<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Astronomy Reports</journal-id><journal-title-group><journal-title xml:lang="en">Astronomy Reports</journal-title><trans-title-group xml:lang="ru"><trans-title>Астрономический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0004-6299</issn><issn publication-format="electronic">3034-5170</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">647591</article-id><article-id pub-id-type="doi">10.31857/S0004629923090128</article-id><article-id pub-id-type="edn">UGRMJG</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">THE ROLE OF MERIDIONAL CIRCULATION IN THE FORMATION OF CLASSICAL BE-STARS</article-title><trans-title-group xml:lang="ru"><trans-title>Роль меридиональной циркуляции в образовании классических звезд типа Be</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Staritsin</surname><given-names>E. I.</given-names></name><name xml:lang="ru"><surname>Старицин</surname><given-names>Е. И.</given-names></name></name-alternatives><email>Evgeny.Staritsin@urfu.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Kourovka Astronomical Observatory, Yeltsin Ural Federal University</institution></aff><aff><institution xml:lang="ru">Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, 
Коуровская астрономическая обсерватория им. К.А. Бархатовой</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-09-01" publication-format="electronic"><day>01</day><month>09</month><year>2023</year></pub-date><volume>100</volume><issue>9</issue><fpage>834</fpage><lpage>838</lpage><history><date date-type="received" iso-8601-date="2025-01-28"><day>28</day><month>01</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Е.И. Старицин</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Е.И. Старицин</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Е.И. Старицин</copyright-holder><copyright-holder xml:lang="ru">Е.И. Старицин</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0004-6299/article/view/647591">https://journals.eco-vector.com/0004-6299/article/view/647591</self-uri><abstract xml:lang="en"><p id="idm45257554484192">At the stage of mass exchange in the binary system, the meridional circulation brings to the surface of the star up to two-thirds of the angular momentum that entered the star along with the accreted matter. As a result, an increase in the mass and angular momentum of the star due to accretion becomes possible. After the accretion ends, the star has a rotation typical of fast-rotating Be stars. It is assumed that the angular momentum carried by the meridional circulation to the surface of the star from the accreted matter is removed from the star by the accretion disk. The paper is based on a talk presented at the astrophysical memorial seminar “Novelties in Understanding the Evolution of Binary Stars”, dedicated to the 90th anniversary of Professor M.A. Svechnikov.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45257554483392">На стадии обмена веществом в двойной системе меридиональная циркуляция выносит к поверхности звезды до двух третей момента импульса, поступившего в звезду вместе с аккрецированным веществом. В результате становится возможным увеличение массы и момента импульса звезды вследствие аккреции. После окончания аккреции звезда имеет вращение, типичное для быстровращающихся Ве-звезд. Предполагается, что момент импульса, вынесенный меридиональной циркуляцией к поверхности звезды из аккрецированного вещества, отводится от звезды аккреционным диском. Статья основана на докладе, сделанном на астрофизическом мемориальном семинаре “Новое в понимании эволюции двойных звезд”, приуроченном к 90-летию профессора М.А. Свечникова.</p></trans-abstract><kwd-group xml:lang="en"><kwd>binaries: close</kwd><kwd>stars: emission-line</kwd><kwd>Be</kwd><kwd>stars: rotation</kwd><kwd>stars: early-type</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>звезды класса B</kwd><kwd>двойные системы</kwd><kwd>строение и эволюция звезд</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>J. M. Porter and T. Rivinius, Publ. Astron. Soc. Pacific 115, 1153 (2003).</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>S. R. Cranmer, Astrophys. J. 634, 585 (2005).</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>W. Huang, D. R. Gies, and M. V. McSwain, Astrophys. J. 722, 605 (2010).</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>R. Chini, V. H. Hoffmeister, A. Nasseri, O. Stahl, and H. Zinnecker, Monthly Not. Roy. Astron. Soc. 424, 1925 (2012).</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>H. Sana, S. E. de Mink, A. de Koter, N. Langer, et al., Science 337, 444 (2012).</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>O. R. Pols, J. Cote, L. B. F. M. Waters, and J. Heise, Astron. and Astrophys. 