{"id":73141,"date":"2022-08-01T11:40:12","date_gmt":"2022-08-01T02:40:12","guid":{"rendered":"https:\/\/www.waseda.jp\/inst\/research\/?p=73141"},"modified":"2022-08-01T11:40:12","modified_gmt":"2022-08-01T02:40:12","slug":"possible-systematic-rotation-in-the-mature-stellar-population-of-a-z9-1-galaxy%ef%bc%88published-in-the-astrophysical-journal-letters-july-2022%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.waseda.jp\/inst\/research\/news\/73141","title":{"rendered":"Possible Systematic Rotation in the Mature Stellar Population of a z=9.1 Galaxy\uff08Published in The Astrophysical Journal Letters, July 2022\uff09"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n
Journal Title
\n\/\u63b2\u8f09\u30b8\u30e3\u30fc\u30ca\u30eb\u540d<\/td>\n		The Astrophysical Journal Letters<\/td>\n<\/tr>\n
Publication Year and Month
\n\/\u63b2\u8f09\u5e74\u6708<\/td>\n		July, 2022<\/td>\n<\/tr>\n
Paper Title
\n\/\u8ad6\u6587\u30bf\u30a4\u30c8\u30eb<\/td>\n		Possible Systematic Rotation in the Mature Stellar Population of a z=9.1 Galaxy<\/td>\n<\/tr>\n
DOI
\n\/\u8ad6\u6587DOI<\/td>\n		10.3847\/2041-8213\/ac7447<\/a><\/td>\n<\/tr>\n
\u00a0Author of Waseda University
\n\/\u672c\u5b66\u306e\u8457\u8005<\/td>\n		INOUE, Akio(Professor(without tenure), Faculty of Science and Engineering, School of Advanced Science and Engineering):Corresponding Author<\/td>\n<\/tr>\n
Related Websites
\n\/\u95a2\u9023Web<\/td>\n		–<\/td>\n<\/tr>\n
Abstract
\n\/\u6284\u9332<\/td>\n		We present new observations with the Atacama Large Millimeter\/submillimeter Array for a gravitationally lensed galaxy at\u00a0z<\/i>\u00a0= 9.1, MACS1149-JD1. [O\u00a0iii] 88\u00a0\u03bc<\/i>m emission is detected at 10\u03c3<\/i>\u00a0with a spatial resolution of \u223c0.3 kpc in the source plane, enabling the most distant morphokinematic study of a galaxy. The [O\u00a0iii] emission is distributed smoothly without any resolved clumps and shows a clear velocity gradient with \u0394V<\/i>obs<\/sub>\/2\u03c3<\/i>tot<\/sub>\u00a0= 0.84 \u00b1 0.23, where \u0394V<\/i>obs<\/sub>\u00a0is the observed maximum velocity difference and\u00a0\u03c3<\/i>tot<\/sub>\u00a0is the velocity dispersion measured in the spatially integrated line profile, suggesting a rotating system. Assuming a geometrically thin self-gravitating rotation disk model, we obtain\u00a0\"${V}_{\\mathrm{rot}}\/{\\sigma, where\u00a0V<\/i>rot<\/sub>\u00a0and\u00a0\u03c3<\/i>V<\/i><\/sub>\u00a0are the rotation velocity and velocity dispersion, respectively, still consistent with rotation. The resulting disk mass of\u00a0\"${0.65}_{-0.40}^{+1.37}\\times\u00a0M<\/i>\u2299<\/sub>\u00a0is consistent with being associated with the stellar mass identified with a 300 Myr old stellar population independently indicated by a Balmer break in the spectral energy distribution. We conclude that the most of the dynamical mass is associated with the previously identified mature stellar population that formed at\u00a0z<\/i>\u00a0\u223c 15.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Journal Title \/\u63b2\u8f09\u30b8\u30e3\u30fc\u30ca\u30eb\u540d The Astrophysical Journal Letters Publication Year and Month \/\u63b2\u8f09\u5e74\u6708 July, 2022 Paper Ti […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[218,217],"class_list":["post-73141","post","type-post","status-publish","format-standard","hentry","tag-impact-en","tag-impact"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/73141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/comments?post=73141"}],"version-history":[{"count":1,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/73141\/revisions"}],"predecessor-version":[{"id":73144,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/73141\/revisions\/73144"}],"wp:attachment":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/media?parent=73141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/categories?post=73141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/tags?post=73141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}