``TNOs are Cool'': A survey of the trans-Neptunian region. I. Results from the Herschel science demonstration phase (SDP)

<!DOCTYPE html>     <html class="no-js" lang="en">  <head> <title>``TNOs are Cool'': A survey of the trans-Neptunian region. I. Results from the Herschel science demonstration phase (SDP) - NASA/ADS</title>  <link rel="apple-touch-icon" sizes="180x180" href="//styles/favicon/apple-touch-icon.png" /> <link rel="icon" type="image/png" sizes="32x32" href="//styles/favicon/favicon-32x32.png" /> <link rel="icon" type="image/png" sizes="16x16" href="//styles/favicon/favicon-16x16.png" /> <link rel="manifest" href="//styles/favicon/site.webmanifest" /> <link rel="mask-icon" href="//styles/favicon/safari-pinned-tab.svg" color="#5bbad5" /> <meta name="apple-mobile-web-app-title" content="NASA ADS" /> <meta name="application-name" content="NASA ADS" /> <meta name="msapplication-TileColor" content="#ffc40d" /> <meta name="theme-color" content="#ffffff" />  <link rel="stylesheet" href="/styles/css/styles.css"> <meta name="robots" content="noarchive"> <link rel="canonical" href="http://ui.adsabs.harvard.edu/abs/2010A&A...518L.146M/abstract"/> <meta name="description" content="The goal of the Herschel open time key programme “TNOs are Cool!” is to derive the physical and thermal properties for a large sample of Centaurs and trans-Neptunian objects (TNOs), including resonant, classical, detached and scattered disk objects. We present results for seven targets either observed in PACS point-source, or in mini scan-map mode. Spitzer-MIPS observations were included for three objects. The sizes of these targets range from 100 km to almost 1000 km, five have low geometric albedos below 10%, (145480) 2005 TB<SUB>190</SUB> has a higher albedo above 15%. Classical thermal models driven by an intermediate beaming factor of η = 1.2 or η-values adjusted to the observed colour temperature fit the multi-band observations well in most cases. More sophisticated thermophysical models give very similar diameter and albedo values for thermal inertias in the range 0-25 J m<SUP>-2</SUP> s<SUP>-0.5</SUP> K<SUP>-1</SUP>, consistent with very low heat conductivities at temperatures far away from the Sun. The early experience with observing and model strategies will allow us to derive physical and thermal properties for our complete Herschel TNO sample of 140 targets as a benchmark for understanding the solar system debris disk, and extra-solar ones as well. <P />Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.">  <meta property="og:type" content="article"> <meta property="og:title" content="``TNOs are Cool'': A survey of the trans-Neptunian region. I. Results from the Herschel science demonstration phase (SDP)"> <meta property="og:site_name" content="NASA/ADS"> <meta property="og:description" content="The goal of the Herschel open time key programme “TNOs are Cool!” is to derive the physical and thermal properties for a large sample of Centaurs and trans-Neptunian objects (TNOs), including resonant, classical, detached and scattered disk objects. We present results for seven targets either observed in PACS point-source, or in mini scan-map mode. Spitzer-MIPS observations were included for three objects. The sizes of these targets range from 100 km to almost 1000 km, five have low geometric albedos below 10%, (145480) 2005 TB<SUB>190</SUB> has a higher albedo above 15%. Classical thermal models driven by an intermediate beaming factor of η = 1.2 or η-values adjusted to the observed colour temperature fit the multi-band observations well in most cases. More sophisticated thermophysical models give very similar diameter and albedo values for thermal inertias in the range 0-25 J m<SUP>-2</SUP> s<SUP>-0.5</SUP> K<SUP>-1</SUP>, consistent with very low heat conductivities at temperatures far away from the Sun. The early experience with observing and model strategies will allow us to derive physical and thermal properties for our complete Herschel TNO sample of 140 targets as a benchmark for understanding the solar system debris disk, and extra-solar ones as well. <P />Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA."> <meta property="og:url" content="https://ui.adsabs.harvard.edu/abs/2010A&A...518L.146M/abstract"> <meta property="og:image" content="https://ui.adsabs.harvard.edu/styles/img/transparent_logo.svg"> <meta property="article:published_time" content="07/2010"> <meta property="article:author" content="Müller, T. 