<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0185-1101</journal-id>
<journal-title><![CDATA[Revista mexicana de astronomía y astrofísica]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. astron. astrofis]]></abbrev-journal-title>
<issn>0185-1101</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Astronomía]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-11012014000200014</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Kinematics of the galactic supernova remnant G206.9+2.3]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ambrocio-Cruz]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosado]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Le Coarer]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bernal]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<xref ref-type="aff" rid="A04"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Autónoma del Estado de Hidalgo Instituto de Ciencias Básicas e Ingeniería ]]></institution>
<addr-line><![CDATA[Mineral de la Reforma Hidalgo]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Astronomía ]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
<country>México</country>
</aff>
<aff id="A03">
<institution><![CDATA[,Université Joseph Fourier Laboratoire d'Astrophysique de Grenoble ]]></institution>
<addr-line><![CDATA[Grenoble ]]></addr-line>
<country>France</country>
</aff>
<aff id="A04">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Astronomía ]]></institution>
<addr-line><![CDATA[Ensenada B.C.]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2014</year>
</pub-date>
<volume>50</volume>
<numero>2</numero>
<fpage>323</fpage>
<lpage>328</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-11012014000200014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-11012014000200014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-11012014000200014&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se realizó un estudio cinemático del remanente de supernova galáctico G206.9+2.3 (PKS 0646+06) en las líneas [SII]&#955;6717 y 6731 Å. Este es uno de los primeros pasos de un proyecto a largo plazo de determinación de distancias cinemáticas a RSN galácticos con contraparte óptica. Se obtuvo la distancia cinemática a esta nebulosa, mostrando primero que los filamentos detectados son realmente la contraparte óptica del RSN en radio. La distancia estimada en este trabajo es ligeramente mayor que la distancia de Monoceros. Se estimó que G206.9+2.3 está localizada a 2.2 kpc del Sol, en una región del cielo donde se observan varias nebulosas superpuestas a diferentes velocidades. Se midió una velocidad de choque de 86 kms-1 y un diámetro lineal de 18 pe. Finalmente se calculó que la energía depositada al medio interestelar por la explosión de supernova es de 1.7 x 10(49) ergs por lo que se concluyó que G206.9+2.3 está en la fase radiativa de su evolución, con una edad de 6.4 x 10(4) años.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[We studied the kinematics of the galactic supernova remnant (SNR) G206.9+2.3 (PKS 0646+06) in the [SII]&#955;6717 and 6731 Å lines, as one of the initial steps of a long-term project to determine kinematical distances to galactic SNRs with optical counterparts. We obtained the kinematic distance to this nebula by first showing that the filaments detected were in fact the optical counterpart of the radio SNR. The distance estimated here is slightly greater than that of the Monoceros Loop. We estimate that G206.9+2.3 is located about 2.2 kpc from the Sun, in a zone where several background and foreground nebulae at different velocities are seen in projection. We measured a shock velocity of 86 kms-1 and a linear diameter of 18 pc. Finally, we calculated the energy deposited in the interstellar medium by the SN explosion as 1.7 x 10(49) ergs and concluded that the SNR is in the radiative phase of evolution with an age of 6.4 x 10(4) years.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[HII regions]]></kwd>
<kwd lng="en"><![CDATA[ISM]]></kwd>
<kwd lng="en"><![CDATA[ISM]]></kwd>
<kwd lng="en"><![CDATA[ISM]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="center"><font face="verdana" size="4"><b>Kinematics of the galactic supernova remnant G206.9+2.3</b></font></p>  	    <p>&nbsp;</p>  	    <p align="center"><font face="verdana" size="2"><b>P. Ambrocio&#45;Cruz,<sup>1</sup> M. Rosado,<sup>2</sup> E. Le Coarer,<sup>3</sup> A. Bernal,<sup>2</sup> and L. Guti&eacute;rrez<sup>4</sup></b></font></p>  	    <p>&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><sup><i>1</i></sup><i>&nbsp;Instituto de Ciencias B&aacute;sicas e Ingenier&iacute;a, Universidad Aut&oacute;noma del Estado de Hidalgo, Ciudad Universitaria, Km 4.5 Carretera Pachuca&#45;Tulancingo; Col. Carboneras C.P. 42184, Mineral de la Reforma, Hidalgo, M&eacute;xico </i>(<a href="mailto:patricia@astro.unam.mx">patricia@astro.unam.mx</a>)<i>.