{"id":26,"date":"2013-11-01T10:15:46","date_gmt":"2013-11-01T09:15:46","guid":{"rendered":"http:\/\/localhost\/wordpress\/?p=26"},"modified":"2015-09-15T11:18:59","modified_gmt":"2015-09-15T10:18:59","slug":"sn-2010lp-a-subluminous-type-ia-supernova-from-a-violent-merger","status":"publish","type":"post","link":"https:\/\/markus-kromer.de\/wordpress\/sn-2010lp-a-subluminous-type-ia-supernova-from-a-violent-merger\/","title":{"rendered":"A merger model for SN 2010lp"},"content":{"rendered":"<div id=\"attachment_175\" style=\"width: 282px\" class=\"wp-caption alignright\"><a href=\"http:\/\/markus-kromer.de\/wordpress\/wp-content\/uploads\/2013\/10\/10lp_hydro.png\"><img aria-describedby=\"caption-attachment-175\" loading=\"lazy\" class=\" wp-image-175\" src=\"http:\/\/markus-kromer.de\/wordpress\/wp-content\/uploads\/2013\/10\/10lp_hydro-300x300.png\" alt=\"Time evolution of our merger model (colour-coded is the logarithm of the density). Initially, the two CO WDs (0.9 M\u2299 and 0.76 M\u2299 , respectively) orbit each other with a period of \u223c36 s. The first six panels show the inspiral phase. At t = 72 s, the detonation is ignited (indicated by the crosshairs in the middle right panel). The bottom panels show how the detonation front (black line) propagates.\" width=\"272\" height=\"272\" srcset=\"https:\/\/markus-kromer.de\/wordpress\/wp-content\/uploads\/2013\/10\/10lp_hydro-300x300.png 300w, https:\/\/markus-kromer.de\/wordpress\/wp-content\/uploads\/2013\/10\/10lp_hydro-150x150.png 150w, https:\/\/markus-kromer.de\/wordpress\/wp-content\/uploads\/2013\/10\/10lp_hydro-1024x1024.png 1024w, https:\/\/markus-kromer.de\/wordpress\/wp-content\/uploads\/2013\/10\/10lp_hydro-624x624.png 624w, https:\/\/markus-kromer.de\/wordpress\/wp-content\/uploads\/2013\/10\/10lp_hydro.png 1200w\" sizes=\"(max-width: 272px) 100vw, 272px\" \/><\/a><p id=\"caption-attachment-175\" class=\"wp-caption-text\">Time evolution of our merger model (colour-coded is the logarithm of the density). Initially, the two CO WDs (0.9 M\u2299 and 0.76 M\u2299 , respectively) orbit each other with a period of \u223c36 s. The first six panels show the inspiral phase. At t = 72 s, the detonation is ignited (indicated by the crosshairs in the middle right panel). The bottom panels show how the detonation front (black line) propagates.<\/p><\/div>\n<p>SN 2010lp is a subluminous Type Ia supernova (SN Ia) with slowly-evolving lightcurves. Moreover, it is the only subluminous SN Ia observed so far that shows narrow emission lines of OI in late-time spectra, indicating unburned oxygen close to the centre of the ejecta. Most explosion models for SNe Ia cannot explain the narrow OI emission. In this Letter (<a href=\"http:\/\/dx.doi.org\/10.1088\/2041-8205\/778\/1\/L18\">The Astrophysical Journal Letters, Volume 778, Issue 1, article id. L18, 2013<\/a>), we present hydrodynamic explosion and radiative transfer calculations showing that the violent merger of two carbon-oxygen white dwarfs of 0.9 and 0.76 solar masses, respectively, adequately reproduces the early-time observables of SN 2010lp. Moreover, our model predicts oxygen close to the centre of the explosion ejecta, a pre-requisite for narrow OI emission in nebular spectra as observed in SN 2010lp.<\/p>\n<p>Full text available at\u00a0<a href=\"http:\/\/de.arxiv.org\/abs\/1311.0310\">http:\/\/de.arxiv.org\/abs\/1311.0310<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SN 2010lp is a subluminous Type Ia supernova (SN Ia) with slowly-evolving lightcurves. Moreover, it is the only subluminous SN Ia observed so far that shows narrow emission lines of OI in late-time spectra, indicating unburned oxygen close to the &hellip; <a href=\"https:\/\/markus-kromer.de\/wordpress\/sn-2010lp-a-subluminous-type-ia-supernova-from-a-violent-merger\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/markus-kromer.de\/wordpress\/wp-json\/wp\/v2\/posts\/26"}],"collection":[{"href":"https:\/\/markus-kromer.de\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/markus-kromer.de\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/markus-kromer.de\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/markus-kromer.de\/wordpress\/wp-json\/wp\/v2\/comments?post=26"}],"version-history":[{"count":3,"href":"https:\/\/markus-kromer.de\/wordpress\/wp-json\/wp\/v2\/posts\/26\/revisions"}],"predecessor-version":[{"id":176,"href":"https:\/\/markus-kromer.de\/wordpress\/wp-json\/wp\/v2\/posts\/26\/revisions\/176"}],"wp:attachment":[{"href":"https:\/\/markus-kromer.de\/wordpress\/wp-json\/wp\/v2\/media?parent=26"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/markus-kromer.de\/wordpress\/wp-json\/wp\/v2\/categories?post=26"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/markus-kromer.de\/wordpress\/wp-json\/wp\/v2\/tags?post=26"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}