All Outputs (12)

Star Formation in the Eagle Nebula (2008)
Book Chapter
M. Oliveira, J. (2008). Star Formation in the Eagle Nebula. In Handbook of Star Forming Regions: Volume II, The Southern Sky. Astronomical Society of the Pacific

M16 (the Eagle Nebula) is a striking star forming region, with a complex morphology of gas and dust sculpted by the massive stars in NGC 6611. Detailed studies of the famous ``elephant trunks'' dramatically increased our understanding of the massive... Read More about Star Formation in the Eagle Nebula.

Massive Stars as Cosmic Engines through the Ages (2008)
Journal Article
Hirschi, R. (2008). Massive Stars as Cosmic Engines through the Ages. Proceedings of the International Astronomical Union, 3-16. https://doi.org/10.1017/S1743921308020292

Some useful developments in the model physics are briefly presented, followed by model results on chemical enrichments and WR stars. We discuss the expected rotation velocities of WR stars. We emphasize that the (C+O)/He ratio is a better chemical in... Read More about Massive Stars as Cosmic Engines through the Ages.

The impact of reduced mass loss rates on the evolution of massive stars (2008)
Conference Proceeding
Hirschi, R. (2008). The impact of reduced mass loss rates on the evolution of massive stars.

Mass loss is a very important aspect of the life of massive stars. After briefly reviewing its importance, we discuss the impact of the recently proposed downward revision of mass loss rates due to clumping (difficulty to form Wolf-Rayet stars and pr... Read More about The impact of reduced mass loss rates on the evolution of massive stars.

Time-lapse geophysical investigations over a simulated urban clandestine grave (2008)
Journal Article
Pringle, J. K., Jervis, J., Cassella, J. P., & Cassidy, N. J. (2008). Time-lapse geophysical investigations over a simulated urban clandestine grave. Journal of Forensic Sciences, 53(6), 1405 -1416. https://doi.org/10.1111/j.1556-4029.2008.00884.x

A simulated clandestine shallow grave was created within a heterogeneous, made-ground, urban environment where a clothed, plastic resin, human skeleton, animal products, and physiological saline were placed in anatomically correct positions and re-co... Read More about Time-lapse geophysical investigations over a simulated urban clandestine grave.

Contribution of the second Landau level to the exchange energy of the three-dimensional electron gas in a high magnetic field (2008)
Journal Article
(2008). Contribution of the second Landau level to the exchange energy of the three-dimensional electron gas in a high magnetic field. Physical review B: Condensed matter and materials physics, https://doi.org/10.1103/PhysRevB.78.085107

We derive a closed analytical expression for the exchange energy of the three-dimensional interacting electron gas in strong magnetic fields, which goes beyond the quantum limit (L=0) by explicitly including the effect of the second, L=1, Landau lev... Read More about Contribution of the second Landau level to the exchange energy of the three-dimensional electron gas in a high magnetic field.

Spatial Distribution of Nucleosynthesis Products in Cassiopeia A: Comparison Between Observations and 3D Explosion Models (2008)
Presentation / Conference
(2008, July). Spatial Distribution of Nucleosynthesis Products in Cassiopeia A: Comparison Between Observations and 3D Explosion Models. Presented at 10th Symposium on Nuclei in the Cosmos, Mackinac Island, Michigan, USA

We examine observed heavy element abundances in the Cassiopeia A supernova remnant as a constraint on the nature of the Cas A supernova. We compare bulk abundances from 1D and 3D explosion models and spatial distribution of elements in 3D models with... Read More about Spatial Distribution of Nucleosynthesis Products in Cassiopeia A: Comparison Between Observations and 3D Explosion Models.

44Ti and 56Ni in core-collapse supernovae (2008)
Presentation / Conference
Magkotsios, G., Timmes, F. X., Wiescher, M., Fryer, C. L., Hungerford, A., Young, P., …Rockefeller, G. (2008, July). 44Ti and 56Ni in core-collapse supernovae. Paper presented at 10th Symposium on Nuclei in the Cosmos, Mackinac Island, Michigan, USA

We investigate the physical conditions where 44Ti and 56Ni are created in core-collapse supernovae. In this preliminary work we use a series of post-processing network calculations with parametrized expansion profiles that are representative of the w... Read More about 44Ti and 56Ni in core-collapse supernovae.

Difficulties in Probing Nuclear Physics: A Study of Ti and Ni (2008)
Presentation / Conference
Hungerford, A., Fryer, C. L., Timmes, F. X., Young, P., Bennett, M., Diehl, S., …Rockefeller, G. (2008, July). Difficulties in Probing Nuclear Physics: A Study of Ti and Ni. Paper presented at 10th Symposium on Nuclei in the Cosmos, Mackinac Island, Michigan, USA

The nucleosynthetic yield from a supernova explosion depends upon a variety of effects: progenitor evolution, explosion process, details of the nuclear network, and nuclear rates. Especially in studies of integrated stellar yields, simplifications re... Read More about Difficulties in Probing Nuclear Physics: A Study of Ti and Ni.

Orbital-polarization terms: From a phenomenological to a first-principles description of orbital magnetism in density-functional theory (2008)
Journal Article
(2008). Orbital-polarization terms: From a phenomenological to a first-principles description of orbital magnetism in density-functional theory. International Journal of Quantum Chemistry, 2433 -2441. https://doi.org/10.1002/qua.21784

Phenomenological orbital-polarization (OP) terms have been repeatedly introduced in the single-particle equations of spin-density-functional theory, in order to improve the description of orbital magnetic moments in systems containing transition meta... Read More about Orbital-polarization terms: From a phenomenological to a first-principles description of orbital magnetism in density-functional theory.

The star formation process in the Magellanic Clouds (2008)
Journal Article
M. Oliveira, J. (2008). The star formation process in the Magellanic Clouds. Proceedings of the International Astronomical Union, https://doi.org/10.1017/S1743921308028457

The Magellanic Clouds offer unique opportunities to study star formation both on the global scales of an interacting system of gas-rich galaxies, as well as on the scales of individual star-forming clouds. The interstellar media of the Small and Larg... Read More about The star formation process in the Magellanic Clouds.

Stellar Evolution in the Early Universe (2008)
Journal Article
Hirschi, R., Frischknecht, U., -K. Thielemann, F., Pignatari, M., Chiappini, C., Ekstroem, S., …Maeder, A. (2008). Stellar Evolution in the Early Universe. Proceedings of the International Astronomical Union, 4(S255), https://doi.org/10.1017/S1743921308024976

Massive stars played a key role in the early evolution of the Universe. They formed with the first halos and started the re-ionisation. It is therefore very important to understand their evolution. In this paper, we describe the strong impact of rota... Read More about Stellar Evolution in the Early Universe.

Geophysical characterization of derelict coalmine workings and mineshaft detection: a case study from Shrewsbury, United Kingdom (2008)
Journal Article
Stimpson, Pringle, Pringle, J., Stimpson, I., Toon, S., Caunt, S., …Styles, P. (2008). Geophysical characterization of derelict coalmine workings and mineshaft detection: a case study from Shrewsbury, United Kingdom. Near Surface Geophysics, 6(3), 185 -194. https://doi.org/10.3997/1873-0604.2008014

A study site of derelict coalmine workings near Shrewsbury, United Kingdom was the focus for multi-phase, near-surface geophysical investigations. Investigation objectives were: 1) site characterization for remaining relict infrastructure foundations... Read More about Geophysical characterization of derelict coalmine workings and mineshaft detection: a case study from Shrewsbury, United Kingdom.