<?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>S0185-11012021000200351</article-id>
<article-id pub-id-type="doi">10.22201/ia.01851101p.2021.57.02.08</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Chromospheric activity nature of KIC 6044064]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yolda&#351;]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Ege Department of Astronomy and Space Sciences ]]></institution>
<addr-line><![CDATA[&#304;zmir ]]></addr-line>
<country>Turkey</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>57</volume>
<numero>2</numero>
<fpage>351</fpage>
<lpage>361</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-11012021000200351&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-11012021000200351&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-11012021000200351&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This study presents results obtained from the data of KIC 6044064 (KOI 6652). KIC 6044064 was observed by the Kepler Mission for a total of 1384.254 days. 525 minima times were determined, 264 of which were primary minima and the rest were secondary minima. The OPEA model was derived and its parameters were obtained. On the secondary component, there are two different spot bands latitudinally outstretched, consisting of three spots located with a phase interval of 0.33. The average migration period was found to be 623.063±4.870 days (1.71 ± 0.01 years) for the first spot group, while it was 1125.514 ± 7.305 days (3.08 ± 0.02 years) for the second group. The spectral types of the components seem to be G7V + K9V. Their masses and radii were determined to be  0.86   M  &#8857; and  0.89   R  &#8857; for the primary component and  0.54   M  &#8857; and  0.62   R  &#8857; for the secondary component.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Presentamos resultados obtenidos con los datos de KIC 6044064 (KOI 6652) que fue observada por la misión Kepler durante un total de 1384.254 días. Se determinaron 525 tiempos de mínimo, de los cuales 264 fueron mínimos primarios y el resto ssecundarios. Se obtuvo el modelo OPEA y sus parámetros. En la componente secundaria se encuentran dos bandas distintas de manchas extendidas en latitud, con tres manchas ubicadas a 0.33 de intervalo de fase. Se determinó un período promedio de migración de 623.063 ± 4.870 días (1.71 ± 0.01 años) para el primer grupo de manchas, y de 1125.514 ± 7.305 días (3.08 ± 0.02 años)para el segundo grupo. Los tipos espectrales de las componentes son G7V + K9V. Se obtuvieron valores para las masas y radios de las componentes de  0.86   M  &#8857; y  0.89   R  &#8857; para la primaria, y de  0.54   M  &#8857; y  0.62   R  &#8857; para la secundaria.]]></p></abstract>
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