon, Didier-
dc.contributor.authorMarois, Christian-
dc.contributor.authorMacintosh, Bruce-
dc.contributor.authorBarman, Travis-
dc.contributor.authorBauman, Brian-
dc.contributor.authorBurrows, Adam S.-
dc.contributor.authorChilcote, Jeffrey K-
dc.contributor.authorDe Rosa, Robert J-
dc.contributor.authorDillon, Daren-
dc.contributor.authorDoyon, René-
dc.contributor.authorDunn, Jennifer-
dc.contributor.authorErikson, Darren-
dc.contributor.authorFitzgerald, Michael P.-
dc.contributor.authorGavel, Donald-
dc.contributor.authorGoodsell, Stephen J-
dc.contributor.authorGraham, James R-
dc.contributor.authorHartung, Markus-
dc.contributor.authorHibon, Pascale-
dc.contributor.authorKalas, Paul G-
dc.contributor.authorKonopacky, Quinn-
dc.contributor.authorLarkin, James A-
dc.contributor.authorMaire, Jérôme-
dc.contributor.authorMarchis, Franck-
dc.contributor.authorMcBride, James-
dc.contributor.authorMillar-Blanchaer, Maxwell A.-
dc.contributor.authorMorzinski, Katie M.-
dc.contributor.authorNorton, Andrew-
dc.contributor.authorOppenheimer, Rebecca-
dc.contributor.authorPalmer, Dave W-
dc.contributor.authorPatience, Jenny-
dc.contributor.authorPerrin, Marshall D-
dc.contributor.authorPoyneer, Lisa A.-
dc.contributor.authorPueyo, Laurent-
dc.contributor.authorRantakyrö, Fredrik T.-
dc.contributor.authorSadakuni, Naru-
dc.contributor.authorSaddlemyer, Leslie-
dc.contributor.authorSavransky, Dmitry-
dc.contributor.authorSoummer, Rémi-
dc.contributor.authorSivaramakrishnan, Anand-
dc.contributor.authorSong, Inseok-
dc.contributor.authorThomas, Sandrine-
dc.contributor.authorWallace, J Kent-
dc.contributor.authorWiktorowicz, Sloane J.-
dc.contributor.authorWolff, Schuyler G-
dc.identifier.citationIngraham, Patrick, Marley, Mark S, Saumon, Didier, Marois, Christian, Macintosh, Bruce, Barman, Travis, Bauman, Brian, Burrows, Adam, Chilcote, Jeffrey K, De Rosa, Robert J, Dillon, Daren, Doyon, René, Dunn, Jennifer, Erikson, Darren, Fitzgerald, Michael P, Gavel, Donald, Goodsell, Stephen J, Graham, James R, Hartung, Markus, Hibon, Pascale, Kalas, Paul G, Konopacky, Quinn, Larkin, James A, Maire, Jérôme, Marchis, Franck, McBride, James, Millar-Blanchaer, Max, Morzinski, Katie M, Norton, Andrew, Oppenheimer, Rebecca, Palmer, Dave W, Patience, Jenny, Perrin, Marshall D, Poyneer, Lisa A, Pueyo, Laurent, Rantakyrö, Fredrik, Sadakuni, Naru, Saddlemyer, Leslie, Savransky, Dmitry, Soummer, Rémi, Sivaramakrishnan, Anand, Song, Inseok, Thomas, Sandrine, Wallace, J Kent, Wiktorowicz, Sloane J, Wolff, Schuyler G. (2014). Gemini Planet Imager Spectroscopy of the HR 8799 Planets c and d. \apj, 794 (L15 - L15. doi:10.1088/2041-8205/794/1/L15en_US
dc.description.abstractDuring 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 4μm photometric data points, the observations provide strong constraints on the atmospheric methanec ontent 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.en_US
dc.relation.ispartofAstrophysical Journalen_US
dc.rightsFinal published version. This is an open access article.en_US
dc.titleGemini Planet Imager Spectroscopy of the HR 8799 Planets c and den_US
dc.typeJournal Articleen_US

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