{"id":11536,"date":"2020-02-27T13:38:10","date_gmt":"2020-02-27T13:38:10","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=11536"},"modified":"2020-02-27T13:38:10","modified_gmt":"2020-02-27T13:38:10","slug":"sun-long-lost-sibling-star-formation","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/astronomy\/sun-long-lost-sibling-star-formation\/","title":{"rendered":"Ng\u01b0\u1eddi anh em th\u1ea5t l\u1ea1c c\u1ee7a M\u1eb7t tr\u1eddi: Nghi\u00ean c\u1ee9u v\u1ec1 s\u1ef1 h\u00ecnh th\u00e0nh sao m\u1edf ra b\u00ed \u1ea9n"},"content":{"rendered":"

Ng\u01b0\u1eddi anh em th\u1ea5t l\u1ea1c t\u1eeb l\u00e2u c\u1ee7a M\u1eb7t tr\u1eddi: Nghi\u00ean c\u1ee9u m\u1edbi v\u1ec1 s\u1ef1 h\u00ecnh th\u00e0nh sao<\/h2>\n\n

Sao \u0111\u00f4i: M\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng ph\u1ed5 bi\u1ebfn<\/h2>\n\n

Trong kh\u00f4ng gian r\u1ed9ng l\u1edbn c\u1ee7a thi\u00ean h\u00e0 ch\u00fang ta, Ng\u00e2n H\u00e0, c\u00e1c sao \u0111\u00f4i l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng ph\u1ed5 bi\u1ebfn. Nh\u1eefng c\u1eb7p \u0111\u00f4i tr\u00ean b\u1ea7u tr\u1eddi n\u00e0y, bao g\u1ed3m hai ng\u00f4i sao li\u00ean k\u1ebft v\u1edbi nhau b\u1eb1ng l\u1ef1c h\u1ea5p d\u1eabn, chi\u1ebfm m\u1ed9t t\u1ef7 l\u1ec7 \u0111\u00e1ng k\u1ec3 trong qu\u1ea7n th\u1ec3 c\u00e1c ng\u00f4i sao.<\/p>\n\n

B\u00ed \u1ea9n v\u1ec1 ng\u01b0\u1eddi anh em song sinh c\u1ee7a M\u1eb7t tr\u1eddi<\/h2>\n\n

Trong nhi\u1ec1u th\u1eadp k\u1ef7, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 suy ng\u1eabm v\u1ec1 kh\u1ea3 n\u0103ng r\u1eb1ng ng\u00f4i sao g\u1ea7n nh\u1ea5t c\u1ee7a ch\u00fang ta, M\u1eb7t tr\u1eddi, t\u1eebng c\u00f3 m\u1ed9t ng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh gi\u1ed1ng nh\u01b0 anh em song sinh. Ng\u01b0\u1eddi anh em b\u00ed \u1ea9n n\u00e0y, \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 “Nemesis”, v\u1eabn c\u00f2n l\u00e0 \u0111i\u1ec1u kh\u00f3 n\u1eafm b\u1eaft, khi\u1ebfn c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc c\u00f3 nhi\u1ec1u c\u00e2u h\u1ecfi ch\u01b0a \u0111\u01b0\u1ee3c gi\u1ea3i \u0111\u00e1p v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a h\u1ec7 m\u1eb7t tr\u1eddi c\u1ee7a ch\u00fang ta.<\/p>\n\n

Nh\u1eefng hi\u1ec3u bi\u1ebft m\u1edbi t\u1eeb c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 s\u1ef1 h\u00ecnh th\u00e0nh sao<\/h2>\n\n

Nghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi c\u00e1c nh\u00e0 v\u1eadt l\u00fd thi\u00ean v\u0103n Sarah Sadavoy v\u00e0 Steven Stahler \u0111\u00e3 l\u00e0m s\u00e1ng t\u1ecf qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh v\u00e0 ti\u1ebfn h\u00f3a c\u1ee7a c\u00e1c ng\u00f4i sao. Nh\u1eefng quan s\u00e1t t\u1ec9 m\u1ec9 v\u00e0 m\u00f4 h\u00ecnh th\u1ed1ng k\u00ea c\u1ee7a h\u1ecd \u0111\u00e3 cung c\u1ea5p b\u1eb1ng ch\u1ee9ng thuy\u1ebft ph\u1ee5c r\u1eb1ng ph\u1ea7n l\u1edbn c\u00e1c ng\u00f4i sao, bao g\u1ed3m c\u1ea3 M\u1eb7t tr\u1eddi c\u1ee7a ch\u00fang ta, c\u00f3 kh\u1ea3 n\u0103ng xu\u1ea5t hi\u1ec7n t\u1eeb c\u00e1c h\u1ec7 sao \u0111\u00f4i.<\/p>\n\n

S\u1ef1 h\u00ecnh th\u00e0nh sao: C\u00e2u chuy\u1ec7n v\u1ec1 c\u00e1c c\u1eb7p \u0111\u00f4i<\/h2>\n\n

