Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-25T16:23:40.959Z Has data issue: false hasContentIssue false
  • English
  • Français

roAp stars: surface lithium abundance distribution and magnetic field configuration

Published online by Cambridge University Press:  07 August 2014

N. Polosukhina ,
D. Shulyak ,
A. Shavrina ,
D. Lyashko ,
N. A. Drake ,
Yu. Glagolevski ,
D. Kudryavtsev  and
M. Smirnova
N. Polosukhina
Affiliation:
Crimean Astrophysical Observatory, Nauchnyi, Ukraine, email: [email protected]
D. Shulyak
Affiliation:
Georg-August University, Göttingen, Germany, email: [email protected]
A. Shavrina
Affiliation:
Main Astronomical Observatory of NAS of Ukraine, Kyiv, Ukraine, email: [email protected]
D. Lyashko
Affiliation:
Taurida National V. I. Vernadsky University, Simferopol, Crimean Autonomous Republic, Ukraine, email: [email protected]
N. A. Drake
Affiliation:
Sobolev Astronomical Institute, St. Petersburg State University, St. Petersburg, Russia Observatório Nacional/MCTI, Rio de Janeiro, Brazil, email: [email protected]
Yu. Glagolevski
Affiliation:
Special Astrophysical Observatory of RAS, Nizhnii Arhyz, Russia, email: [email protected]
D. Kudryavtsev
Affiliation:
Special Astrophysical Observatory of RAS, Nizhnii Arhyz, Russia, email: [email protected]
M. Smirnova
Affiliation:
Crimean Astrophysical Observatory, Nauchnyi, Ukraine, email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

High-resolution spectra obtained with the 6m 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 the correlation between the position of the high Li-abundance spots and magnetic field.

Keywords

stars: abundances – stars: chemically peculiar – stars: magnetic field – stars: individual: HD 3980HD 12098HD 60435HD 83368
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S302: Magnetic Fields throughout Stellar Evolution , August 2013 , pp. 309 - 310
Copyright
Copyright © International Astronomical Union 2014 

References

Kochukhov, O., Drake, N. A., Piskunov, N., & de la Reza, R. 2004, A&A, 424, 935Google Scholar
Kurtz, D. W., van Wyk, F., Marang, F. 1990 MNRAS, 243, 289Google Scholar
Nesvacil, N., Lüftinger, T., Shulyak, D.et al. 2012, A&A, 537, A151Google Scholar
Piskunov, N. E. & Rice, J. B. 1993, PASP, 105, 1415CrossRefGoogle Scholar
Polosukhina, N., Kurtz, D., Hack, M.et al. 1999, A&A, 351, 283Google Scholar
Polosukhina, N., Shavrina, A., Drake, N. A.et al. 2004, A-Star Puzzle, Proc. IAU Symp. 224, Cambridge University Press, 2004, 665Google Scholar
Polosukhina, N., Shavrina, A., Drake, N. A., & Smirnova, M. 2012, MSAIS, 22, 129Google Scholar
Ryabchikova, T., Wade, G. A., Aurière, M.et al. 2005, A&A, 429, 55Google Scholar
Shavrina, A. V., Polosukhina, N. S., Zverko, J.et al. 2001, A&A, 372, 571Google Scholar
Shavrina, A. V., Polosukhina, N. S., Drake, N. A., & Kudryavtsev, D. O. 2008, Astrophysics, 51, 517CrossRefGoogle Scholar