Results 31 to 40 of about 887,903 (202)

The Complex Upper HR Diagram

Galaxies, 2019
Several decades of observations of the most massive and most luminous stars have revealed a complex upper HR Diagram, shaped by mass loss, and inhabited by a variety of evolved stars exhibiting the consequences of their mass loss histories.
Roberta M. Humphreys
doaj   +1 more source

Search for Young and Intermediate-age Stellar Populations in the Galactic Center with Subaru/MOIRCS and CO Narrowband Filters

The Astrophysical Journal, 2023
Extinction toward the Galactic Center (GC) is extreme and limits observations of its stars to the infrared. In addition, the extinction varies on scales of arcseconds.
Shogo Nishiyama, Naoya Funamoto, Rainer Schödel   +2 more
doaj   +1 more source

Developments in Physics of Massive Stars [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractNew constraints on stellar models are provided by large surveys of massive stars, interferometric observations and asteroseismology. After a review of the main results so far obtained, we present new results from rotating models and discuss comparisons with observed features. We conclude that rotation is a key feature of massive star physics.
Meynet, G, Ekstrom, S, Maeder, A, Hirschi, R, Georgy, C, Beffa, C   +5 more
openaire   +3 more sources

Neutrino radiation hydrodynamics in hot and dense nuclear matter and the role of microphysics in simulations of massive stars [PDF]

, 2010
The main results of my doctoral studies were obtained from core collapse simulations of massive stars using a numerical model based on radiation hydrodynamics and three-flavour Boltzmann neutrino transport in spherical symmetry.
Fischer, Tobias
core   +1 more source

Nucleosynthesis of 60Fe in massive stars [PDF]

New Astronomy Reviews, 2006
We discuss at some extent the production of Fe60 in massive stars in the range between 11 and 120 Msun both in the hydrostatic and explosive stages. We also compare the Fe60/Al26 gamma-ray line flux ratio obtained according to the present calculations to the detected value reported by INTEGRAL/SPI.
Limongi, M., Chieffi, A.
openaire   +2 more sources

The VLT-FLAMES survey of massive stars: observations in the Galactic clusters NGC3293, NGC4755 and NGC6611 [PDF]

, 2005
We introduce a new survey of massive stars in the Galaxy and the Magellanic Clouds using the Fibre Large Array Multi- Element Spectrograph ( FLAMES) instrument at the Very Large Telescope ( VLT).
C. J. Evans, Urbaneja, M.A., Hendry, Maggie, D. J. Lennon, J.-K. Lee, Lrzybilla, N., C. Trundle, P. L. Dufton, Lennon, Daniel, R. S. I. Ryans, Dufton, P.L., F. Najarro, Langer, N., J. Puls, Trundle, C., Smartt, Stephen; id_orcid, Smartt, S.J., N. Przybilla, Ryans, Robert, A. J. Korn, Sim�n-D�az, S., Kudritzki, R., Najarro, F., M. A. Urbaneja, Dufton, Philip, Przybilla, N., W.-R. Hamann, Mokiem, M.R., Hunter, I., Lee, J.K., Trundle, Carrie, Hamann, W.R., Pauldrach, A.W.A., de Koter, A., Kaufer, A., Herrero, A., A. Herrero, A. Kaufer, Venn, K.A., Kudritzki, R.P., Evans, C.J., Lennon, D.J., Puls, J., Villamariz, M.R., Hendry, M.A., Ryans, R.S.I., M. R. Villamariz, S. Simón-Díaz, I. Hunter, A. W. A. Pauldrach, M. A. Hendry, Kudritzki, R.-P., Hamann, W.-R., M. J. Irwin, R.-P. Kudritzki, N. Langer, Paildrach, A.W.A., K. A. Venn, Lee, J-K., Irwin, M.J., S. J. Smartt, M. R. Mokiem, Simon-Diaz, S., A. de Koter, Korn, A.J.   +64 more
core   +2 more sources

New Candidate Massive Clusters from 2MASS [PDF]

, 2013
Massive stars are important for the evolution of the interstellar medium. The detailed study of their properties (such as mass loss, rotation, magnetic fields) is enormously facilitated by samples of these objects in young massive galactic star clusters.
Dirk Froebrich, Froebrich, Dirk
core   +1 more source

Presupernova structure of massive stars [PDF]

Astrophysics and Space Science, 2011
Proceedings for invited talk at High Energy Density Laboratory Astrophysics conference, Caltech, March 2010.
Meakin, Casey A., Sukhbold, Tuguldur, Arnett, David   +2 more
openaire   +2 more sources

Monotonicity of the Cores of Massive Stars

The Astrophysical Journal, 2023
Abstract Massive stars are linked to diverse astronomical processes and objects including star formation, supernovae and their remnants, cosmic rays, interstellar media, and galaxy evolution. Understanding their properties is of primary importance for modern astronomy, and finding simple rules that characterize them is especially useful.
Koh Takahashi, Tomoya Takiwaki, Takashi Yoshida   +2 more
openaire   +4 more sources

Asteroseismology of High-Mass Stars: New Insights of Stellar Interiors With Space Telescopes

Frontiers in Astronomy and Space Sciences, 2020
Massive stars are important metal factories in the Universe. They have short and energetic lives, and many of them inevitably explode as a supernova and become a neutron star or black hole.
Dominic M. Bowman
doaj   +1 more source