Poster Open Access

The surface magnetic field topologies of both M-dwarf components from the double-line spectroscopic binary FK Aqr

Tsvetkova, Svetla; Morin, Julien; Folsom, Colin; Alecian, Evelyne; Hussain, Gaitee; Le Bouquin, Jean-Baptiste; Neiner, Coralie; Wade, Gregg; the BinaMIcS collaboration


MARC21 XML Export

<?xml version='1.0' encoding='UTF-8'?>
<record xmlns="http://www.loc.gov/MARC21/slim">
  <leader>00000nam##2200000uu#4500</leader>
  <datafield tag="653" ind1=" " ind2=" ">
    <subfield code="a">Cool Stars on the main sequence</subfield>
  </datafield>
  <datafield tag="653" ind1=" " ind2=" ">
    <subfield code="a">Binary</subfield>
  </datafield>
  <controlfield tag="005">20210227002715.0</controlfield>
  <controlfield tag="001">4566389</controlfield>
  <datafield tag="711" ind1=" " ind2=" ">
    <subfield code="d">March 2-4, 2021</subfield>
    <subfield code="g">CS20.5</subfield>
    <subfield code="a">The 20.5th Cambridge Workshops of Cool Stars, Stellar Systems and the Sun</subfield>
    <subfield code="c">virtually anywhere</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">LUPM-UMR 5299, CNRS &amp; Université Montpellier, France</subfield>
    <subfield code="a">Morin, Julien</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">IRAP, Université de Toulouse, CNRS, CNES,Toulouse, France</subfield>
    <subfield code="a">Folsom, Colin</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">LESIA, Paris Observatory, France</subfield>
    <subfield code="a">Alecian, Evelyne</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">ESTEC, ESA, Noordwijk, The Netherlands</subfield>
    <subfield code="a">Hussain, Gaitee</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Institut de Planetologie et d'Astrophysique de Grenoble, France</subfield>
    <subfield code="a">Le Bouquin, Jean-Baptiste</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">LESIA, Paris Observatory, France</subfield>
    <subfield code="a">Neiner, Coralie</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="u">Dept. of Physics and Space Science, Royal Military College of Canada, Canada</subfield>
    <subfield code="a">Wade, Gregg</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="a">the BinaMIcS collaboration</subfield>
  </datafield>
  <datafield tag="700" ind1=" " ind2=" ">
    <subfield code="4">edt</subfield>
    <subfield code="a">Wolk, Scott</subfield>
  </datafield>
  <datafield tag="856" ind1="4" ind2=" ">
    <subfield code="s">1774743</subfield>
    <subfield code="z">md5:6da95aee7f72f5020703641bd3455429</subfield>
    <subfield code="u">https://zenodo.org/record/4566389/files/poster_Tsvetkova.pdf</subfield>
  </datafield>
  <datafield tag="542" ind1=" " ind2=" ">
    <subfield code="l">open</subfield>
  </datafield>
  <datafield tag="856" ind1="4" ind2=" ">
    <subfield code="y">Conference website</subfield>
    <subfield code="u">http://coolstars20.cfa.harvard.edu/cs20half/index.html</subfield>
  </datafield>
  <datafield tag="260" ind1=" " ind2=" ">
    <subfield code="c">2021-02-26</subfield>
  </datafield>
  <datafield tag="909" ind1="C" ind2="O">
    <subfield code="p">openaire</subfield>
    <subfield code="p">user-coolstars20half</subfield>
    <subfield code="o">oai:zenodo.org:4566389</subfield>
  </datafield>
  <datafield tag="100" ind1=" " ind2=" ">
    <subfield code="u">LUPM-UMR 5299, CNRS &amp; Université Montpellier, France</subfield>
    <subfield code="a">Tsvetkova, Svetla</subfield>
  </datafield>
  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">The surface magnetic field topologies of both M-dwarf components from the double-line spectroscopic binary FK Aqr</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">user-coolstars20half</subfield>
  </datafield>
  <datafield tag="540" ind1=" " ind2=" ">
    <subfield code="u">https://creativecommons.org/licenses/by/4.0/legalcode</subfield>
    <subfield code="a">Creative Commons Attribution 4.0 International</subfield>
  </datafield>
  <datafield tag="650" ind1="1" ind2="7">
    <subfield code="a">cc-by</subfield>
    <subfield code="2">opendefinition.org</subfield>
  </datafield>
  <datafield tag="520" ind1=" " ind2=" ">
    <subfield code="a">&lt;p&gt;This study is part of the BinaMIcS project which aims to understand the interaction between binarity and magnetism in different type of stars. Here, we present FK Aqr (GJ 867 A) &amp;ndash; a double-line spectroscopic binary system consisting of two dM1-dwarfs with similar masses (0.55 Msun and 0.45 Msun for the primary and secondary, respectively). We were able to reconstruct the first maps of the surface magnetic field topologies of both components by employing the Zeeman Doppler imaging method. The data were obtained with ESPaDOnS spectropolarimeter at CFHT. Clear Stokes V signatures are detected from all observations of both components. The longitudinal magnetic field of the secondary is two times stronger than the primary&amp;rsquo;s one. The reconstructed maps show that both M-dwarfs have dipolar structures of their large-scale magnetic fields. This is in agreement with previous studies showing that M-dwarf stars, even in close binary pairs, can generate surface magnetic fields displaying a strong axisymmetric dipole component. We also note that the components of FK Aqr are among the most massive M-dwarfs known to generate this type of magnetic field.&lt;strong&gt; &lt;/strong&gt;Orbital parameters of the system are refined employing the PHOEBE software based on the measurements of the radial velocities of both components from the mean Stokes I profiles.&lt;/p&gt;</subfield>
  </datafield>
  <datafield tag="773" ind1=" " ind2=" ">
    <subfield code="n">doi</subfield>
    <subfield code="i">isVersionOf</subfield>
    <subfield code="a">10.5281/zenodo.4566388</subfield>
  </datafield>
  <datafield tag="024" ind1=" " ind2=" ">
    <subfield code="a">10.5281/zenodo.4566389</subfield>
    <subfield code="2">doi</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">poster</subfield>
  </datafield>
</record>
86
73
views
downloads
All versions This version
Views 8686
Downloads 7373
Data volume 129.6 MB129.6 MB
Unique views 7878
Unique downloads 6868

Share

Cite as