{"id":26755,"date":"2021-03-08T09:21:42","date_gmt":"2021-03-08T08:21:42","guid":{"rendered":"https:\/\/karmaka.de\/?p=26755"},"modified":"2021-03-08T09:21:44","modified_gmt":"2021-03-08T08:21:44","slug":"optical-constants-of-a-solar-system-organic-analog-and-the-allende-meteorite-in-the-near-and-mid-infrared-1-5-13-%ce%bcm","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=26755","title":{"rendered":"Optical constants of a solar system organic analog and the Allende meteorite in the near and mid-infrared (1.5-13 \u03bcm)<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Jessica A. Arnold, Alycia J. Weinberger, George Cody, Gorden Videen, Olga Mu\u00f1oz<\/p>\n\n\n\n<p>accepted for publication by PSJ<\/p>\n\n\n\n<p><a href=\"https:\/\/arxiv.org\/pdf\/2103.03822\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Measurements of visible and near-infrared reflection (0.38-5 \u03bcm) and mid to far infrared emission (5-200 \u03bcm) from telescope and satellite remote sensing instruments make it possible to investigate the composition of planetary surfaces via electronic transitions and vibrational modes of chemical bonds. Red spectral slopes at visible and near infrared wavelengths and absorption features at 3.3 and 3.4 \u03bcm observed in circumstellar disks, the interstellar medium, and on the surfaces of solar-system bodies are interpreted to be due to the presence of organic material and other carbon compounds. Identifying the origin of these features requires measurements of the optical properties of a variety of relevant analog and planetary materials. Spectroscopic models of dust within circumstellar disks and the interstellar medium as well as planetary regoliths often incorporate just one such laboratory measurement despite the wide variation in absorption and extinction properties of organic and other carbon-bearing materials. Here we present laboratory measurements of transmission spectra in the 1.5-13 \u03bcm region and use these to derive real and imaginary indices of refraction for two samples: 1) an analog to meteoritic insoluble organic matter and 2) a powdered Allende meteorite sample. We also test our refractive index retrieval method on a previously published transmission spectrum of an Mg-rich olivine. We compare optical measurements of the insoluble organic-matter analog to those of other solar-system and extrasolar organic analogs, such as amorphous carbon and tholins, and find that the indices of refraction of the newly characterized material differ significantly from other carbonaceous samples. &#8220;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jessica A. Arnold, Alycia J. Weinberger, George Cody, Gorden Videen, Olga Mu\u00f1oz accepted for publication by PSJ PDF (OPEN ACCESS) &#8220;Measurements of visible and near-infrared reflection (0.38-5 \u03bcm) and mid to far infrared emission (5-200&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[576,73,130,71,1184],"tags":[108,2536,1860,1989,1479,359,5821],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/26755"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=26755"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/26755\/revisions"}],"predecessor-version":[{"id":26756,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/26755\/revisions\/26756"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26755"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26755"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26755"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}