{"id":7442,"date":"2016-08-25T12:03:59","date_gmt":"2016-08-25T11:03:59","guid":{"rendered":"http:\/\/gaia.ub.edu\/?p=7442&#038;lang=ca"},"modified":"2016-10-25T12:05:10","modified_gmt":"2016-10-25T11:05:10","slug":"el-telescopi-joan-oro-participa-en-la-deteccio-de-gaia16aye-un-objecte-estrany-a-cygnus","status":"publish","type":"post","link":"https:\/\/gaia.ub.edu\/?p=7442&lang=ca","title":{"rendered":"El telescopi Joan Or\u00f3 participa en la detecci\u00f3 de Gaia16aye, un objecte estrany a Cygnus"},"content":{"rendered":"<header id=\"main-content-header\" class=\"clearfix\">\n<h1 id=\"page-title\">El telescopi Joan Or\u00f3 participa en la detecci\u00f3 de Gaia16aye, un objecte estrany a Cygnus<\/h1>\n<\/header>\n<div id=\"content\">\n<div id=\"block-system-main\" class=\"block block-system no-title odd first last block-count-2 block-region-content block-main\">\n<article id=\"node-1374\" class=\"node node-noticies node-promoted article odd node-lang-ca node-full ia-l clearfix\">\n<div class=\"node-content\">\n<div class=\"field field-name-body field-type-text-with-summary field-label-hidden view-mode-full\">\n<div class=\"field-items\">\n<div class=\"field-item even\">\n<p><img decoding=\"async\" src=\"http:\/\/www.am.ub.edu\/sites\/default\/files\/joanoro2016.jpg\" alt=\"\" \/>El passat 5 d\u2019agost es va originar una alerta cient\u00edfica de Gaia quan l\u2019objecte Gaia16aye va ser detectat 1.2 magnituds m\u00e9s brillant que durant les observacions anteriors de Gaia (l\u2019\u00faltima el 20 de juny).<\/p>\n<p>Les observacions posteriors des de la Terra van obtenir una font vermella que augmentava gradualment la seva brillantor a un ritme de 0.1 magnituds per dia sense canviar el seu color ni mostrar una variabilitat r\u00e0pida. Les observacions obtingudes el 13 d\u2019agost van mostrar un ritme d\u2019increment de la lluentor de 0.6 magnituds per dia.<\/p>\n<p>Les mesures fotom\u00e8triques des de Terra s\u2019estan duent a terme pel <strong>telescopi Joan Oro de l&#8217;Observatori Astron\u00f2mic del Montsec de 0.8m,<\/strong> el telescopi de la \u00a0SAI Southern Station a Crimea de 0.6m, el telescopi\u00a0 pt5m de l\u2019observatori de Roque de los Muchachos a La Palma, l\u2019 Akdeniz Univ. UBT60 de 0.6m al TUBITAK National Observatory, Antalya, i\u00a0 el telescopi de Serra La Nave de 0.8m.<\/p>\n<p>La informaci\u00f3 ampliada sobre aquest fenomen es pot trobar a l\u2019article publicat a The Astronomer\u2019s Telegram (<a href=\"http:\/\/www.astronomerstelegram.org\/?read=9376\">http:\/\/www.astronomerstelegram.org\/?read=9376<\/a>).<\/p>\n<p>L\u2019astr\u00f2nom <strong>Josep Manel Carrasco<\/strong>, membre de l\u2019ICCUB (IEEC-UB) i coautor d\u2019aquest article ha avan\u00e7at que despr\u00e9s de la seva publicaci\u00f3 s\u2019han fet m\u00e9s observacions que semblen indicar que es tracta d&#8217;un fenomen de microlent causat per una lent bin\u00e0ria, que provoca la corba de llum asim\u00e8trica. Probablement el primer pic de la corba no el va detectar Gaia i l&#8217;alerta es va activar quan el primer pic ja estava disminuint. La corba de llum m\u00e9s actualitzada de l\u2019objecte es pot trobar a <a href=\"http:\/\/gsaweb.ast.cam.ac.uk\/alerts\/alert\/Gaia16aye\/followup\">http:\/\/gsaweb.ast.cam.ac.uk\/alerts\/alert\/Gaia16aye\/followup<\/a>.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Alertes de Gaia<\/strong><\/p>\n<p>El sat\u00e8l\u00b7lit Gaia \u00e9s una missi\u00f3 de l\u2019Ag\u00e8ncia Espacial Europea per cartografiar la nostra Gal\u00e0xia. Per tal de fer aix\u00f2, Gaia ha de revisar completament el cel una vegada i una altra durant cinc anys. Per\u00f2 mentre Gaia mira l\u2019espai per fixar les posicions de les estrelles pot detectar milers d\u2019objectes transitoris.