Chemical abundance analysis of the Be star HD 171054

Details Chemical abundance analysis of the Be star HD 171054 Chemical abundance analysis of the Be star HD 171054

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011newa...16..307l&link_type=abstract

New Astronomy, Volume 16, Issue 5, p. 307-310.

Astronomy and Astrophysics

Astronomy

1

Scientific paper

In this work the results of a spectroscopic study of the southern field narrow-line Be star HD 171054 are presented. High dispersion and signal-to-noise ratio spectra allowed the estimation of the fundamental photospheric parameters such as the projected rotational velocity, effective temperature and superficial gravity from non-LTE stellar atmosphere models. From these parameters and microturbulence, the abundances of He, C, N, O, Mg, Al and Si for this object are estimated. Results show that C is depleted whereas N is overabundant compared with the sun and OB stars in the solar vicinity. Oxygen and helium are close to the solar value. Magnesium is down by 0.43 dex and aluminium and silicon are overabundant.

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