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Synthesis of the Beryllium 3131A Spectral Region (2005)
Presentation / Conference Contribution
Ashwell, J., F. Ashwell, J., Jeffries, R., D. Jeffries, R., & Smalley, B. (2005, July). Synthesis of the Beryllium 3131A Spectral Region. Paper presented at International Workshop on ATLAS12 and Related Codes: Application to Elemental Abundance Determination, Trieste, Italy

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.

Yields of rotating stars at solar metallicity (2005)
Journal Article
Hirschi, R., Meynet, G., & Maeder, A. (2005). Yields of rotating stars at solar metallicity. Astronomy & Astrophysics, 433(3), 1013-1022. https://doi.org/10.1051/0004-6361%3A20041554

We present a new set of stellar yields obtained from rotating stellar models at solar metallicity covering the massive star range (12-60 solar masses). The stellar models were calculated with the latest version of the Geneva stellar evolution code de... Read More about Yields of rotating stars at solar metallicity.

Young stars and their circumstellar disks in the Sigma Orionis cluster (2004)
Presentation / Conference Contribution
M. Oliveira, J., D. Jeffries, R., Th. van Loon, J., & J. Kenyon, M. (2003, April). Young stars and their circumstellar disks in the Sigma Orionis cluster. Presented at Open Issues in Local Star Formation and Early Stellar Evolution, Ouro Preto, Minas Gerais, Brazil

The sigma Orionis cluster is a young association evolving under the disruptive influence of its massive O-star namesake. We are analysing this cluster as part of a program to characterise the influence of O-stars on the early stages of stellar evolut... Read More about Young stars and their circumstellar disks in the Sigma Orionis cluster.

No disks around low-mass stars and brown dwarfs in the young sigma Orionis cluster? (2002)
Journal Article
Oliveira, J., Jeffries, R., Kenyon, M., Thompson, S., & Naylor, T. (2002). No disks around low-mass stars and brown dwarfs in the young sigma Orionis cluster?. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361%3A20011778

We report on the analysis of 2MASS near-infrared data of a sample of low-mass stars and brown dwarfs in the sigma Orionis cluster. Youth and cluster membership have been spectroscopically confirmed using the Li I spectral line. We find little evidenc... Read More about No disks around low-mass stars and brown dwarfs in the young sigma Orionis cluster?.

The Energetics of Defects and Impurities in Metals and Ionic Materials from First Principles (1992)
Thesis
De Vita, A. (1992). The Energetics of Defects and Impurities in Metals and Ionic Materials from First Principles. (Thesis). Keele University. https://keele-repository.worktribe.com/output/1240616

The study of defects in metals and ionic solids has been the subject of great theoretical and experimental interest, in basic as well as applied research areas. The present work collects two series of calculations on the energetics of a variety of de... Read More about The Energetics of Defects and Impurities in Metals and Ionic Materials from First Principles.

High-resolution studies of massive young stellar objects in the Magellanic Clouds
Thesis
High-resolution studies of massive young stellar objects in the Magellanic Clouds. https://keele-repository.worktribe.com/output/408830

This thesis presents sub-arcsecond resolution observations of massive Young Stellar Objects (YSOs) in two satellite galaxies of the Milky Way, the Magellanic Clouds. With metallicities of »0.5 and »0.2 Z¯ for the Large Magellanic Cloud (LMC) and Smal... Read More about High-resolution studies of massive young stellar objects in the Magellanic Clouds.

Discovery and characterisation of transiting extra-solar planets with the Wide Angle Search for Planets (WASP) survey
Thesis
Discovery and characterisation of transiting extra-solar planets with the Wide Angle Search for Planets (WASP) survey. https://keele-repository.worktribe.com/output/408831

In July of 2012 the WASP-South instrument was modified to allow it to collect data on brighter stars. This change was motivated by the dearth of planets known to orbit bright hosts in the southern hemisphere and the depth of study possible for HD2094... Read More about Discovery and characterisation of transiting extra-solar planets with the Wide Angle Search for Planets (WASP) survey.

Extended computation of ultrasonic wavenumber in particulate dispersions
Thesis
particulate dispersions. https://keele-repository.worktribe.com/output/409140

Methods to characterize dispersions in terms of concentration, sizes and size distribution of suspended particles promise significant commercial and industrial utility. Ultrasonic spectroscopy offers practical advantages over existing, mostly off-lin... Read More about Extended computation of ultrasonic wavenumber in particulate dispersions.

The metallicity dependence of maser emission and mass loss from red supergiants and asymptotic giant branch stars
Thesis
Goldman, S. The metallicity dependence of maser emission and mass loss from red supergiants and asymptotic giant branch stars. https://keele-repository.worktribe.com/output/409792

Asymptotic Giant Branch (AGB) stars and red supergiants (RSGs) are some of the largest contributors of dust and material back to the Universe. While a substantial
amount of RSG dust will be destroyed by the subsequent supernova, the dust from AGB st... Read More about The metallicity dependence of maser emission and mass loss from red supergiants and asymptotic giant branch stars.

Some electrical properties of alkaline earth oxides with particular reference to oxide-coated cathodes
Thesis
Some electrical properties of alkaline earth oxides with particular reference to oxide-coated cathodes. https://keele-repository.worktribe.com/output/410407

The electrical conductivity and thermionic emission from
cathodes coated with barium oxide and a mixture of barium and strontium oxides has been studied as a function of temperature in the range 2900 - 10000 degrees K employing cylindrical diodes co... Read More about Some electrical properties of alkaline earth oxides with particular reference to oxide-coated cathodes.

An electron resonance study of myoglobin single crystals
Thesis
An electron resonance study of myoglobin single crystals. https://keele-repository.worktribe.com/output/410415

The g-value end line width variations of the electron resonance spectrum, from single crystals of acid met myoglobin, have been measured in both 'high spin' and 'low spin' derivative form. The g-value variation is discussed in conjunction with the pr... Read More about An electron resonance study of myoglobin single crystals.

Work function changes of clean and contaminated metal films in vacuum and in hydrogen
Thesis
Work function changes of clean and contaminated metal films in vacuum and in hydrogen. https://keele-repository.worktribe.com/output/410419

This investigation is concerned with changes in the work functions of evaporated metal films caused by gas adsorption and variations in temperature. The importance of such changes is underlined by a description of the work function dependent discharg... Read More about Work function changes of clean and contaminated metal films in vacuum and in hydrogen.