Nghi\u00ean c\u1ee9u c\u1ee7a nh\u00f3m, \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed uy t\u00edn Monthly Notices of the Royal Astronomy Society, \u0111\u00e3 ph\u00e2n t\u00edch s\u1ef1 ph\u00e2n b\u1ed1 v\u00e0 \u0111\u1ed9 tu\u1ed5i c\u1ee7a c\u00e1c ng\u00f4i sao trong ch\u00f2m sao Anh Ti\u00ean, m\u1ed9t khu v\u1ef1c \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi ho\u1ea1t \u0111\u1ed9ng h\u00ecnh th\u00e0nh sao m\u1ea1nh m\u1ebd. Nh\u1eefng ph\u00e1t hi\u1ec7n c\u1ee7a h\u1ecd \u0111\u00e3 ti\u1ebft l\u1ed9 m\u1ed9t m\u00f4 h\u00ecnh n\u1ed5i b\u1eadt: nh\u1eefng ng\u00f4i sao c\u00e1ch nhau r\u1ea5t xa, v\u01b0\u1ee3t qu\u00e1 46.500 tri\u1ec7u d\u1eb7m, cho th\u1ea5y \u0111\u1ed9 tu\u1ed5i tr\u1ebb h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi nh\u1eefng ng\u00f4i sao n\u1eb1m \u1edf g\u1ea7n.<\/p>\n\n

Quan s\u00e1t n\u00e0y cho th\u1ea5y r\u1eb1ng c\u00e1c ng\u00f4i sao ban \u0111\u1ea7u h\u00ecnh th\u00e0nh theo t\u1eebng c\u1eb7p. Theo th\u1eddi gian, nh\u1eefng h\u1ec7 sao \u0111\u00f4i n\u00e0y c\u00f3 th\u1ec3 tr\u1ea3i qua nhi\u1ec1u con \u0111\u01b0\u1eddng ti\u1ebfn h\u00f3a kh\u00e1c nhau. M\u1ed9t s\u1ed1 c\u1eb7p \u0111\u00f4i v\u1eabn li\u00ean k\u1ebft v\u1edbi nhau b\u1eb1ng l\u1ef1c h\u1ea5p d\u1eabn, t\u1ea1o th\u00e0nh c\u00e1c h\u1ec7 th\u1ed1ng nh\u1ecf g\u1ecdn, trong khi nh\u1eefng c\u1eb7p \u0111\u00f4i kh\u00e1c tr\u00f4i d\u1ea1t ra xa, tr\u1edf th\u00e0nh nh\u1eefng ng\u00f4i sao \u0111\u01a1n \u0111\u1ed9c.<\/p>\n\n

\u00dd ngh\u0129a \u0111\u1ed1i v\u1edbi M\u1eb7t tr\u1eddi<\/h2>\n\n

Nh\u1eefng h\u1ec7 qu\u1ea3 c\u1ee7a nghi\u00ean c\u1ee9u n\u00e0y r\u1ea5t s\u00e2u s\u1eafc \u0111\u1ed1i v\u1edbi vi\u1ec7c hi\u1ec3u v\u1ec1 l\u1ecbch s\u1eed h\u1ec7 m\u1eb7t tr\u1eddi c\u1ee7a ch\u00fang ta. Nh\u1eefng ph\u00e1t hi\u1ec7n c\u1ee7a Sadavoy v\u00e0 Stahler \u1ee7ng h\u1ed9 m\u1ea1nh m\u1ebd gi\u1ea3 thuy\u1ebft cho r\u1eb1ng M\u1eb7t tr\u1eddi \u0111\u00e3 t\u1eebng c\u00f3 m\u1ed9t ng\u00f4i sao anh em, Nemesis. Ng\u01b0\u1eddi anh em \u0111\u00e3 m\u1ea5t t\u1eeb l\u00e2u n\u00e0y c\u00f3 th\u1ec3 \u0111\u00e3 t\u00e1ch kh\u1ecfi M\u1eb7t tr\u1eddi h\u00e0ng tri\u1ec7u n\u0103m tr\u01b0\u1edbc, ti\u1ebfn v\u00e0o v\u00f9ng r\u1ed9ng l\u1edbn c\u1ee7a Ng\u00e2n H\u00e0.<\/p>\n\n

Cu\u1ed9c t\u00ecm ki\u1ebfm Nemesis<\/h2>\n\n

B\u1ea5t ch\u1ea5p nh\u1eefng b\u1eb1ng ch\u1ee9ng h\u1ea5p d\u1eabn v\u1ec1 s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a Nemesis, tung t\u00edch hi\u1ec7n t\u1ea1i c\u1ee7a n\u00f3 v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c bi\u1ebft. C\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc v\u1eabn \u0111ang t\u00ecm ki\u1ebfm ng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh kh\u00f3 n\u1eafm b\u1eaft n\u00e0y, v\u1edbi hy v\u1ecdng l\u00e0m s\u00e1ng t\u1ecf ch\u01b0\u01a1ng cu\u1ed1i c\u00f9ng trong c\u00e2u chuy\u1ec7n gia \u0111\u00ecnh tr\u00ean b\u1ea7u tr\u1eddi c\u1ee7a M\u1eb7t tr\u1eddi.<\/p>\n\n