</i></font></p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>2</sup> Instituto de Astronom&iacute;a, Universidad Nacional Aut&oacute;noma de M&eacute;xico, Apdo. Postal 70&#45;264, M&eacute;xico, D.F., 04510, M&eacute;xico </i>(<i>margarit,</i> <a href="mailto:abel@astro.unam.mx">abel@astro.unam.mx</a>)<i>.</i></font></p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>3</sup> Laboratoire d'Astrophysique de Grenoble, Universit&eacute; Joseph Fourier, B.P. 53 Grenoble CEDEX 9, France </i>(<a href="mailto:Etienne.Le&#45;Coarer@obs.ujf&#45;grenoble.fr">Etienne.Le&#45;Coarer@obs.ujf&#45;grenoble.fr</a>)<i>.</i></font></p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>4</sup> Instituto de Astronom&iacute;a, Universidad Nacional Aut&oacute;noma de M&eacute;xico, Ensenada B.C., M&eacute;xico </i>(<a href="mailto:leonel@astro.unam.mx">l</a><a href="mailto:leonel@astro.unam.mx">eonel@astro.unam.mx</a>)<i>.</i></font></p>      <p>&nbsp;</p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Received February 17 2014.    <br> 	Accepted August 1 2014.</font></p>  	    <p>&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><b>RESUMEN</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Se realiz&oacute; un estudio cinem&aacute;tico del remanente de supernova gal&aacute;ctico G206.9&#43;2.3 (PKS 0646&#43;06) en las l&iacute;neas &#91;SII&#93;&#955;6717 y 6731 &#197;. Este es uno de los primeros pasos de un proyecto a largo plazo de determinaci&oacute;n de distancias cinem&aacute;ticas a RSN gal&aacute;cticos con contraparte &oacute;ptica. Se obtuvo la distancia cinem&aacute;tica a esta nebulosa, mostrando primero que los filamentos detectados son realmente la contraparte &oacute;ptica del RSN en radio. La distancia estimada en este trabajo es ligeramente mayor que la distancia de Monoceros. Se estim&oacute; que G206.9&#43;2.3 est&aacute; localizada a 2.2 kpc del Sol, en una regi&oacute;n del cielo donde se observan varias nebulosas superpuestas a diferentes velocidades. Se midi&oacute; una velocidad de choque de 86 kms<sup>&#45;1</sup> y un di&aacute;metro lineal de 18 pe. Finalmente se calcul&oacute; que la energ&iacute;a depositada al medio interestelar por la explosi&oacute;n de supernova es de 1.7 x 10<sup>49</sup> ergs por lo que se concluy&oacute; que G206.9&#43;2.3 est&aacute; en la fase radiativa de su evoluci&oacute;n, con una edad de 6.4 x 10<sup>4</sup> a&ntilde;os.</font></p>  	    <p>&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><b>ABSTRACT</b></font></p>  	    <p align="justify"><font face="verdana" size="2">We studied the kinematics of the galactic supernova remnant (SNR) G206.9&#43;2.3 (PKS 0646&#43;06) in the &#91;SII&#93;&#955;6717 and 6731 &#197; lines, as one of the initial steps of a long&#45;term project to determine kinematical distances to galactic SNRs with optical counterparts. We obtained the kinematic distance to this nebula by first showing that the filaments detected were in fact the optical counterpart of the radio SNR. The distance estimated here is slightly greater than that of the Monoceros Loop. We estimate that G206.9&#43;2.3 is located about 2.2 kpc from the Sun, in a zone where several background and foreground nebulae at different velocities are seen in projection. We measured a shock velocity of 86 kms<sup>&#45;1</sup> and a linear diameter of 18 pc. Finally, we calculated the energy deposited in the interstellar medium by the SN explosion as 1.7 x 10<sup>49</sup> ergs and concluded that the SNR is in the radiative phase of evolution with an age of 6.4 x 10<sup>4</sup> years.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Key Words:</b> HII regions &#151; ISM: individual objects (G206.9&#43;2.3) &#151; ISM: kinematics and dynamics &#151; ISM: supernova remnants</font>.</p>  	    <p>&nbsp;</p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><a href="/pdf/rmaa/v50n2/v50n2a14.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    <p>&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><b>ACKNOWLEDGMENTS</b></font></p>  	    <p align="justify"><font face="verdana" size="2">We wish to thank the referee for carefully reading the manuscript and for providing valuable comments and suggestions, which have helped us improve the manuscript. This work was partially financed by PROMEP&#45; Incorporaci&oacute;n de Nuevos PTC (UAEH&#45;PTC&#45;514).</font></p>  	    <p>&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><b>REFERENCES</b></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">Brand, J., &amp; Blitz, L. 1993, A &amp; A, 275, 67</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=7444571&pid=S0185-1101201400020001400001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">Caswell, J. L. 1970, Australian J. 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