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  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher-id">aa</journal-id>
      <journal-title-group>
        <journal-title>Astronomy and Astrophysics</journal-title>
        <abbrev-journal-title abbrev-type="publisher">A&amp;A</abbrev-journal-title>
      </journal-title-group>
      <issn pub-type="ppub">0004-6361</issn>
      <issn pub-type="epub">1432-0746</issn>
      <publisher>
        <publisher-name>EDP Sciences</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.1051/0004-6361/201014485</article-id>
      <article-id pub-id-type="publisher-id">aa14485-10</article-id><article-id pub-id-type="other">2010A%26A...516A..97N</article-id>
      <article-categories>
        <subj-group xml:lang="en" subj-group-type="section">
          <subject content-type="12">Atomic, molecular, and nuclear data</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Dielectronic recombination of argon-like ions</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Nikolić</surname>
            <given-names>D.</given-names>
          </name>
          <xref ref-type="aff" rid="AFF1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Gorczyca</surname>
            <given-names>T. W.</given-names>
          </name>
          <xref ref-type="aff" rid="AFF1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Korista</surname>
            <given-names>K. T.</given-names>
          </name>
          <xref ref-type="aff" rid="AFF1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Badnell</surname>
            <given-names>N. R.</given-names>
          </name>
          <xref ref-type="aff" rid="AFF2">2</xref>
        </contrib>
      </contrib-group>
      <aff id="AFF1">
        <label>1</label>
        <addr-line>Department of Physics, Western Michigan University, Kalamazoo, MI 49008, USA e-mail: gorczyca@wmich.edu
 </addr-line>
      </aff>
      <aff id="AFF2">
        <label>2</label>
        <addr-line>
Department of Physics, University of Strathclyde, Glasgow G4 0NG, UK
 </addr-line>
      </aff><pub-date pub-type="final"><day>21</day><month>07</month><year>2010</year></pub-date><pub-date pub-type="epub"><day>21</day><month>07</month><year>2010</year></pub-date>
      <pub-date pub-type="ppub">
        <month>06</month>
        <year>2010</year>
      </pub-date>
      <volume>516</volume><issue-id pub-id-type="publisher-id">aa/2010/08</issue-id>
      <elocation-id>A97</elocation-id>
      <history>
        <date date-type="received">
          <day>23</day>
          <month>3</month>
          <year>2010</year>
        </date>
        <date date-type="accepted">
          <day>16</day>
          <month>4</month>
          <year>2010</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>© ESO, 2010</copyright-statement>
        <copyright-year>2010</copyright-year>
        <copyright-holder>ESO</copyright-holder>
      </permissions>
      <abstract xml:lang="en">
        <p><italic>Context. </italic>
 We present a theoretical investigation of dielectronic recombination (DR) of Ar-like ions that sheds new light
 on the behavior of the rate coefficient at low-temperatures where these ions form in photoionized plasmas.
 </p>
        <p><italic>Aims. </italic>
 We provide results for the total and partial Maxwellian-averaged DR rate coefficients from the
 initial ground level of K <sc>ii</sc>–Zn <sc>xiii</sc> ions. It is expected that these new results will
 advance the accuracy of the ionization balance for Ar-like M-shell ions and pave the way towards a
 detailed modeling of astrophysically relevant X-ray absorption features.
 </p>
        <p><italic>Methods. </italic>
 We utilize the AUTOSTRUCTURE computer code to obtain the accurate core-excitation thresholds in target
 ions and carry out multiconfiguration Breit-Pauli (MCBP) calculations of the DR cross section in the independent-processes,
 isolated-resonance, distorted-wave (IPIRDW) approximation.
 </p>
        <p><italic>Results. </italic>
 Our results mediate the complete absence of direct DR calculations for certain Ar-like ions and question
 the reliability of the existing empirical rate formulas, often inferred from renormalized data within this
 isoelectronic sequence.
 </p>
      </abstract>
      <kwd-group xml:lang="en">
        <kwd>atomic data </kwd>
        <kwd>atomic processes </kwd>
        <kwd>plasmas </kwd>
        <kwd>scattering </kwd>
      </kwd-group>
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          <meta-value>A&amp;A 516, A97 (2010)</meta-value>
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        <custom-meta>
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          <meta-value>June-July 2010</meta-value>
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          <meta-value>06</meta-value>
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  </front>
</article>
