FUSE Observations of EC14026 Stars

Details FUSE Observations of EC14026 Stars FUSE Observations of EC14026 Stars

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.291..359c&link_type=abstract

Astrophysics and Space Science, v. 291, Issue 3, p. 359-366 (2004).

Astronomy and Astrophysics

Astrophysics

14

Diffusion, Abundances, Oscillations, Horizontal-Branch, Subdwarfs

Scientific paper

We present a FUSE abundance analysis of EC14026 stars. We compare the abundances of heavy elements in the atmospheres of EC14026 stars to non-pulsating stars with similar atmospheric parameters, and investigate whether weak stellar winds could explain the coexistence of variable and non-variable sdB stars in the log g Teff diagram. We also present preliminary results on time-dependent diffusion calculations of iron in presence of radiative levitation and mass loss, and show how weak stellar winds can affect the diffusive equilibrium between gravitational settling and radiative support.

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