



{"id":5417,"date":"2026-05-14T12:57:10","date_gmt":"2026-05-14T03:57:10","guid":{"rendered":"https:\/\/sci.nao.ac.jp\/main\/?p=5417"},"modified":"2026-05-14T12:57:10","modified_gmt":"2026-05-14T03:57:10","slug":"hightlight20260514","status":"publish","type":"post","link":"https:\/\/sci.nao.ac.jp\/main\/highlights\/hightlight20260514","title":{"rendered":"\u5b87\u5b99\u521d\u671f\u306b\u89b3\u6e2c\u53f2\u4e0a\u6700\u5c11\u306e\u9178\u7d20\u91cf\u3092\u6301\u3064\u6975\u5c0f\u9280\u6cb3\u3092\u767a\u898b\u2015\u5b87\u5b99\u306e\u5316\u77f3\u5929\u4f53\u306e\u8d77\u6e90\u306b\u8feb\u308b\u2015"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"1280\" src=\"https:\/\/sci.nao.ac.jp\/main\/wp-content\/uploads\/2026\/05\/image.png\" alt=\"\" class=\"wp-image-5418\" srcset=\"https:\/\/sci.nao.ac.jp\/main\/wp-content\/uploads\/2026\/05\/image.png 1280w, https:\/\/sci.nao.ac.jp\/main\/wp-content\/uploads\/2026\/05\/image-768x768.png 768w, https:\/\/sci.nao.ac.jp\/main\/wp-content\/uploads\/2026\/05\/image-220x220.png 220w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><figcaption class=\"wp-element-caption\">\u5de8\u5927\u9280\u6cb3\u56e3\u306e\u91cd\u529b\u30ec\u30f3\u30ba\u304c\u66b4\u3044\u305f\u6975\u5c0f\u9280\u6cb3LAP1-B\u306e\u7d20\u9854\uff08\u5de6\u4e0a\u306e\u62e1\u5927\u753b\u50cf\uff09\u3002\u30b8\u30a7\u30a4\u30e0\u30ba\u30fb\u30a6\u30a7\u30c3\u30d6\u5b87\u5b99\u671b\u9060\u93e1\uff08JWST\uff09\u306e\u8fd1\u8d64\u5916\u7dda\u5206\u5149\u5668\u306e\u30c7\u30fc\u30bf\u30923\u8272\u5408\u6210\u3057\u3066\u4f5c\u6210\u3057\u305f\u3002\u3053\u306e\u9280\u6cb3\u306f\u661f\u306e\u6570\u304c\u5c11\u306a\u304f\u6975\u3081\u3066\u6697\u3044\u305f\u3081\u3001JWST\u306e\u8fd1\u8d64\u5916\u7dda\u30ab\u30e1\u30e9\u3067\u64ae\u5f71\u3057\u305f\u5de8\u5927\u9280\u6cb3\u56e3\u306e\u753b\u50cf\u3067\u306f\u305d\u306e\u59ff\u3092\u78ba\u8a8d\u3067\u304d\u305a\u3001\u5206\u5149\u89b3\u6e2c\u306b\u3088\u3063\u3066\u521d\u3081\u3066\u6349\u3048\u308b\u3053\u3068\u306b\u6210\u529f\u3057\u305f\u3002\u62e1\u5927\u753b\u50cf\u3067\u898b\u308b\u9280\u6cb3\u306e\u5f62\u72b6\u306f\u3001\u9280\u6cb3\u5185\u306e\u30ac\u30b9\u306e\u904b\u52d5\u3092\u8868\u3057\u3066\u3044\u308b\u3002\uff08\u30af\u30ec\u30b8\u30c3\u30c8\uff1aNASA, ESA, CSA &amp; K. Nakajima et al., Nature\uff09\u00a0<a href=\"https:\/\/www.nao.ac.jp\/contents\/news\/science\/2026\/20260514-dos-fig-full.jpg\" target=\"_blank\" rel=\"noreferrer noopener\">\u00a0\u753b\u50cf\uff08703KB\uff09<\/a><\/figcaption><\/figure>\n\n\n\n<p>\u5b87\u5b99\u8a95\u751f\u304b\u3089\u7d048\u5104\u5e74\u5f8c\u306e\u6642\u4ee3\u306b\u3042\u308b\u6975\u3081\u3066\u6697\u304f\u5c0f\u3055\u306a\u6975\u5c0f\u9280\u6cb3\u300cLAP1-B\u300d\u3092\u3001\u30b8\u30a7\u30a4\u30e0\u30ba\u30fb\u30a6\u30a7\u30c3\u30d6\u5b87\u5b99\u671b\u9060\u93e1\uff08JWST\uff09\u3067\u89b3\u6e2c\u3057\u305f\u7d50\u679c\u3001\u3053\u306e\u9280\u6cb3\u306b\u542b\u307e\u308c\u308b\u9178\u7d20\u306e\u5272\u5408\u304c\u89b3\u6e2c\u53f2\u4e0a\u6700\u5c11\u306e\u5024\u3067\u3042\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u307e\u3057\u305f\u3002\u3055\u3089\u306b\u89e3\u6790\u3057\u305f\u3068\u3053\u308d\u3001\u3053\u306e\u9280\u6cb3\u306f\u3001\u73fe\u5728\u306e\u5929\u306e\u5ddd\u9280\u6cb3\u306e\u5468\u8fba\u306b\u5b58\u5728\u3057\u6975\u3081\u3066\u661f\u306e\u6570\u304c\u5c11\u306a\u3044\u8b0e\u306e\u5929\u4f53\u300c\u8d85\u4f4e\u5149\u5ea6\u77ee\u5c0f\uff08\u308f\u3044\u3057\u3087\u3046\uff09\u9280\u6cb3\u300d\uff08Ultra-Faint