The Atmosphere Parameters and the Line Profile Variations of ρ Puppis

Details The Atmosphere Parameters and the Line Profile Variations of ρ Puppis The Atmosphere Parameters and the Line Profile Variations of ρ Puppis

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jkas...43...65y&link_type=abstract

Journal of the Korean Astronomical Society, vol. 43, no. 3, pp. 65-74

Astronomy and Astrophysics

Astronomy

1

Stars: Oscillation, Stars: Variables (Ρ Pup), Stars: Individual (Ρ Pup)

Scientific paper

We investigate ρ Pup using the high resolution spectral observations taken from the VLT archive and observations at a 1.8m-Korean telescope with BOES spectrograph.% The atmospheric parameters are determined using the iron-line abundance analysis. We derive an effective temperature value of Tef=6890±250 K, surface gravity of lgg=3.28±0.3 dex, microturbulent velocity of mˇi=4.1±0.4 kms, and the iron abundance of lgN=7.82±0.15. The projected rotational velocity of the star is close to vsini=3.5 kms. % Asymmetric line profiles in the observed spectra and variation of this asymmetry with time show that both strong radial pulsation and weak non-radial pulsations are present in ρ Pup.

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