All Outputs (5)

Code dependencies of pre-supernova evolution and nucleosynthesis in massive stars: Evolution to the end of core helium burning (2015)
Journal Article
Jones, S., Hirschi, R., Pignatari, M., Heger, A., Georgy, C., Nishimura, N., …Herwig, F. (2015). Code dependencies of pre-supernova evolution and nucleosynthesis in massive stars: Evolution to the end of core helium burning. Monthly Notices of the Royal Astronomical Society, 447(4), 3115-3129. https://doi.org/10.1093/mnras/stu2657

Massive stars are key sources of radiative, kinetic, and chemical feedback in the universe. Grids of massive star models computed by different groups each using their own codes, input physics choices and numerical approximations, however, lead to inc... Read More about Code dependencies of pre-supernova evolution and nucleosynthesis in massive stars: Evolution to the end of core helium burning.

The R136 star cluster hosts several stars whose individual masses greatly exceed the accepted 150 Msun stellar mass limit (2010)
Journal Article
Hirschi. (2010). The R136 star cluster hosts several stars whose individual masses greatly exceed the accepted 150 Msun stellar mass limit. Monthly Notices of the Royal Astronomical Society, 731 -751. https://doi.org/10.1111/j.1365-2966.2010.17167.x

Spectroscopic analyses of H-rich WN5-6 stars within the young star clusters NGC 3603 and R136 are presented, using archival HST & VLT spectroscopy, & high spatial resolution near-IR photometry. We derive high T* for the WN stars in NGC 3603 (T*~42+/-... Read More about The R136 star cluster hosts several stars whose individual masses greatly exceed the accepted 150 Msun stellar mass limit.

NuGrid: s process in massive stars (2008)
Journal Article
Frischknecht, U., Thielemann, F., -K. Thielemann, F., Pignatari, M., Bennett, M., Diehl, S., …Hirschi, R. NuGrid: s process in massive stars. Manuscript submitted for publication

The s-process production in massive stars at very low metallicities is expected to be negligible due to the low abundance of the neutron source 22Ne, to primary neutron poisons and decreasing iron seed abundances. However, recent models of massive st... Read More about NuGrid: s process in massive stars.

Nucleosynthesis simulations for a wide range of nuclear production sites from NuGrid (2008)
Journal Article
Herwig, F., Fryer, C., Hirschi, R., Bennett, M., L. Fryer, C., Diehl, S., …Young, P. Nucleosynthesis simulations for a wide range of nuclear production sites from NuGrid. Manuscript submitted for publication

Simulations of nucleosynthesis in astrophysical environments are at the intersection of nuclear physics reaction rate research and astrophysical applications, for example in the area of galactic chemical evolution or near-field cosmology. Unfortunate... Read More about Nucleosynthesis simulations for a wide range of nuclear production sites from NuGrid.

Yields of rotating stars at solar metallicity (2004)
Journal Article
Hirschi, R., Meynet, G., & Maeder, A. Yields of rotating stars at solar metallicity. https://doi.org/10.1051/0004-6361%3A20041554. Manuscript submitted for publication

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.