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Synthesis of the Beryllium 3131A Spectral Region
Johanna F. Ashwell, R. D. Jeffries, B. Smalley
The Beryllium spectral region of the Sun, Procyon and 4 stars in the open cluster NGC6633 up to Teff = 7500K have been synthesised using ATLAS9 model atmospheres and the MOOG spect…
Different convection models in ATLAS
Barry Smalley
Convection is an important phenomenon in the atmospheres of A-type and cooler stars. A description of convection in ATLAS models is presented, together with details of how it is sp…
Teff and log g Determinations
Barry Smalley
A discussion on the determination of effective temperature (Teff) and surface gravity (log g) is presented. The observational requirements for model-independent fundamental paramet…
Subdwarf B Binaries from the Edinburgh--Cape Survey
L. Morales-Rueda, P. F. L. Maxted, T. R. Marsh +2
We present the first results of a campaign to obtain orbital solutions of subdwarf B (sdB) stars from the Edinburgh-Cape survey. We have obtained blue spectra of 35 sdBs, 20 of whi…
What can XMM-Newton tell us about the spin periods of Intermediate Polars?
P. A. Evans, Coel Hellier
XMM-Newton's unprecedented combination of spectral resolution and high throughput allows us to perform the best phase-resolved X-ray analysis of intermediate polars to date. The Op…