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  <front>
    <journal-meta>
      <journal-id journal-id-type="ojs">izvcrao</journal-id>
      <journal-id journal-id-type="publisher-id" xml:lang="ru">
                       Изв. Крымск. Астрофиз. Обсерв.
                </journal-id>
      <journal-id journal-id-type="publisher-id" xml:lang="en">
                        Izv. Krymsk. Astrofiz. Observ.
                    </journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">
                    Известия Крымской астрофизической обсерватории
                </journal-title>
        <trans-title-group xml:lang="en">
          <trans-title>Izvestiya Krymskoi Astrofizicheskoi Observatorii</trans-title>
        </trans-title-group>
      </journal-title-group>
      <issn pub-type="ppub">0367-8466</issn>
      <issn pub-type="epub">3034-4107</issn>
      <publisher>
        <publisher-name>Киселев Н.Н., пос. Московский, Москва, РФ</publisher-name>
        <publisher-loc>RU</publisher-loc>
      </publisher>
      <self-uri xlink:href="https://jncrao.ru/index.php/izvcrao"/>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id">754</article-id>
      <article-categories>
        <subj-group xml:lang="ru" subj-group-type="heading">
          <subject>Материалы конференции</subject>
        </subj-group>
        <subj-group xml:lang="en" subj-group-type="heading">
          <subject>Сonference proceedings</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="ru">Optical variability of NGC 4151 during past 100 years </article-title>
        <trans-title-group xml:lang="en">
          <trans-title>Optical variability of NGC 4151 during past 100 years </trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group content-type="author">
        <contrib>
          <name-alternatives>
            <name name-style="western" xml:lang="en" specific-use="">
              <surname> Chuvaev</surname>
              <given-names>K.K.</given-names>
            </name>
          </name-alternatives>
          <xref ref-type="aff" rid="aff-1"/>
        </contrib>
        <contrib>
          <name-alternatives>
            <name name-style="western" xml:lang="en" specific-use="">
              <surname>Oknyanskij</surname>
              <given-names>V.L. </given-names>
            </name>
          </name-alternatives>
          <xref ref-type="aff" rid="aff-2"/>
        </contrib>
        <contrib>
          <name-alternatives>
            <name name-style="western" xml:lang="en" specific-use="">
              <surname> Lyuty</surname>
              <given-names>V.M.</given-names>
            </name>
          </name-alternatives>
          <xref ref-type="aff" rid="aff-3"/>
        </contrib>
      </contrib-group>
      <aff id="aff-1">
        <institution content-type="orgname" xml:lang="ru">НИИ “Крымская астрофизическая обсерватория”, 98409, Украина, Крым, Научный </institution>
        <institution content-type="orgname" xml:lang="en">Crimean Astrophysical Observatory, Nauchny, 298409</institution>
      </aff>
      <aff id="aff-2">
        <institution content-type="orgname" xml:lang="en">Sternberg State Astronomical Institute, Moscow, 119991, Russia, Universitetsky prospekt 13 </institution>
      </aff>
      <aff id="aff-3">
        <institution content-type="orgname" xml:lang="en">Sternberg State Astronomical Institute, Moscow, 119991, Russia, Universitetsky prospekt 13 </institution>
      </aff>
      <pub-date date-type="pub" iso-8601-date="2008-05-31">
        <day>31</day>
        <month>05</month>
        <year>2008</year>
      </pub-date>
      <volume>104</volume>
      <issue>3</issue>
      <fpage>109</fpage>
      <lpage>113</lpage>
      <history>
        <date date-type="received" iso-8601-date="2020-05-23">
          <day>23</day>
          <month>05</month>
          <year>2020</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">Copyright (c) 2008 , , </copyright-statement>
        <copyright-statement xml:lang="en">Copyright (c) 2008 Chuvaev K., Oknyanskij V., Lyuty V.</copyright-statement>
        <copyright-year>
					2008
				</copyright-year>
        <copyright-holder xml:lang="ru">, , </copyright-holder>
        <copyright-holder xml:lang="en">Chuvaev K., Oknyanskij V., Lyuty V.</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p> Метаданные этой статьи доступны по лицензии  Creative Commons «Attribution» («Атрибуция») 4.0 Всемирная.  
 Авторское право и право на публикацию текстов, представленных в журнале  "Известия Крымской астрофизической обсерватории", сохраняются за авторами, при этом право первой публикации предоставляется журналу. Тексты могут свободно использоваться при условии правильного цитирования с указанием авторства в соответствии с лицензией  Creative Commons «Attribution» («Атрибуция») 4.0 Всемирная.  
     </license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p> The metadata for this submission is licensed under a  Creative Commons Attribution 4.0 International License.  
 Copyright and publishing rights for texts published in Izvestiya Krymskoi Astrofizicheskoi Observatorii is retained by the authors, with first publication rights granted to the journal.Texts are free to use with proper attribution and link to the licensing  (Creative Commons Attribution 4.0 International).  
     </license-p>
        </license>
      </permissions>
      <self-uri xlink:href="https://jncrao.ru/index.php/izvcrao/article/view/754"/>
      <abstract xml:lang="en">
        <p> We present historical optical light curve of NGC 4151 over 1906–2007 based on our photographic and photoelectric data as well as other published photometrical data reduced to the same system.&amp;nbsp;We have found quasi-periodic component about 15.6 years in the 100-year light curve and that is close to our old result.&amp;nbsp;We present results of optical spectrophotometry during 1972–1991 using the monitoring data of K.K. Chuvaev.&amp;nbsp;We have performed the cross-correlation analysis to find out time delays between continuum and line variations. </p>
      </abstract>
      <counts>
        <page-count count="5"/>
      </counts>
    </article-meta>
  </front>
  <body/>
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</article>
