Results 41 to 50 of about 320,218 (320)

Massive star formation: Nurture, not nature

, 2004
We investigate the physical processes which lead to the formation of massive stars. Using a numerical simulation of the formation of a stellar cluster from a turbulent molecular cloud, we evaluate the relevant contributions of fragmentation and ...
Bate, Bate, Behrend, Benz, Bonnell, Bonnell, Bonnell, Bonnell, Bonnell, Bonnell, Bonnell, Clarke, Clarke, Delgado-Donaté, Edgar, Elmegreen, Hillenbrand, Ian A. Bonnell, Klessen, Klessen, Lada, Larson, Larson, Larson, Larson, Mac, Masunaga, Matthew R. Bate, McKee, McKee, Monaghan, Motte, Murray, Osorio, Ostriker, Padoan, Shu, Stephen G. Vine, Testi, Testi, Wolfire, Yorke, Yorke, Zinnecker   +43 more
core   +2 more sources

Massive Star Formation [PDF]

International Astronomical Union Colloquium, 1994
AbstractSeveral topics in massive star formation are discussed. These include chemical markers of the evolutionary state of massive protostellar cores, kinematic evidence for gravitational collapse, and studies of massive star formation in different environments.
openaire   +1 more source

Unveiling the Evolutionary State of Three B Supergiant Stars: PU Gem, ϵ CMa, and η CMa

Galaxies, 2023
We aim to combine asteroseismology, spectroscopy, and evolutionary models to establish a comprehensive picture of the evolution of Galactic blue supergiant stars (BSG). To start such an investigation, we selected three BSG candidates for our analysis: HD
Julieta Paz Sánchez Arias, Péter Németh, Elisson Saldanha da Gama de Almeida, Matias Agustin Ruiz Diaz, Michaela Kraus, Maximiliano Haucke   +5 more
doaj   +1 more source

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, C. L. Barbosa, Kessel O., Kraus M., P. S. Conti, Phillips C. J., R. D. Blum, Richling S., S. Ridgway, Smith L. F.   +9 more
core   +2 more sources

Gravoturbulent Star Formation: Effects of the Equation of State on Stellar Masses [PDF]

, 2005
Stars form by gravoturbulent fragmentation of interstellar gas clouds. The supersonic turbulence ubiquitously observed in Galactic molecular gas generates strong density fluctuations with gravity taking over in the densest and most massive regions ...
Jappsen, A. -K., Klessen, R. S., Spaans, M.   +2 more
core   +2 more sources

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, Appenzeller, Appenzeller, Bacmann, Ballesteros-Paredes, Baraffe, Bate, Beckwith, Beuther, Beuther, Beuther, Bjorkman, Bonanos, Bonnor, Caselli, Chini, Clark, Ebert, Federrath, Fryxell, Galván-Madrid, Gammie, Girichidis, Glover, Goldreich, Goto, Heitsch, Hennebelle, Hennebelle, Jiang, Jijina, Johnstone, Johnstone, Kahn, Kandori, Keto, Keto, Keto, Klessen, Klessen, Klessen, Klessen, Klessen, Klessen, Kratter, Krumholz, Krumholz, Krumholz, Krumholz, Kuiper, Kuiper, Kurtz, Lada, Lada, Larson, Larson, Lucy, Matzner, McKee, Mordecai-Mark Mac Low, Motte, Motte, Oey, Offner, Offner, Padoan, Peters, Peters, Ralf S. Klessen, Robi Banerjee, Selman, Sigalotti, Tan, Testi, Thomas Peters, Truelove, Vázquez-Semadeni, Wise, Yorke   +78 more
core   +1 more source

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

Magnetic Massive Stars [PDF]

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, David H. Cohen, Luc Dessart, Swetlana Hubrig, Yaël Nazé, Véronique Petit, Asif ud-Doula, Nolan R. Walborn   +7 more
openaire   +1 more source

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

The 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, Shichao Zhang, Lu Zhang, Hongjie Li   +3 more
doaj   +1 more source

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

Astronomy & 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, Grebel Eva K., Pasquali Anna, Sabbi Elena, Meena Beena, Bajaj Varun, Gallagher III John S., Elmegreen Bruce G., Bianchi Luciana, Adamo Angela, Calzetti Daniela, Cignoni Michele, Crowther Paul A., Eldridge Jan J., Gennaro Mario, Klessen Ralf S., Smith Linda J., Wofford Aida, Zeidler Peter   +18 more
doaj   +1 more source