<?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>S0185-11012017000200013</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Spectroscopic Orbits of Three Binaries]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Scarfe]]></surname>
<given-names><![CDATA[C. D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Victoria Department of Physics and Astronomy ]]></institution>
<addr-line><![CDATA[Victoria ]]></addr-line>
<country>Canada</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,National Research Council of Canada  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2017</year>
</pub-date>
<volume>53</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-11012017000200013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-11012017000200013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-11012017000200013&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This paper presents new spectroscopic orbits of three binaries with evolved primaries and periods of the order of a few years, two of them very eccentric. All the orbits were determined primarily from observations made with the DAO 1.2-m telescope and coudé spectrograph. Observations were obtained using the radial velocity spectrometer until it was decommissioned in 2004, and since then using a CCD detector, and cross-correlating the spectra with those of standard stars. It will be evident that the latter procedure leads to smaller observational scatter than the former did.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se presentan nuevas órbitas para tres binarias espectroscópicas con primarias evolucionadas y períodos de algunos años, dos de ellas muy excéntricas. Las órbitas se determinaron principalmente a partir de observaciones realizadas con el telescopio de 1.2 m y el espectrógrfo coudé del DAO. Las observaciones se hicieron con el espectrómetro para velocidades radiales hasta que fue descontinuado en 2004. A partir de entonces se utilizó un detector CCD, efectuando una correlación cruzada con espectros de estrellas estándar. Es evidente que este último procedimiento reduce la dispersión observacional.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[binaries]]></kwd>
<kwd lng="en"><![CDATA[spectroscopic]]></kwd>
<kwd lng="en"><![CDATA[stars: individual (6 Persei HR 8078 HD 212989)]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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