Results 51 to 60 of about 1,207,219 (318)

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

PARSEC evolutionary tracks of massive stars up to 350 M ☉ at metallicities 0.0001 ≤ Z ≤ 0.04 [PDF]

, 2015
We complement the PARSEC data base of stellar evolutionary tracks with new models of massive stars, from the pre-main sequence phase to the central carbon ignition. We consider a broad range of metallicities, 0.0001$\leq Z \leq$0.04 and initial masses up
Yang Chen, A. Bressan, L. Girardi, P. Marigo, X. Kong, A. Lanza   +5 more
semanticscholar   +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

On the ongoing multiple blowout in NGC 604 [PDF]

, 2000
Several facts regarding the structure of NGC 604 are examined here. The three main cavities, produced by the mechanical energy from massive stars which in NGC 604 are spread over a volume of 10$^6$ pc$^3$, are shown here to be undergoing blowout into the
Casiana Munoz‐Tunon, Diaz I., Enrique Perez, Guillermo Tenorio‐Tagle, Gustavo Medina‐Tanco, Jesus Maiz‐Apellaniz, Maiz-Apellaniz J., Perez E., Tenorio-Tagle G., Terlevich E., Viallefond F.   +10 more
core   +2 more sources

An unstable truth: how massive stars get their mass [PDF]

, 2016
The pressure exerted by massive stars' radiation fields is an important mechanism regulating their formation. Detailed simulation of massive star formation therefore requires an accurate treatment of radiation.
A. Rosen, M. Krumholz, C. McKee, R. Klein   +3 more
semanticscholar   +1 more source

A Census of B[e] Supergiants

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
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, 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

Massive stars in the giant molecular cloud G23.3−0.3 and W41 [PDF]

, 2014
Context. Young massive stars and stellar clusters continuously form in the Galactic disk, generating new Hii regions within their natal giant molecular clouds and subsequently enriching the interstellar medium via their winds and supernovae.Aims. Massive
Aharonian, Albert, Alvarez, Alves, Apellániz, Ben Davies, Bibby, Bica, Blommaert, Blum, Blum, Borissova, Brand, Brogan, Bronfman, Brunthaler, Carpenter, Carter, Christine Trombley, Churchwell, Clark, Clark, Clark, Clark, Clark, Crowther, Crowther, Dame, Dame, Davies, Davies, Davies, Davies, de Wit, Donald F. Figer, Drimmel, Egan, Ekström, Elias, Epchtein, Fariña, Figer, Figer, Figer, Figer, Figer, Garcia-Lario, Gogus, Grebel, Green, Groh, Gvaramadze, Göğüş, Habing, Hanson, Hanson, Helfand, Humphreys, Humphreys, Indebetouw, J. Simon Clark, John W. MacKenty, Johnson, Kargaltsev, Karl M. Menten, Kleinmann, Koornneef, Kuchar, Lada, Leahy, Lejeune, Levesque, Lucas, Maria Messineo, Martins, Martins, Martins, Mauerhan, Mercer, Messineo, Messineo, Messineo, Messineo, Messineo, Misanovic, Mori, Morris, Mukherjee, Muno, Nakashima, Nishiyama, Oliva, Price, R. Michael Rich, Rayner, Reid, Reunanen, Rieke, Rolf-Peter Kudritzki, Roman-Lopes, Roman-Lopes, Roman-Lopes, Rousselot, Salpeter, Shara, Skiff, Smith, Soto, Stead, Storey, Sylvester, Thackeray, Tian, Valentin D. Ivanov, Vollmann, Walborn, Walborn, Wegner, White, Whitney, Wright, Zacharias   +121 more
core   +2 more sources

A Brief Galactic Winds and the Role Played by Massive Stars [PDF]

, 2017
Galactic winds from star-forming galaxies play at key role in the evolution of galaxies and the inter-galactic medium. They transport metals out of galaxies, chemically-enriching the inter-galactic medium and modifying the chemical evolution of galaxies.
T. Heckman, T. Thompson
semanticscholar   +1 more source

Signatures of Mass Segregation from Competitive Accretion and Monolithic Collapse

The Astrophysical Journal
The 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, Emily J. Pinson, Hayley L. Alcock, James E. Dale   +3 more
doaj   +1 more source