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I. Results from the Herschel science demonstration phase (SDP) <a href=""></a> </h2> <div id="authors-and-aff" class="s-authors-and-aff"> <ul class="list-inline"> <li class="author"><a href="/search/?q=author%3A%22M%C3%BCller%2C+T.+G.%22">Müller, T. G.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Lellouch%2C+E.%22">Lellouch, E.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Stansberry%2C+J.%22">Stansberry, J.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Kiss%2C+C.%22">Kiss, C.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Santos-Sanz%2C+P.%22">Santos-Sanz, P.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Vilenius%2C+E.%22">Vilenius, E.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Protopapa%2C+S.%22">Protopapa, S.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Moreno%2C+R.%22">Moreno, R.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Mueller%2C+M.%22">Mueller, M.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Delsanti%2C+A.%22">Delsanti, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Duffard%2C+R.%22">Duffard, R.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Fornasier%2C+S.%22">Fornasier, S.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Groussin%2C+O.%22">Groussin, O.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Harris%2C+A.+W.%22">Harris, A. W.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Henry%2C+F.%22">Henry, F.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Horner%2C+J.%22">Horner, J.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Lacerda%2C+P.%22">Lacerda, P.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Lim%2C+T.%22">Lim, T.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Mommert%2C+M.%22">Mommert, M.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Ortiz%2C+J.+L.%22">Ortiz, J. L.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Rengel%2C+M.%22">Rengel, M.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Thirouin%2C+A.%22">Thirouin, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Trilling%2C+D.%22">Trilling, D.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Barucci%2C+A.%22">Barucci, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Crovisier%2C+J.%22">Crovisier, J.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Doressoundiram%2C+A.%22">Doressoundiram, A.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Dotto%2C+E.%22">Dotto, E.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Guti%C3%A9rrez%2C+P.+J.%22">Gutiérrez, P. J.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Hainaut%2C+O.+R.%22">Hainaut, O. R.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Hartogh%2C+P.%22">Hartogh, P.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Hestroffer%2C+D.%22">Hestroffer, D.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Kidger%2C+M.%22">Kidger, M.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Lara%2C+L.%22">Lara, L.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Swinyard%2C+B.%22">Swinyard, B.</a> </li>; <li class="author"><a href="/search/?q=author%3A%22Thomas%2C+N.%22">Thomas, N.</a> </li> </ul> </div> <div class="s-abstract-text"> <h4 class="sr-only">Abstract</h4> <p> The goal of the Herschel open time key programme “TNOs are Cool!” is to derive the physical and thermal properties for a large sample of Centaurs and trans-Neptunian objects (TNOs), including resonant, classical, detached and scattered disk objects. We present results for seven targets either observed in PACS point-source, or in mini scan-map mode. Spitzer-MIPS observations were included for three objects. The sizes of these targets range from 100 km to almost 1000 km, five have low geometric albedos below 10%, (145480) 2005 TB<SUB>190</SUB> has a higher albedo above 15%. Classical thermal models driven by an intermediate beaming factor of η = 1.2 or η-values adjusted to the observed colour temperature fit the multi-band observations well in most cases. More sophisticated thermophysical models give very similar diameter and albedo values for thermal inertias in the range 0-25 J m<SUP>-2</SUP> s<SUP>-0.5</SUP> K<SUP>-1</SUP>, consistent with very low heat conductivities at temperatures far away from the Sun. The early experience with observing and model strategies will allow us to derive physical and thermal