All Outputs (9)

Dynamical shear instability (2004)
Journal Article
Hirschi, R., Maeder, A., & Meynet, G. (2004). Dynamical shear instability. Proceedings of the International Astronomical Union, 215, 510 - 511

The dynamical shear instability is an important mixing process in the advanced stages of the evolution of massive stars. We calculated different models of 15 Mo with an initial rotational velocity, v(rot,ini)= 300 km/s to investigate its efficiency.... Read More about Dynamical shear instability.

Using Balmer line profiles to investigate convection in A and F stars (2004)
Journal Article
Smalley, B., & Kupka, F. (2004). Using Balmer line profiles to investigate convection in A and F stars. Proceedings of the International Astronomical Union,

Balmer lines are an important diagnostic of stellar atmospheric structure, since they are formed at a wide range of depths within the atmosphere. The different Balmer lines are formed at slightly different depths making them useful atmospheric diagno... Read More about Using Balmer line profiles to investigate convection in A and F stars.

Model atmosphere analyses of post-common envelope stars (2004)
Journal Article
T. Rushton, M., Smalley, B., N. Ogley, R., H. Wood, J., H. Hauschildt, P., & N. Bleach, J. (2004). Model atmosphere analyses of post-common envelope stars. Proceedings of the International Astronomical Union,

Understanding post-common-envelope evolution is important in the studies of close-binary systems. The majority of all interacting binaries with a compact object in their system (e.g. cataclysmic variables, X-ray binaries) are thought to have passed t... Read More about Model atmosphere analyses of post-common envelope stars.

Young stars and their circumstellar disks in the Sigma Orionis cluster (2004)
Conference Proceeding
M. Oliveira, J., D. Jeffries, R., Th. van Loon, J., & J. Kenyon, M. (2004). Young stars and their circumstellar disks in the Sigma Orionis cluster. In Open Issues in Local Star Formation (55–62). https://doi.org/10.1007/1-4020-2600-5_6

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.

Studies on the Role of Fluoride Ion vs Reaction Concentration in Zeolite Synthesis (2004)
Journal Article
Zones, S. I., Darton, R. J., Morris, R., & Hwang, S. (2005). Studies on the Role of Fluoride Ion vs Reaction Concentration in Zeolite Synthesis. Journal of Physical Chemistry B, 109(1), 652-661. https://doi.org/10.1021/jp0402434

This work is an experimental response to an intriguing paper recently published by Catlow and co-workers, which looked at the computational feasibility of fluorine location in three different all-silica zeotypes (Attfield, M. P.; Catlow, C. R. A.; So... Read More about Studies on the Role of Fluoride Ion vs Reaction Concentration in Zeolite Synthesis.

Stellar evolution with rotation XII: Pre-supernova models (2004)
Journal Article
Hirschi, R., Meynet, G., & Maeder, A. (2004). Stellar evolution with rotation XII: Pre-supernova models. Astronomy & Astrophysics, 425, 649-670. https://doi.org/10.1051/0004-6361%3A20041095

We describe the latest developments of the Geneva stellar evolution code in order to model the pre-supernova evolution of rotating massive stars. Rotating and non-rotating stellar models at solar metallicity with masses equal to 12, 15, 20, 25, 40 an... Read More about Stellar evolution with rotation XII: Pre-supernova models.

The Li Overabundance of J37: Diffusion or Accretion? (2004)
Journal Article
F. Ashwell, J., Jeffries, R. D., Smalley, B., P. Deliyannis, C., Steinhauer, A., & R. King, J. (2004). The Li Overabundance of J37: Diffusion or Accretion?. Proceedings of the International Astronomical Union, 2004(IAUS224), https://doi.org/10.1017/S1743921305009385

In September 2002 the discovery of a super Li-rich F-dwarf (J37) in NGC 6633, an iron poor analogue of the better studied Hyades and Praecepe open clusters, was announced. This unique star was thought to be the smoking gun for the action of diffusion... Read More about The Li Overabundance of J37: Diffusion or Accretion?.

Accurate fundamental parameters of eclipsing binary stars (2004)
Journal Article
Southworth, J., Smalley, B., Maxted, P., & Etzel, P. (2004). Accurate fundamental parameters of eclipsing binary stars. Proceedings of the International Astronomical Union, 2004(IAUS224), 548-561. https://doi.org/10.1017/S1743921305009324

The study of detached eclipsing binaries is one of the most powerful ways to investigate the properties of individual stars and stellar systems. We present preliminary masses, radii and effective temperatures for the eclipsing binary WW Aurigae, whic... Read More about Accurate fundamental parameters of eclipsing binary stars.

Mid-infrared observations of young stellar objects in the vicinity of sigma Orionis (2004)
Journal Article
Oliveira, J. M., & van Loon, J. T. (2004). Mid-infrared observations of young stellar objects in the vicinity of sigma Orionis. Astronomy & Astrophysics, 418(2), https://doi.org/10.1051/0004-6361%3A20034518

We present new mid-infrared observations of objects in the vicinity of the O-star sigma Orionis, obtained with TIMMI-2 at ESO. By constraining their near- and mid-infrared spectral energy distributions, we established the nature of previously known I... Read More about Mid-infrared observations of young stellar objects in the vicinity of sigma Orionis.