Dwarf\u3001\u4ee5\u4e0bUFD\u9280\u6cb3\uff09\u306e\u3001\u751f\u307e\u308c\u3066\u9593\u3082\u306a\u3044\u9803\u306e\u59ff\u304b\u3082\u3057\u308c\u306a\u3044\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3057\u305f\u3002\u5b87\u5b99\u521d\u671f\u306b\u8a95\u751f\u3057\u305f\u5316\u77f3\u5929\u4f53\u3068\u8003\u3048\u3089\u308c\u3066\u304d\u305fUFD\u9280\u6cb3\u306b\u3064\u3044\u3066\u3001\u305d\u306e\u8a95\u751f\u3068\u9032\u5316\u306e\u8b0e\u3092\u89e3\u304d\u660e\u304b\u3059\u7cf8\u53e3\u3068\u3057\u3066\u753b\u671f\u7684\u306a\u6210\u679c\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30d3\u30c3\u30b0\u30d0\u30f3\u76f4\u5f8c\u306e\u5b87\u5b99\u306b\u306f\u6c34\u7d20\u3068\u30d8\u30ea\u30a6\u30e0\u3068\u3044\u3063\u305f\u8efd\u3044\u5143\u7d20\u3057\u304b\u5b58\u5728\u305b\u305a\u3001\u9178\u7d20\u3084\u70ad\u7d20\u306a\u3069\u306e\u91cd\u3044\u5143\u7d20\u306f\u305d\u306e\u5f8c\u306b\u8d77\u3053\u3063\u305f\u6052\u661f\u306e\u8a95\u751f\u3068\u9032\u5316\u306b\u3088\u3063\u3066\u4f5c\u3089\u308c\u307e\u3057\u305f\u3002\u5b87\u5b99\u3067\u6700\u521d\u306b\u8a95\u751f\u3057\u305f\u300c\u521d\u4ee3\u661f\u300d\u304c\u3044\u3064\u3069\u306e\u3088\u3046\u306b\u5143\u7d20\u3092\u4f5c\u308a\u51fa\u3057\u59cb\u3081\u305f\u306e\u304b\u3001\u305d\u308c\u3092\u63a2\u308b\u3053\u3068\u306f\u3001\u73fe\u4ee3\u5929\u6587\u5b66\u306b\u304a\u3051\u308b\u6700\u91cd\u8981\u8ab2\u984c\u306e\u4e00\u3064\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u5b87\u5b99\u521d\u671f\u306e\u9280\u6cb3\u306f\u3042\u307e\u308a\u306b\u6697\u304f\u5c0f\u3055\u3044\u305f\u3081\u3001\u8a73\u3057\u304f\u8abf\u3079\u308b\u3053\u3068\u306f\u6975\u3081\u3066\u56f0\u96e3\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u91d1\u6ca2\u5927\u5b66\u3084\u56fd\u7acb\u5929\u6587\u53f0\u306a\u3069\u306e\u7814\u7a76\u8005\u304b\u3089\u6210\u308b\u56fd\u969b\u7814\u7a76\u30c1\u30fc\u30e0\u306f\u3001\u8d64\u5916\u7dda\u57df\u306e\u5206\u5149\u80fd\u529b\u304c\u6975\u3081\u3066\u9ad8\u3044JWST\u3092\u7528\u3044\u3001\u3055\u3089\u306b\u5de8\u5927\u9280\u6cb3\u56e3\u306e\u91cd\u529b\u3067\u9060\u304f\u306e\u5929\u4f53\u304b\u3089\u306e\u5149\u304c\u5897\u5e45\u3055\u308c\u308b\u91cd\u529b\u30ec\u30f3\u30ba\u52b9\u679c\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001LAP1-B\u3092\u6349\u3048\u3001\u8a73\u7d30\u306a\u6027\u8cea\u3092\u660e\u3089\u304b\u306b\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u9280\u6cb3\u306f\u3001\u3053\u308c\u307e\u3067\u89b3\u6e2c\u3055\u308c\u305f\u9280\u6cb3\u306e\u4e2d\u3067\u3082\u9178\u7d20\u5b58\u5728\u6bd4\u304c\u6975\u7aef\u306b\u5c11\u306a\u304f\u3001\u307e\u305f\u9178\u7d20\u306b\u6bd4\u3079\u3066\u70ad\u7d20\u306e\u5272\u5408\u304c\u6975\u3081\u3066\u9ad