{"paper":{"title":"Orbital characterization of GJ1108A system, and comparison of dynamical mass with model-derived mass for resolved binaries","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"A. Moro-Martin, B. Biller, C. A. Grady, C. Thalmann, E. Akiyama, E. L. Turner, E. Serabyn, G. R. Knapp, H. Suto, H. Takami, H. Terada, J. C. Carson, J. E. Schlieder, J. Hashimoto, J. Kwon, J. Morino, J. Wisniewski, K. Mede, K. W. Hodapp, L. Abe, M. Bonnefoy, M. Feldt, M. Goto, M. Hayashi, M. Ishii, M. Iye, M. Janson, M. Kuzuhara, M. Takami, M. Tamura, M. Watanabe, M. W. McElwain, N. Kusakabe, N. Narita, N. Takato, O. Guyon, R. Kandori, R. Suzuki, S. Egner, S. Mayama, S. Miyama, S. S. Hayashi, T. D. Brandt, T. Henning, T. Hirano, T. Kudo, T. Matsuo, T. Mizuki, T. Nakagawa, T. Nishimura, T. Pyo, T. Suenaga, T. Usuda, T. Uyama, T. Yamada, W. Brander, Y. Hayano, Y. H. Takahashi","submitted_at":"2018-08-15T07:59:31Z","abstract_excerpt":"We report an orbital characterization of GJ1108Aab that is a low-mass binary system in pre-main-sequence phase. Via the combination of astrometry using adaptive optics and radial velocity measurements, an eccentric orbital solution of $e$=0.63 is obtained, which might be induced by the Kozai-Lidov mechanism with a widely separated GJ1108B system. Combined with several observed properties, we confirm the system is indeed young. Columba is the most probable moving group, to which the GJ1108A system belongs, although its membership to the group has not been established. If the age of Columba is a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.04996","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"}