{"id":250,"date":"2021-03-18T09:31:36","date_gmt":"2021-03-18T13:31:36","guid":{"rendered":"https:\/\/sites.bu.edu\/buwd\/?p=250"},"modified":"2021-04-13T22:04:30","modified_gmt":"2021-04-14T02:04:30","slug":"untangling-mysterious-emission-in-some-cool-white-dwarfs","status":"publish","type":"post","link":"https:\/\/sites.bu.edu\/buwd\/2021\/03\/18\/untangling-mysterious-emission-in-some-cool-white-dwarfs\/","title":{"rendered":"Untangling mysterious emission in some cool white dwarfs"},"content":{"rendered":"<p>In March 2021 work led by University College London graduate student Nik Walters was <a href=\"https:\/\/arxiv.org\/abs\/2103.01993\">accepted to MNRAS<\/a> analyzing GD 356, the prototype of a new class of just four white dwarfs that exhibit Balmer emission lines despite being apparently isolated stars. Here we provide strong evidence that this emission is <strong>not<\/strong> the result of a current generated by a close-in rocky planet; instead, this process may reveal a new phase of white dwarf evolution. This work includes multiple BUWD group researchers, as well as data collected remotely during the COVID-19 pandemic from BU&#8217;s <a href=\"http:\/\/www.bu.edu\/pto\/\">1.8-meter Perkins Telescope Observatory<\/a>, which helped rule out large spin-period changes in this rapidly rotating white dwarf.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In March 2021 work led by University College London graduate student Nik Walters was accepted to MNRAS analyzing GD 356, the prototype of a new class of just four white dwarfs that exhibit Balmer emission lines despite being apparently isolated stars. Here we provide strong evidence that this emission is not the result of a [&hellip;]<\/p>\n","protected":false},"author":15801,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/sites.bu.edu\/buwd\/wp-json\/wp\/v2\/posts\/250"}],"collection":[{"href":"https:\/\/sites.bu.edu\/buwd\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.bu.edu\/buwd\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.bu.edu\/buwd\/wp-json\/wp\/v2\/users\/15801"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.bu.edu\/buwd\/wp-json\/wp\/v2\/comments?post=250"}],"version-history":[{"count":3,"href":"https:\/\/sites.bu.edu\/buwd\/wp-json\/wp\/v2\/posts\/250\/revisions"}],"predecessor-version":[{"id":254,"href":"https:\/\/sites.bu.edu\/buwd\/wp-json\/wp\/v2\/posts\/250\/revisions\/254"}],"wp:attachment":[{"href":"https:\/\/sites.bu.edu\/buwd\/wp-json\/wp\/v2\/media?parent=250"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.bu.edu\/buwd\/wp-json\/wp\/v2\/categories?post=250"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.bu.edu\/buwd\/wp-json\/wp\/v2\/tags?post=250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}