8\u3044\u3068\u3044\u3046\u7279\u5fb4\u3092\u793a\u3057\u307e\u3057\u305f\u3002\u5f8c\u8005\u306f\u3001\u7406\u8ad6\u7684\u306b\u4e88\u6e2c\u3055\u308c\u305f\u521d\u4ee3\u661f\u304c\u653e\u51fa\u3059\u308b\u5143\u7d20\u5206\u5e03\u3068\u3088\u304f\u4e00\u81f4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3055\u3089\u306b\u3053\u306e\u9280\u6cb3\u306e\u8cea\u91cf\u3092\u63a8\u5b9a\u3057\u305f\u3068\u3053\u308d\u3001\u9280\u6cb3\u3092\u69cb\u6210\u3059\u308b\u661f\u306e\u7dcf\u8cea\u91cf\u306f\u592a\u967d\u306e3300\u500d\u4ee5\u4e0b\u3068\u6975\u3081\u3066\u5c0f\u3055\u304f\u3001\u9280\u6cb3\u306e\u8cea\u91cf\u306e\u5927\u90e8\u5206\u304c\u30c0\u30fc\u30af\u30de\u30bf\u30fc\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3082\u5206\u304b\u308a\u307e\u3057\u305f\u3002\u3053\u306e\u7279\u5fb4\u306f\u3001UFD\u9280\u6cb3\u3068\u3088\u304f\u4f3c\u3066\u3044\u307e\u3059\u3002\u4eca\u56de\u306e\u6210\u679c\u306f\u3001UFD\u9280\u6cb3\u306e\u8a95\u751f\u3084\u9032\u5316\u3092\u89e3\u660e\u3059\u308b\u91cd\u8981\u306a\u624b\u639b\u304b\u308a\u306b\u306a\u308b\u3068\u671f\u5f85\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7814\u7a76\u30c1\u30fc\u30e0\u306e\u4ee3\u8868\u3067\u3042\u308b\u91d1\u6ca2\u5927\u5b66\u306e\u4e2d\u5cf6\u738b\u5f66\uff08\u306a\u304b\u3058\u307e\u30fb\u304d\u307f\u3072\u3053\uff09\u51c6\u6559\u6388\u306f\u3001\u300c\u30c7\u30fc\u30bf\u306b\u73fe\u308c\u305f\u5727\u5012\u7684\u306a\u9178\u7d20\u306e\u6b20\u4e4f\u3092\u898b\u305f\u3068\u304d\u306f\u3001\u601d\u308f\u305a\u8208\u596e\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u307b\u3069\u30d4\u30e5\u30a2\u306a\u72b6\u614b\u306e\u9280\u6cb3\u304c\u5b58\u5728\u3057\u3001\u305d\u306e\u59ff\u3092\u3053\u3053\u307e\u3067\u514b\u660e\u306b\u6349\u3048\u3089\u308c\u305f\u3053\u3068\u306f\u3001\u307e\u3055\u306b\u9a5a\u304d\u3067\u3059\u300d\u3068\u8a9e\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u7814\u7a76\u30c1\u30fc\u30e0\u306e\u4e3b\u8981\u30e1\u30f3\u30d0\u30fc\u3067\u3042\u308b\u56fd\u7acb\u5929\u6587\u53f0\u304a\u3088\u3073\u6771\u4eac\u5927\u5b66\u5b87\u5b99\u7dda\u7814\u7a76\u6240\u306e\u5927\u5185\u6b63\u5df1\uff08\u304a\u304a\u3046\u3061\u30fb\u307e\u3055\u307f\uff09\u6559\u6388\u306f\u3001\u300c\u3053\u306e\u9280\u6cb3\u3092\u8a73\u3057\u304f\u8abf\u3079\u308b\u3053\u3068\u3067\u3001UFD\u9280\u6cb3\u304c\u306a\u305c\u5b87\u5b99\u306e\u5316\u77f3\u3068\u3057\u3066\u73fe\u5728\u307e\u3067\u305d\u306e\u59ff\u3092\u4fdd\u3063\u3066\u3044\u308b\u306e\u304b\u3001\u305d\u306e\u8b0e\u306b\u8feb\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3068\u671f\u5f85\u3057\u3066\u3044\u307e\u3059\u300d\u3068\u4eca\u5f8c\u3092\u5c55\u671b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u767a\u8868\u8005<\/h3>\n\n\n\n<p>\u4e2d\u5cf6\u738b\u5f66\uff08\u91d1\u6ca2\u5927\u5b66 \u56fd\u969b\u57fa\u5e79\u6559\u80b2\u9662GS\u6559\u80b2\u7cfb \u51c6\u6559\u6388\uff09<br>\u5927\u5185\u6b63\u5df1\uff08\u81ea\u7136\u79d1\u5b66\u7814\u7a76\u6a5f\u69cb\u56fd\u7acb\u5929\u6587\u53f0 \u79d1\u5b66\u7814\u7a76\u90e8\u3001\u6771\u4eac\u5927\u5b66\u5b87\u5b99\u7dda\u7814\u7a76\u6240 \u6559\u6388\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5171\u540c\u767a\u8868\u6a5f\u95a2<\/h3>\n\n\n\n<p>\u91d1\u6ca2\u5927\u5b66<br>\u81ea\u7136\u79d1\u5b66\u7814\u7a76\u6a5f\u69cb \u56fd\u7acb\u5929\u6587\u53f0<br>\u6771\u4eac\u5927\u5b66\u5b87\u5b99\u7dda\u7814\u7a76\u6240<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u767a\u8868\u8ad6\u6587<\/h3>\n\n\n\n<p>K. Nakajima et al. \u201cAn ultra-faint, chemically primitive galaxy forming in the reionization era\u201d, in Nature, DOI:\u00a0<a href=\"https:\/\/www.nature.com\/articles\/s41586-026-10374-1\" target=\"_blank\" rel=\"noreferrer noopener\">10.1038\/s41586-026-10374-1\u00a0<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u95a2\u9023\u30ea\u30f3\u30af<\/h3>\n\n\n\n<p><a href=\"https:\/\/www.icrr.u-tokyo.ac.jp\/news\/17869\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u5b87\u5b99\u521d\u671f\u306b\u89b3\u6e2c\u53f2\u4e0a\u6700\u5c11\u306e\u9178\u7d20\u91cf\u3092\u6301\u3064\u6975\u5c0f\u9280\u6cb3\u3092\u767a\u898b\u2015\u5b87\u5b99\u306e\u5316\u77f3\u5929\u4f53\u306e\u8d77\u6e90\u306b\u8feb\u308b\u2015\uff08\u6771\u4eac\u5927\u5b66\u5b87\u5b99\u7dda\u7814\u7a76\u6240\uff09\u00a0<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b87\u5b99\u8a95\u751f\u304b\u3089\u7d048\u5104\u5e74\u5f8c\u306e\u6642\u4ee3\u306b\u3042\u308b\u6975\u3081\u3066\u6697\u304f\u5c0f\u3055\u306a\u6975\u5c0f\u9280\u6cb3\u300cLAP1-B\u300d\u3092\u3001\u30b8\u30a7\u30a4\u30e0\u30ba\u30fb\u30a6\u30a7\u30c3\u30d6\u5b87\u5b99\u671b\u9060\u93e1\uff08JWST\uff09\u3067\u89b3\u6e2c\u3057\u305f\u7d50\u679c\u3001\u3053\u306e\u9280\u6cb3\u306b\u542b\u307e\u308c\u308b\u9178\u7d20\u306e\u5272\u5408\u304c\u89b3\u6e2c\u53f2\u4e0a\u6700\u5c11\u306e\u5024\u3067\u3042\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u307e\u3057\u305f\u3002\u3055\u3089\u306b\u89e3\u6790\u3057 [&hellip;]<\/p>\n","protected":false},"author":89,"featured_media":5418,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"cybocfi_hide_featured_image":"yes","_locale":"ja","_original_post":"https:\/\/sci.nao.ac.jp\/main\/?p=5417","footnotes":""},"categories":[19],"tags":[],"class_list":["post-5417","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-highlights","ja"],"_links":{"self":[{"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/posts\/5417","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/users\/89"}],"replies":[{"embeddable":true,"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/comments?post=5417"}],"version-history":[{"count":10,"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/posts\/5417\/revisions"}],"predecessor-version":[{"id":5428,"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/posts\/5417\/revisions\/5428"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/media\/5418"}],"wp:attachment":[{"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/media?parent=5417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/categories?post=5417"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sci.nao.ac.jp\/main\/wp-json\/wp\/v2\/tags?post=5417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}