{"paper":{"title":"SMA and ALMA Studies of Disk- and Planet Formation around Low-mass Protostars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Chin-Fei Lee, Evaria Puspitaningrum, Hauyu Baobab Liu, Hsi-Wei Yen, Kazuya Saigo, Kengo Tomida, Kohji Tomisaka, Masahiro N. Machida, Masao Saito, Nagayoshi Ohashi, Naomi Hirano, Patrick M. Koch, Paul T. P. Ho, Pin-Gao Gu, Ruben Krasnopolsky, Shigehisa Takakuwa, Ti-Lin Chou, Yuri Aikawa, Yusuke Aso","submitted_at":"2017-11-01T17:16:02Z","abstract_excerpt":"We report our current SMA and ALMA studies of disk and planet formation around protostars. We have revealed that $r \\gtrsim$100 AU scale disks in Keplerian rotation are ubiquitous around Class I sources. These Class I Keplerian disks are often embedded in rotating and infalling protostellar envelopes. The infalling speeds of the protostellar envelopes are typically $\\sim$ 3-times smaller than the free-fall velocities, and the rotational profiles follow the $r^{-1}$ profile, that is, rotation with the conserved specific angular momentum. Our latest high-resolution ($\\sim$0$\\farcs$5) ALMA studie"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.00447","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"}