{"id":3662,"date":"2020-09-24T14:18:13","date_gmt":"2020-09-24T14:18:13","guid":{"rendered":"https:\/\/www.editage.com\/insights\/scientists-confirm-presence-of-acetonitrile-in-distant-interstellar-gas-cloud\/"},"modified":"2025-01-15T06:29:43","modified_gmt":"2025-01-15T06:29:43","slug":"scientists-confirm-presence-of-acetonitrile-in-distant-interstellar-gas-cloud","status":"publish","type":"post","link":"https:\/\/www.editage.com\/insights\/scientists-confirm-presence-of-acetonitrile-in-distant-interstellar-gas-cloud","title":{"rendered":"Scientists confirm presence of acetonitrile in distant interstellar gas cloud"},"content":{"rendered":"<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">The origin of life on Earth is a topic that has piqued human curiosity since probably before recorded history began. But how did the organic matter that constitutes lifeforms even arrive at our planet? Though this is still a subject of debate among scholars and practitioners in related fields, one approach to answering this question involves finding and studying complex organic molecules (COMs) in outer space.<\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Many scientists have reported finding all sorts of COMs in molecular clouds\u2014gigantic regions of interstellar space that contain various types of gases. This is generally done using radio telescopes, which measure and record radiofrequency waves to provide a frequency profile of the incoming radiation called <i>spectrum<\/i>. Molecules in space are usually rotating in various directions, and they emit or absorb radio waves at very specific frequencies when their rotational speed changes. Current physics and chemistry models allow us to approximate the composition of what a radio telescope is pointed at, via analysis of the intensity of the incoming radiation at these frequencies.<\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">In a recent study <span class=\"MsoHyperlink\" style=\"color:blue\"><span style=\"text-decoration:underline\"><a href=\"https:\/\/doi.org\/10.1093\/mnras\/staa1754\" style=\"color:blue; text-decoration:underline\">published in <i>Monthly Notices of the Royal Astronomical Society<\/i><\/a><\/span><\/span>, Dr Mitsunori Araki from Tokyo University of Science, along with other scientists from across Japan, tackled a difficult question in the search for interstellar COMs: how can we assert\u00a0 the presence of COMs in the less dense regions of molecular clouds? Because molecules in space are mostly energized by collisions with hydrogen molecules, COMs in the low-density regions of molecular clouds emit less radio waves, making it difficult for us to detect them. However, Dr Araki and his team took a different approach based on a special organic molecule called acetonitrile (CH<sub>3<\/sub>CN). <\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Acetonitrile is an elongated molecule that has two independent ways of rotating: around its long axis, like a spinning top, or as if it were a pencil spinning around your thumb. The latter type of rotation tends to spontaneously slow down due to the emission of radio waves and, in the low-density regions of molecular clouds, it naturally becomes less energetic or \u201ccold.\u201d In contrast, the other type of rotation does not emit radiation and therefore remains active without slowing down. This particular behavior of the acetonitrile molecule was the basis on which Dr Araki and his team managed to detect it. He explains: \u201c<i>In low-density regions of molecular clouds, the proportion of acetonitrile molecules rotating like a spinning top should be higher. Thus, it can be inferred that an extreme state in which a lot of them would be rotating in this way should exist. Our research team was, however, the first to predict its existence, select astronomical bodies that could be observed, and actually begin exploration.<\/i>\u201d<\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Instead of going for radio wave emissions, they focused on radio wave <i>absorption<\/i>. The \u201ccold\u201d state of the low-density region, if populated by acetonitrile molecules, should have a predictable effect on the radiation that originates in celestial bodies like stars and goes through it. In other words, the spectrum of a radiating body that we perceive on Earth as being \u201cbehind\u201d a low-density region would be filtered by acetonitrile molecules spinning like a top in a calculable way, before it reaches our telescope on earth. Therefore, Dr Araki and his team had to carefully select radiating bodies that could be used as an appropriate \u201cbackground light\u201d to see if the shadow of \u201ccold\u201d acetonitrile appeared in the measured spectrum. To this end, they used the 45 m radio telescope of the Nobeyama Radio Observatory, Japan, to explore this effect in a low-density region around the \u201cSagittarius molecular cloud Sgr B2(M),\u201d one of the largest molecular clouds in the vicinity of the center of our galaxy. <\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">After careful analysis of the spectra measured, the scientists concluded that the region analyzed was rich in acetonitrile molecules rotating like a spinning top; the proportion of molecules rotating this way was actually the highest ever recorded. Excited about the results, Dr Araki remarks: \u201c<i>By considering the special behavior of acetonitrile, its amount in<\/i> <i>the low-density region around Sgr B2(M) can be accurately determined. Because acetonitrile is a representative COM in space, knowing its amount and distribution though space can help us probe further into the overall distribution of organic matter<\/i>.\u201d <\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Ultimately, this study may not only give us some clues about where the molecules that conform us came from, but also serve as data for the time when humans manage to venture outside the solar system.