S\u1ef1 h\u00ecnh th\u00e0nh sao: C\u1eeda s\u1ed5 nh\u00ecn v\u00e0o qu\u00e1 kh\u1ee9 c\u1ee7a v\u0169 tr\u1ee5<\/h2>\n\n

Ngo\u00e0i nh\u1eefng \u00fd ngh\u0129a c\u1ee5 th\u1ec3 \u0111\u1ed1i v\u1edbi M\u1eb7t tr\u1eddi, nghi\u00ean c\u1ee9u v\u1ec1 s\u1ef1 h\u00ecnh th\u00e0nh sao \u0111\u00f4i c\u00f2n c\u00f3 \u00fd ngh\u0129a r\u1ed9ng l\u1edbn h\u01a1n \u0111\u1ed1i v\u1edbi v\u1eadt l\u00fd thi\u00ean v\u0103n. B\u1eb1ng c\u00e1ch nghi\u00ean c\u1ee9u c\u00e1c qu\u00e1 tr\u00ecnh chi ph\u1ed1i s\u1ef1 h\u00ecnh th\u00e0nh sao, c\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c nh\u1eefng hi\u1ec3u bi\u1ebft c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 ngu\u1ed3n g\u1ed1c v\u00e0 s\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a v\u0169 tr\u1ee5 c\u1ee7a ch\u00fang ta.<\/p>\n\n

Sadavoy nh\u1ea5n m\u1ea1nh t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c hi\u1ec3u s\u1ef1 h\u00ecnh th\u00e0nh sao \u0111\u1ec3 l\u00e0m s\u00e1ng t\u1ecf l\u1ecbch s\u1eed c\u1ee7a v\u0169 tr\u1ee5. B\u00e0 gi\u1ea3i th\u00edch: “Nghi\u00ean c\u1ee9u n\u00e0y s\u1ebd \u0111\u1ecbnh h\u00ecnh l\u1ea1i nh\u1eadn th\u1ee9c c\u1ee7a ch\u00fang ta v\u1ec1 c\u00e1c l\u00f5i sao \u0111\u1eb7c v\u00e0 c\u00e1c ng\u00f4i sao b\u00ean trong ch\u00fang”.<\/p>\n\n

K\u1ebft lu\u1eadn<\/h2>\n\n

Kh\u00e1m ph\u00e1 r\u1eb1ng c\u00e1c ng\u00f4i sao c\u00f3 kh\u1ea3 n\u0103ng h\u00ecnh th\u00e0nh theo t\u1eebng c\u1eb7p c\u00f3 \u00fd ngh\u0129a s\u00e2u s\u1eafc \u0111\u1ed1i v\u1edbi s\u1ef1 hi\u1ec3u bi\u1ebft c\u1ee7a ch\u00fang ta v\u1ec1 s\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a c\u00e1c ng\u00f4i sao v\u00e0 l\u1ecbch s\u1eed c\u1ee7a v\u0169 tr\u1ee5. Trong khi cu\u1ed9c t\u00ecm ki\u1ebfm Nemesis v\u1eabn ti\u1ebfp t\u1ee5c, nghi\u00ean c\u1ee9u \u0111ang di\u1ec5n ra v\u1ec1 s\u1ef1 h\u00ecnh th\u00e0nh sao h\u1ee9a h\u1eb9n s\u1ebd h\u00e9 l\u1ed9 th\u00eam nhi\u1ec1u b\u00ed m\u1eadt v\u1ec1 khu ph\u1ed1 tr\u00ean b\u1ea7u tr\u1eddi c\u1ee7a ch\u00fang ta v\u00e0 v\u00f9ng kh\u00f4ng gian bao la b\u00ean ngo\u00e0i.<\/p>","protected":false},"excerpt":{"rendered":"

Ng\u01b0\u1eddi anh em th\u1ea5t l\u1ea1c t\u1eeb l\u00e2u c\u1ee7a M\u1eb7t tr\u1eddi: Nghi\u00ean c\u1ee9u m\u1edbi v\u1ec1 s\u1ef1 h\u00ecnh th\u00e0nh sao Sao \u0111\u00f4i: M\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng ph\u1ed5 bi\u1ebfn Trong kh\u00f4ng gian r\u1ed9ng l\u1edbn…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[437],"tags":[15606,1173,15607,15608,436,697],"class_list":["post-11536","post","type-post","status-publish","format-standard","hentry","category-astronomy","tag-binary-stars","tag-solar-system","tag-nemesis","tag-star-formation","tag-astrophysics","tag-cosmology"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/11536","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=11536"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/11536\/revisions"}],"predecessor-version":[{"id":11537,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/11536\/revisions\/11537"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=11536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=11536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=11536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}