{"paper":{"title":"Direct Imaging Detection of Methane in the Atmosphere of GJ 504 b","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"A. Moro-Martin, C. Grady, C. Thalmann, D. Spiegel, D. Tomono, E. Serabyn, E. Turner, G. Knapp, H. Suto, H. Takami, H. Terada, J. Carson, J. Hashimoto, J.-I. Morino, J. Kwon, J. Schlieder, J. Wisniewski, K. Hodapp, K. Mede, L. Abe, M. Bonnefoy, M. Feldt, M. Goto, M. Hayashi, M. Ishii, M. Iye, M. Janson, M. Kuzuhara, M. McElwain, M. Takami, M. Tamura, M. Watanabe, N. Kusakabe, N. Takato, N. Zimmerman, O. Guyon, R. Kandori, R. Suzuki, S. Egner, S. Hayashi, S. Miyama, S. Sorahana, T. Brandt, T. Currie, T. Henning, T. Kotani, T. Kudo, T. Matsuo, T. Nakagawa, T. Nishimura, T.-S. Pyo, T. Suenaga, T. Usuda, T. Yamada, W. Brandner, Y. Hayano, Y. Takahashi","submitted_at":"2013-10-15T20:00:05Z","abstract_excerpt":"Most exoplanets detected by direct imaging so far have been characterized by relatively hot (> ~1000 K) and cloudy atmospheres. A surprising feature in some of their atmospheres has been a distinct lack of methane, possibly implying non-equilibrium chemistry. Recently, we reported the discovery of a planetary companion to the Sun-like star GJ 504 using Subaru/HiCIAO within the SEEDS survey. The planet is substantially colder (<600 K) than previously imaged planets, and has indications of fewer clouds, which implies that it represents a new class of planetary atmospheres with expected similarit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.4183","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}