\u00a0 <\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><b><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Reference<\/span><\/b><\/span><\/span><\/p>\n<p style=\"margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><b><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Title of original paper<\/span><\/span><\/b><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">: Observations and Analysis of Absorption Lines including <i>J <\/i>= <i>K <\/i>Rotational Levels of CH<sub>3<\/sub>CN: The Envelope of Sagittarius B2(M)<\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><b><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Journal<\/span><\/span><\/b><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">: <i>Monthly Notices of the Royal Astronomical Society, <\/i>Volume 497, Issue 2, September 2020, Pages 1521-1535<\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"tab-stops:130.5pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><b><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">DOI<\/span><\/span><\/b><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">: <span class=\"MsoHyperlink\" style=\"color:blue\"><span style=\"text-decoration:underline\"><a href=\"https:\/\/doi.org\/10.1093\/mnras\/staa1754\" style=\"color:blue; text-decoration:underline\">10.1093\/mnras\/staa1754<\/a><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p class=\"Default\" style=\"margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p class=\"Default\" style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"color:black\"><b>About <\/b><b>Tokyo University of Science<\/b><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Tokyo University of Science (TUS) is a well-known and respected university, and the largest science-specialized private research university in Japan, with four campuses in central Tokyo and its suburbs and in Hokkaido. Established in 1881, the university has continually contributed to Japan&#8217;s development in science through inculcating the love for science in researchers, technicians, and educators. <\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\">\u00a0<\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">With a mission of \u201cCreating science and technology for the harmonious development of nature, human beings, and society&#8221;, TUS has undertaken a wide range of research from basic to applied science. TUS has embraced a multidisciplinary approach to research and undertaken intensive study in some of today&#8217;s most vital fields. TUS is a meritocracy where the best in science is recognized and nurtured. It is the only private university in Japan that has produced a Nobel Prize winner and the only private university in Asia to produce Nobel Prize winners within the natural sciences field. <\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Website: <span class=\"MsoHyperlink\" style=\"color:blue\"><span style=\"text-decoration:underline\"><a href=\"https:\/\/www.tus.ac.jp\/en\/mediarelations\/\" style=\"color:blue; text-decoration:underline\">https:\/\/www.tus.ac.jp\/en\/mediarelations\/<\/a><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"color:black\"><b>About Dr Mitsunori Araki from Tokyo University of Science<\/b><\/span><\/span><\/span><\/p>\n<p class=\"Default\" style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:Calibri,sans-serif\"><span style=\"color:black\">Dr Mitsunori Araki earned a PhD in Chemistry from The Graduate University of Advanced Studies, Japan, in 1999. After being a Research Fellow and an Assistant Professor in various universities in Japan, he joined the Tokyo University of Science in 2009 and, since 2014, he has been a Principal Investigator on astrochemistry research projects. His research interests mainly revolve around complex organic molecules in space and his goal is to find new such molecules and clarify their cosmic origin, both through experiments with synthetized molecules in the lab and via direct observations with radio telescopes.<\/span><\/span><\/span><\/span><\/p>\n<p class=\"Default\" style=\"text-align:justify; margin:0in 0in 0.0001pt\">\u00a0<\/p>\n<p class=\"Default\" style=\"text-align:justify; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><b><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Media contact <\/span><\/b><\/span><\/span><\/p>\n<p style=\"margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Tsutomu Shimizu <\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin-left:.9pt; margin:0in 0in 0.0001pt\"><span style=\"font-size:12pt\"><span style=\"tab-stops:131.15pt\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span style=\"font-size:11.0pt\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Email: <span class=\"MsoHyperlink\" style=\"color:blue\"><span style=\"text-decoration:underline\"><a href=\"mailto:mediaoffice@admin.tus.ac.jp\" style=\"color:blue; text-decoration:underline\">mediaoffice@admin.tus.ac.jp<\/a><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The origin of life on Earth is a topic that has piqued human curiosity since probably before recorded history began. But how did the organic matter that constitutes lifeforms even arrive at our planet? Though this is still a subject of debate among scholars and practitioners in related fields, one approach to answering this question [&hellip;]<\/p>\n","protected":false},"author":1152,"featured_media":33313,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[2435],"tags":[2482],"new_categories":[],"new_tags":[],"series":[],"class_list":["post-3662","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trending-research","tag-science-update"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Scientists confirm presence of acetonitrile in distant interstellar gas cloud | Editage Insights<\/title>\n<meta name=\"description\" content=\"Scientists at Tokyo University of Science confirm presence of acetonitrile in distant 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