241, 419 (1991).</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>S. F. Portegies Zwart, Astron. and Astrophys. 296, 691 (1995).</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>J. Van Bever and D. Vanbeveren, Astron. and Astrophys. 322, 116 (1997).</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Y. Shao and X.-D. Li, Astrophys. J. 796, id. 37 (2014).</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>B. Hastings, N. Langer, C. Wang, A. Schootemeijer, and A. P. Milone, Astron. and Astrophys. 653, id. A144 (2021).</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>R. H. Kaitchuck and R. K. Honeycutt, Astrophys. J. 258, 224 (1982).</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>H. Cugier and P. Molaro, Astron. and Astrophys. 140, 105 (1984).</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>R. H. Kaitchuck, Publ. Astron. Soc. Pacific 100, 594 (1988).</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>R. H. Kaitchuck, Space Sci. Rev. 50, 51 (1989).</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>M. T. Richards, Astrophys. J. 387, 329 (1992).</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>P. B. Etzel, E. C. Olson, and M. C. Senay, Astron. J. 109, 1269 (1995).</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>M. T. Richards, A. S. Cocking1, J. G. Fisher, and M. J. Conover, Astrophys. J. 795, id. 160 (2014).</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>J. M. Blondin, M. T. Richards, and M. L. Malinowski, Astrophys. J. 445, 939 (1995).</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>M. T. Richards and M. A. Ratliff, Astrophys. J. 493, 326 (1998).</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>D. V. Bisikalo, P. Harmanec, A. A. Boyarchuk, O. A. Kuz-netsov, and P. Hadrava, Astron. and Astrophys. 353, 1009 (2000).</mixed-citation></ref><ref id="B21"><label>21.</label><mixed-citation>E. Raymer, Monthly Not. Roy. Astron. Soc. 427, 1702 (2012).</mixed-citation></ref><ref id="B22"><label>22.</label><mixed-citation>B. Paczynski, Astrophys. J. 370, 597 (1991).</mixed-citation></ref><ref id="B23"><label>23.</label><mixed-citation>R. Popham and R. Narayan, Astrophys. J. 370, 604 (1991).</mixed-citation></ref><ref id="B24"><label>24.</label><mixed-citation>G. S. Bisnovatyi-Kogan, Astron. and Astrophys. 274, 796 (1993).</mixed-citation></ref><ref id="B25"><label>25.</label><mixed-citation>J.-P. Zahn, Astron. and Astrophys. 265, 115 (1992).</mixed-citation></ref><ref id="B26"><label>26.</label><mixed-citation>Ж.-Л. Тассуль, Теория вращающихся звезд (М.: Мир, 1982).</mixed-citation></ref><ref id="B27"><label>27.</label><mixed-citation>A. S. Eddington, Observatory 48, 73 (1925).</mixed-citation></ref><ref id="B28"><label>28.</label><mixed-citation>H. Vogt, Astron. Nachricht. 223, 229 (1925).</mixed-citation></ref><ref id="B29"><label>29.</label><mixed-citation>A. Maeder and J.-P. Zahn, Astron. and Astrophys. 334, 1000 (1998).</mixed-citation></ref><ref id="B30"><label>30.</label><mixed-citation>S. Talon and J.-P. Zahn, Astron. and Astrophys. 317, 749 (1997).</mixed-citation></ref><ref id="B31"><label>31.</label><mixed-citation>A. Maeder, Astron. and Astrophys. 399, 267 (2003).</mixed-citation></ref><ref id="B32"><label>32.</label><mixed-citation>S. Mathis, A. Palacios, and J.-P. Zahn, Astron. and Astrophys. 425, 243 (2004).</mixed-citation></ref><ref id="B33"><label>33.</label><mixed-citation>B. Paczynski, Acta Astronomica 20, 47 (1970).</mixed-citation></ref><ref id="B34"><label>34.</label><mixed-citation>Е. И. Старицин, Астрон. журн. 76, 678 (1999).</mixed-citation></ref><ref id="B35"><label>35.</label><mixed-citation>Е. И. Старицин, Астрон. журн. 82, 710 (2005).</mixed-citation></ref><ref id="B36"><label>36.</label><mixed-citation>Е. И. Старицин, Письма в Астрон. журн. 33, 111 (2007).</mixed-citation></ref><ref id="B37"><label>37.</label><mixed-citation>Е. И. Старицин, Письма в Астрон. журн. 35, 459 (2009).</mixed-citation></ref><ref id="B38"><label>38.</label><mixed-citation>E. I. Staritsin, Res. Astron. and Astrophys. 22, id. 105015 (2022).</mixed-citation></ref><ref id="B39"><label>39.</label><mixed-citation>E. I. Staritsin, Astrophys. Space Sci. 364, 110 (2019).</mixed-citation></ref><ref id="B40"><label>40.</label><mixed-citation>A. G. Massevitch, A. V. Tutukov, and L. R. Yungel’son, Astrophys. Space Sci. 40, 115 (1976).</mixed-citation></ref><ref id="B41"><label>41.</label><mixed-citation>Е. И. Старицин, Астрон. журн. 68, 306 (1991).</mixed-citation></ref><ref id="B42"><label>42.</label><mixed-citation>E. Staritsin, Astron. and Astrophys. 646, id. A90 (2021).</mixed-citation></ref></ref-list></back></article>
