Results 41 to 50 of about 319,282 (323)
Accretion Signatures from Massive Young Stellar Objects
, 2004 High resolution (lambda / Delta-lambda = 50,000) K-band spectra of massive, embedded, young stellar objects are presented. The present sample consists of four massive young stars located in nascent clusters powering Galactic giant H II regions.
A. Damineli +9 more
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The Astrophysical Journal Supplement Series, 2023 The young massive OB association Cygnus OB2, in the Cygnus X complex, is the closest (∼1400 pc) star-forming region to the Sun hosting thousands of young low-mass stars and up to 1000 OB stars, among which are some of the most massive stars known in our ...
M. G. Guarcello +6 more
doaj +1 more source
Limiting Accretion onto Massive Stars by Fragmentation-Induced Starvation
, 2010 Massive stars influence their surroundings through radiation, winds, and supernova explosions far out of proportion to their small numbers. However, the physical processes that initiate and govern the birth of massive stars remain poorly understood.
Appenzeller +78 more
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The Contribution of the First Stars to the Cosmic Infrared Background [PDF]
, 2001 We calculate the contribution to the cosmic infrared background from very massive metal-free stars at high redshift. We explore two plausible star-formation models and two limiting cases for the reprocessing of the ionizing stellar emission. We find that
Callaway +4 more
core +5 more sources
Supernovae from Massive Stars [PDF]
, 2017 Massive stars, by which we mean those stars exploding as core collapse supernovae, play a pivotal role in the evolution of the Universe. Therefore, the understanding of their evolution and explosion is fundamental in many branches of physics and astrophysics, among which, galaxy evolution, nucleosynthesis, supernovae, neutron stars and pulsars, black ...
openaire +3 more sources
Proceedings of the International Astronomical Union, 2007 AbstractMagnetic fields are unexpected in massive stars, due to the absence of a sub-surface convective dynamo. However, advances in instrumentation over the past three decades have led to their detection in a small but growing subset of these stars.
Rich Townsend +7 more
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Signatures of Mass Segregation from Competitive Accretion and Monolithic Collapse
The Astrophysical JournalThe two main competing theories proposed to explain the formation of massive (>10 M _⊙ ) stars—competitive accretion and monolithic core collapse—make different observable predictions for the environment of the massive stars during, and immediately after,
Richard J. Parker +3 more
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Isolated massive star candidates in NGC 4242 with the Galaxy UV Legacy Project
Astronomy & AstrophysicsContext. 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
Galaxies, 2019 Stellar evolution theory is most uncertain for massive stars. For reliable predictions of the evolution of massive stars and their final fate, solid constraints on the physical parameters, and their changes along the evolution and in different ...
Michaela Kraus
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Environments of massive stars and the upper mass limit
, 2011 The locations of massive stars (> 8 Msun) within their host galaxies is reviewed. These range from distributed OB associations to dense star clusters within giant HII regions.
Crowther, Paul A.
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