<?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>S0185-11012023000200299</article-id>
<article-id pub-id-type="doi">10.22201/ia.01851101p.2023.59.02.09</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Solar-type eclipsing binary KIC 4832197: Physical properties and intrinsic variability of the components]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Özdarcan]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dal]]></surname>
<given-names><![CDATA[H. A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<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[,Ege University Faculty of Sciences Department of Astronomy and Space Sciences]]></institution>
<addr-line><![CDATA[Bornova Izmir]]></addr-line>
<country>Turkey</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>59</volume>
<numero>2</numero>
<fpage>299</fpage>
<lpage>312</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-11012023000200299&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-11012023000200299&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-11012023000200299&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Comprehensive analysis of optical spectroscopy and space photometry of the solar type eclipsing binary system KIC4832197 is presented. The system is composed of F7V + F9V components with masses of M1 = 1.16 ± 0.12 M&#8857;, M2 = 1.07 ± 0.10 M&#8857; and radii of R 1 = 1.26 ± 0.04 R &#8857;, R 2 = 1.03 ± R &#8857;. The position of the components on the Log T  eff - Log L/L &#8857; plane suggests an age of 2.8 ± 0.8 Gyr for the system. Inspection of out-of-eclipse brightness in time reveals a wave-like variability pattern, whose amplitude and shape quickly change on order of days. Frequency analysis of this variability results in two significant peaks in the amplitude spectrum, which are interpreted as rotational modulation of spots on the components. Assuming both spots are on the same component, a lower limit for the differential rotation coefficient is computed as k = 0.12, which is weaker compared to the solar value of k&#8857; = 0.189.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Presentamos un análisis de la espectroscopia óptica y fotometría de la binaria eclipsante tipo solar KIC4832197. El sistema se compone de dos estrellas F7V + F9V, con masas de M1 = 1.16 ± 0.12 M&#8857;, M2 = 1.07 ± 0.10 M&#8857; y radios de R 1 = 1.26 ± 0.04 R &#8857;, R 2 = 1.03 ± R &#8857;. La posición de las componentes en el plano Log T  eff - Log L/L &#8857; sugiere una edad de 2.8 ± 0.8 Gyr. La inspección del brillo fuera de eclipse revela una variabilidad ondulatoria, cuya amplitud y forma cambian rápidamente, en días. El análisis de la frecuencia de esta variabilidad arroja dos picos significativos en el espectro de amplitud, que se interpretan como una modulación rotacional de manchas en las componentes. Si suponemos que ambas manchas están en una de las componentes, calculamos un límite inferior para el coeficiente de rotación diferencial de k = 0.12, más pequeño que el valor solar, que es k&#8857; = 0.189.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[binaries: eclipsing]]></kwd>
<kwd lng="en"><![CDATA[stars: activity]]></kwd>
<kwd lng="en"><![CDATA[stars: fundamental parameters]]></kwd>
<kwd lng="en"><![CDATA[stars: individual: KIC4832197]]></kwd>
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