{"id":1041,"date":"2019-03-27T11:11:50","date_gmt":"2019-03-27T10:11:50","guid":{"rendered":"https:\/\/pepsi.aip.de\/?p=1041"},"modified":"2019-05-21T08:54:27","modified_gmt":"2019-05-21T07:54:27","slug":"first-zdi-with-pepsi","status":"publish","type":"post","link":"https:\/\/pepsi.aip.de\/?p=1041","title":{"rendered":"First ZDI with PEPSI"},"content":{"rendered":"\r\n<p>We present a temperature and a magnetic-field surface map of the K2 subgiant of the active binary II Peg. Employed are high resolution Stokes IV spectra obtained with the new Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT). Our main result is that the temperature features on II Peg closely correlate with its magnetic field topology. We find a warm spot (350K warmer with respect to the effective temperature) of positive polarity and radial field density of 1.1 kG coexisting with a cool spot (780K cooler) of negative polarity of 2 kG.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image\">\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1043 size-full\" src=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2019\/03\/F2a.png\" alt=\"\" width=\"10625\" height=\"2600\" srcset=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2019\/03\/F2a.png 10625w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2019\/03\/F2a-300x73.png 300w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2019\/03\/F2a-768x188.png 768w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2019\/03\/F2a-1024x251.png 1024w\" sizes=\"auto, (max-width: 10625px) 100vw, 10625px\" \/><\/p>\r\n<figcaption>Temperature map from four different viewing angles.<\/figcaption>\r\n<\/figure>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image\">\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1044 size-full\" src=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2019\/03\/F2b.png\" alt=\"\" width=\"10625\" height=\"2600\" srcset=\"https:\/\/pepsi.aip.de\/wp-content\/uploads\/2019\/03\/F2b.png 10625w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2019\/03\/F2b-300x73.png 300w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2019\/03\/F2b-768x188.png 768w, https:\/\/pepsi.aip.de\/wp-content\/uploads\/2019\/03\/F2b-1024x251.png 1024w\" sizes=\"auto, (max-width: 10625px) 100vw, 10625px\" \/><\/p>\r\n<figcaption>Magnetic field map from four different viewing angles.<\/figcaption>\r\n<\/figure>\r\n\r\n\r\n\r\n<p>Read more: Strassmeier, Carroll &amp; Ilyin <a href=\"https:\/\/ui.adsabs.harvard.edu\/abs\/2019A%26A...625A..27S\">2019 A&amp;A, 625, 27\u00a0<\/a><\/p>\r\n\r\n\r\n\r\n<p><a href=\"https:\/\/www.aip.de\/en\/news\/science\/stellar-cartography\">AIP press release<\/a><br \/><a href=\"http:\/\/www.lbto.org\/pepsi-pol-2019.html\">LBT press release<\/a><\/p>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>We present a temperature and a magnetic-field surface map of the K2 subgiant of the active binary II Peg. Employed are high resolution Stokes IV spectra obtained with the new Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT). Our main result is that the temperature features on II Peg closely &hellip; <a href=\"https:\/\/pepsi.aip.de\/?p=1041\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">First ZDI with PEPSI<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-1041","post","type-post","status-publish","format-standard","hentry","category-publications"],"_links":{"self":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/posts\/1041","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1041"}],"version-history":[{"count":11,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/posts\/1041\/revisions"}],"predecessor-version":[{"id":1072,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=\/wp\/v2\/posts\/1041\/revisions\/1072"}],"wp:attachment":[{"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1041"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1041"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pepsi.aip.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1041"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}