R. J. Thomas

Searching for helium in the exosphere of HD 209458b

On the Role of the Solar Corona and Transition Region in the Excitation of the Spectrum of Neutral Helium

Elemental Abundances in the Solar Upper Atmosphere Derived by Spectroscopic Means

The Chemical Composition of the Sun

Neon and Oxygen Absolute Abundances in the Solar Corona

The Absolute Abundance of Iron in the Solar Corona

Abundance determination in solar active region

SUMER - Solar Ultraviolet Measurements of Emitted Radiation

FIRST RESULTS OF THE SUMER TELESCOPE AND SPECTROMETER ON SOHO – I. Spectra and Spectroradiometry