About: The puzzling binary HD 143418     Goto   Sponge   NotDistinct   Permalink

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  • HD 143418 is a double-lined binary, whose primary was designated as CP star. We acquired new spectra in order to study spectral line variability, a possible magnetic field and for abundance determination, which was performed by means of synthetic spectra. The photometric observations were subjected to a PCA disentangling of the complex photometric behaviour. Equivalent widths of the lines selected do not change; the star has no magnetic field. The abundance agrees solar chemical composition. The photometric variability is due to ellipticity of the primary component. We conclude the primary is a normal, mildly evolved A5V main sequence star. Seasonal orbitally modulated light variations may be related to the expected incidence of circumstellar matter originated from tidally spinning up primary component. HD 143418 may be a prototype of a rare detached interacting close binary containing subsynchronously rotating primary passing through its synchronisation stage.
  • HD 143418 is a double-lined binary, whose primary was designated as CP star. We acquired new spectra in order to study spectral line variability, a possible magnetic field and for abundance determination, which was performed by means of synthetic spectra. The photometric observations were subjected to a PCA disentangling of the complex photometric behaviour. Equivalent widths of the lines selected do not change; the star has no magnetic field. The abundance agrees solar chemical composition. The photometric variability is due to ellipticity of the primary component. We conclude the primary is a normal, mildly evolved A5V main sequence star. Seasonal orbitally modulated light variations may be related to the expected incidence of circumstellar matter originated from tidally spinning up primary component. HD 143418 may be a prototype of a rare detached interacting close binary containing subsynchronously rotating primary passing through its synchronisation stage. (en)
Title
  • The puzzling binary HD 143418
  • The puzzling binary HD 143418 (en)
skos:prefLabel
  • The puzzling binary HD 143418
  • The puzzling binary HD 143418 (en)
skos:notation
  • RIV/00216224:14310/09:00028628!RIV10-MSM-14310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(IAA301630901), P(MEB080832)
http://linked.open...iv/cisloPeriodika
  • 506
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 337720
http://linked.open...ai/riv/idVysledku
  • RIV/00216224:14310/09:00028628
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • stars: chemically peculiar - stars: binaries - stars:variables - stars: individual HD 143418 -- synchronisation} (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • FR - Francouzská republika
http://linked.open...ontrolniKodProRIV
  • [1218848CA97B]
http://linked.open...i/riv/nazevZdroje
  • Astronomy and Astrophysics
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 39
http://linked.open...iv/tvurceVysledku
  • Mikulášek, Zdeněk
  • Krtička, Jiří
  • Zverko, Juraj
  • Žižnovský, Jozef
  • Kudryavtsev, Dmitry O.
  • Romanyuk, Iosif I.
  • Iliev, Ilian Kh.
  • Stateva, I. K.
http://linked.open...ain/vavai/riv/wos
  • 000271374800033
issn
  • 0004-6361
number of pages
http://localhost/t...ganizacniJednotka
  • 14310
is http://linked.open...avai/riv/vysledek of
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