properties for our complete Herschel TNO sample of 140 targets as a benchmark for understanding the solar system debris disk, and extra-solar ones as well. <P />Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. </p> </div> <br> <dl class="s-abstract-dl-horizontal"> <dt>Publication:</dt> <dd> <div id="article-publication">Astronomy and Astrophysics</div> </dd> <dt>Pub Date:</dt> <dd>July 2010</dd> <dt>DOI:</dt> <dd> <span> <a href="/link_gateway/2010A&A...518L.146M/doi:10.1051/0004-6361/201014683" target="_blank" rel="noopener">10.1051/0004-6361/201014683</a> <i class="fa fa-external-link"></i> </span> </dd> <dt>arXiv:</dt> <dd> <span> <a href="/link_gateway/2010A&A...518L.146M/arXiv:1005.2923" target="_blank" rel="noopener">arXiv:1005.2923</a> <i class="fa fa-external-link"></i> </span> </dd> <dt>Bibcode:</dt> <dd> <a href="/abs/2010A%26A...518L.146M/abstract"> 2010A&A...518L.146M </a> <i class="icon-help" title="The bibcode is assigned by the ADS as a unique identifier for the paper."></i> </dd> <dt>Keywords:</dt> <dd> <ul class="list-inline"> <li>Kuiper belt: general;</li> <li>methods: observational;</li> <li>techniques: photometric;</li> <li>instrumentation: photometers;</li> <li>infrared: planetary systems;</li> <li>Astrophysics - Earth and Planetary Astrophysics;</li> <li>Astrophysics - Astrophysics of Galaxies</li> </ul> </dd> <dt>E-Print:</dt> <dd> 5 pages, 2 figures, accepted for publication in the A&amp </dd> </dl> </article> </div> <div data-widget="ShowCitations"></div> <div data-widget="ShowReferences"></div> <div data-widget="ShowCoreads"></div> <div data-widget="ShowSimilar"></div> <div data-widget="ShowTableofcontents"></div> <div data-widget="ShowGraphics"></div> <div data-widget="ShowExportcitation" data-origin="abstract"></div> <div data-widget="ShowMetrics" data-allow-redirect="false"></div> <div data-widget="MetaTagsWidget"></div> </div> </div> </div> <div class="s-right-col-container col-xs-12 col-sm-12 col-md-3 col-lg-2 s-right-column" id="right-col-container" > <div data-widget="ShowResources"> <div data-reactroot="" class="s-right-col-widget-container" style="padding: 10px" > <div> <div class="resources__container"> <div class="resources__full__list"> <div class="resources__header__row"> <i class="fa fa-file-text-o" aria-hidden="true"> </i> <div class="resources__header__title">full text sources</div> </div> <div class="resources__content"> <div class="resources__content__title">Publisher</div> <div class="resources__content__links"> <span> <a href="/link_gateway/2010A&A...518L.146M/PUB_PDF" rel="noopener" class="resources__content__link unlock" > <i class="fa fa-file-pdf-o" aria-hidden="true"> </i> </a> <div class="resources__content__link__separator">|</div> </span> <span> <a href="/link_gateway/2010A&A...518L.146M/PUB_HTML" rel="noopener" class="resources__content__link unlock" > <i class="fa fa-file-text" aria-hidden="true"> </i> </a> </span> </div> </div> <div class="resources__content"> <div class="resources__content__title">arXiv</div> <div class="resources__content__links"> <span> <a href="/link_gateway/2010A&A...518L.146M/EPRINT_PDF" rel="noopener" class="resources__content__link unlock" > <i class="fa fa-file-pdf-o" aria-hidden="true"> </i> </a> <div class="resources__content__link__separator">|</div> </span> <span> <a href="/link_gateway/2010A&A...518L.146M/EPRINT_HTML" rel="noopener" class="resources__content__link unlock" > <i class="fa fa-file-text" aria-hidden="true"> </i> </a> </span> </div> </div> </div> <div class="resources__data__list"> <div class="resources__header__row"> <i class="fa fa-database"></i> <div class="resources__header__title">data products</div> </div> <div class="resources__content"> <a href="/link_gateway/2010A&A...518L.146M/IRSA" rel="noopener" class="resources__content__link" >IRSA (1)</a > <a href="/link_gateway/2010A&A...518L.146M/Herschel" rel="noopener" class="resources__content__link" >Herschel (1)</a > </div> </div> </div> <div data-widget="ShowAssociated"> <div data-reactroot="" class="resources__container"> <div class="resources__header__row"> <i class="fa fa-folder-open"></i> <div class="resources__header__title"> Related Materials (10) </div> </div> <div> <div style=" font-size: 1em; 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``TNOs are Cool'': A survey of the trans-Neptunian region. I. Results from the Herschel science demonstration phase (SDP) - NASA/ADS