Element stratification in roAp stars. 10 Aquilae (HD176232)

Details Element stratification in roAp stars. 10 Aquilae (HD176232) Element stratification in roAp stars. 10 Aquilae (HD176232)

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008coska..38..329n&link_type=abstract

Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 38, no. 2, p. 329-334.

Astronomy and Astrophysics

Astronomy

1

Stars: Abundances, Stars: Atmospheres, Stars: Chemically Peculiar, Stars: Magnetic Fields

Scientific paper

We present the results of our analysis of the vertical element stratification in the atmospheres of 9 roAp stars. Using high resolution observations (R≈100000) obtained with the ESO-VLT spectrograph UVES and state of the art model atmosphere and spectral synthesis codes, we analysed the inhomogeneous vertical distribution of Mg, Si, Ca, Cr, Fe and Sr in 10Aquilae (HD176232) and Fe stratification in the whole sample. We present the derived vertical abundance map of 10 Aquilae's atmosphere and compare our findings with Fe stratification profiles of all roAp stars.

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