Ages and Age Spreads in Young Stellar Clusters (2017)
Journal Article
Jeffries, R. (2017). Ages and Age Spreads in Young Stellar Clusters. arXiv,

I review progress towards understanding the time-scales of star and cluster formation and of the absolute ages of young stars. I focus in particular on the areas in which Francesco Palla made highly significant contributions - interpretation of the H... Read More about Ages and Age Spreads in Young Stellar Clusters.

Synthesis of the Beryllium 3131A Spectral Region (2005)
Journal Article
Ashwell, J., F. Ashwell, J., Jeffries, R., D. Jeffries, R., & Smalley, B. Synthesis of the Beryllium 3131A Spectral Region. Manuscript submitted for publication

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 spectral synthesis program. The line list used for these syntheses has bee... Read More about Synthesis of the Beryllium 3131A Spectral Region.

Ages, distances, and the initial mass functions of stellar clusters (2000)
Journal Article
Jeffries, R. (2000). Ages, distances, and the initial mass functions of stellar clusters. arXiv,

We provide a review of the current status of several topics on the ages, distances, and mass functions of open clusters, with a particular emphasis on illuminating the areas of uncertainty. Hipparcos has obtained parallaxes for nearby open clusters t... Read More about Ages, distances, and the initial mass functions of stellar clusters.