<\/p>\n<p>Un objecte transitori \u00e9s quelcom en el cel que apareix, desapareix\u00a0 o canvia. Alguns d\u2019aquests objecte transitoris poden ser estrelles explotant com supernoves, o forats negres engolint estrelles. El projecte alertes de Gaia treballa per a trobar aquests fen\u00f2mens en les dades de Gaia, i anunciar-los al m\u00f3n a temps real.<\/p>\n<p>Un cop es detecta un objecte transitori s\u2019activa una alerta i una xarxa d\u2019observatoris terrestres es posen en marxa per fer observacions i donar m\u00e9s informaci\u00f3 sobre el fenomen.<\/p>\n<p>El projecte d\u2019alertes de Gaia pret\u00e9n que els astr\u00f2noms amateurs i els estudiants tamb\u00e9 contribueixin a la investigaci\u00f3 de les alertes fent observacions . La informaci\u00f3 sobre les condicions de participaci\u00f3 es pot trobar a: <a href=\"https:\/\/gaia.ac.uk\/alerts\">https:\/\/gaia.ac.uk\/alerts<\/a><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Telescopi Joan Or\u00f3<\/strong><\/p>\n<p>L\u2019Observatori Astron\u00f2mic del Montsec amb el Telescopi Joan Or\u00f3 \u00e9s el tercer telescopi amb m\u00e9s contribucions al projecte d\u2019alertes fotom\u00e8triques de Gaia.<\/p>\n<p>Un bon seguiment dels fen\u00f2mens transitoris requereix que el telescopi sigui capa\u00e7 de canviar immediatament la seva planificaci\u00f3 per tal d\u2019observar-los quan sorgeixen i el Telescopi Joan Or\u00f3 t\u00e9 aquesta capacitat.<\/p>\n<p>M\u00e9s informaci\u00f3 sobre l\u2019Observatori del Montsec\u00a0 a <a href=\"http:\/\/www.oadm.cat\/\">www.oadm.cat<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<section class=\"field field-name-field-data-noticies field-type-datetime field-label-above view-mode-full\">\n<h2 class=\"field-label\">Data:<\/h2>\n<div class=\"field-items\">\n<div class=\"field-item even\"><span class=\"date-display-single\">Dimecres, 24 Agost, 2016<\/span><\/div>\n<\/div>\n<\/section>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>El telescopi Joan Or\u00f3 participa en la detecci\u00f3 de Gaia16aye, un objecte estrany a Cygnus El passat 5 d\u2019agost es va originar una alerta cient\u00edfica de Gaia quan l\u2019objecte Gaia16aye va ser detectat 1.2 magnituds m\u00e9s brillant que durant les observacions anteriors de Gaia (l\u2019\u00faltima el 20 de juny). Les observacions posteriors des de la [&hellip;]<\/p>\n","protected":false},"author":16,"featured_media":7439,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[109,105],"tags":[],"class_list":["post-7442","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-ca","category-press-tv-ca"],"_links":{"self":[{"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F7442&lang=ca","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fposts&lang=ca"}],"about":[{"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Ftypes%2Fpost&lang=ca"}],"author":[{"embeddable":true,"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fusers%2F16&lang=ca"}],"replies":[{"embeddable":true,"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&lang=ca&post=7442"}],"version-history":[{"count":1,"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F7442%2Frevisions&lang=ca"}],"predecessor-version":[{"id":7443,"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fposts%2F7442%2Frevisions%2F7443&lang=ca"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia%2F7439&lang=ca"}],"wp:attachment":[{"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&lang=ca&parent=7442"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&lang=ca&post=7442"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaia.ub.edu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&lang=ca&post=7442"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}