Surface lithium abundance distribution and magnetic field for four roAp stars

  • N. Polosukhina НИИ “Крымская астрофизическая обсерватория” КНУ им. Т. Шевченко, Научный, АР Крым, Украина, 98409
  • D. Shulyak Georg-August University, G¨ottingen, Germany
  • A. Shavrina Main Astronomical Observatory of NAS of Ukraine, Kyiv, Ukraine
  • D. Lyashko Tavrical National V.I. Vernadsky University, Simferopol, Crimea, Ukraine
  • N.A. Drake Sobolev Astronomical Institute, St. Petersburg State University, St. Petersburg, Russia ; Observatorio Nacional/MCTI, Rio de Janeiro, Brazil
  • Yu. Glagolevski Special Astrophysical Observatory of RAS, Nizhnii Arkhyz, Russia
  • M. Smirnova НИИ “Крымская астрофизическая обсерватория” КНУ им. Т. Шевченко, Научный, АР Крым, Украина, 98409
  • D. Kudryavtsev Special Astrophysical Observatory of RAS, Nizhnii Arkhyz, Russia

Аннотация

High-resolution spectra obtained with the 6-m BTA telescope, Russia, and with HARPS and VLT/UVES telescopes at ESO, Chile, were used for Doppler Imaging analysis of two roAp stars, HD 12098 and HD 60435, showing strong and variable Li resonance line in their spectra. We found that Li has highly inhomogeneous distribution on the surfaces of these stars. We compared our results with previously obtained Doppler Imaging mapping of two CP2 stars, HD 83368 and HD 3980, and discuss correlation between the position of high Li-abundance spots and magnetic field.

Количество загрузок статьи

Данные загрузок статьи пока недоступны.
Просмотров аннотации: 22
Загрузок PDF: 9
Опубликован
2013-07-01
Как цитировать
Polosukhina N., Shulyak D., Shavrina A., и др., 2013. Известия Крымской астрофизической обсерватории, Т. 109, № 3, С. 107-113. Доступно на: https://jn.craocrimea.ru/index.php/izvcrao/article/view/408 (Дата доступа: 11август2022)
Раздел
Материалы конференции