Results 51 to 60 of about 980,367 (312)

Massive stars in their death throes [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2008
The study of the stars that explode as supernovae used to be a forensic study, working backwards from the remnants of the star. This changed in 1987 when the first progenitor star was identified in pre-explosion images. Currently, there are eight detected progenitors with another 21 non-detections, for which only a limit on the pre-explosion luminosity
openaire   +3 more sources

Nucleosynthesis of 60Fe in massive stars [PDF]

open access: yesNew 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

Evolution of Massive Population III Stars

open access: yesActa Polytechnica CTU Proceedings, 2014
While the evolution of massive stars in the local Universe is dominated by mass-loss, the evolution of massive Population III stars should be dominated by rotation.
Sung-Chul Yoon
doaj   +1 more source

The MiMeS survey of Magnetism in Massive Stars : magnetic analysis of the O-type stars [PDF]

open access: yes, 2016
We present the analysis performed on spectropolarimetric data of 97 O-type targets included in the framework of the Magnetism in Massive Stars (MiMeS) Survey. Mean least-squares deconvolved Stokes I and V line profiles were extracted for each observation,
J. Grunhut   +13 more
semanticscholar   +1 more source

Monotonicity of the Cores of Massive Stars

open access: yesThe 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   +2 more
openaire   +4 more sources

Dynamical ejections of massive stars from young star clusters under diverse initial conditions [PDF]

open access: yes, 2016
We study the effects of initial conditions of star clusters and their massive star population on dynamical ejections of massive stars from star clusters up to an age of 3 Myr.
Seungkyung Oh, P. Kroupa
semanticscholar   +1 more source

Models for the formation of massive stars [PDF]

open access: yes, 2009
The formation of massive stars is currently an unsolved problems in astrophysics. Understanding the formation of massive stars is essential because they dominate the luminous, kinematic, and chemical output of stars. Furthermore, their feedback is likely to play a dominant role in the evolution of molecular clouds and any subsequent star formation ...
Krumholz, Mark R., Bonnell, Ian A.
openaire   +2 more sources

Presupernova structure of massive stars [PDF]

open access: yesAstrophysics and Space Science, 2011
Proceedings for invited talk at High Energy Density Laboratory Astrophysics conference, Caltech, March 2010.
Meakin, Casey A.   +2 more
openaire   +2 more sources

A Study of Abundance Patterns in the Sextans and Sculptor Dwarf Spheroidal Galaxies

open access: yesThe Astrophysical Journal
In this work, we employ a multicomponent decomposition model to study the Sextans and Sculptor dwarf spheroidal galaxies, which have distinct evolutionary histories.
Shuaishuai Yang   +3 more
doaj   +1 more source

Isolated massive star candidates in NGC 4242 with the Galaxy UV Legacy Project

open access: yesAstronomy & Astrophysics
Context. There is considerable debate about the formation of massive stars, including whether a high-mass star must always form with a population of low-mass stars, or if it can also form in isolation.
Facchini Pietro   +18 more
doaj   +1 more source

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