Results 91 to 100 of about 1,197,942 (368)

Hot Stars in Stellar Populations of Galaxies

Galaxies
Star-forming galaxies are hosts of dominant populations of recently formed, hot, massive stars, which give rise to conspicuous stellar spectral features and provide the ionizing fluxes. Strong outflows of these stars shape their properties.
Claus Leitherer
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

Southern Massive Stars at High Angular Resolution: Observational Campaign and Companion Detection [PDF]

, 2014
Multiplicity is one of the most fundamental observable properties of massive O-type stars and offers a promising way to discriminate between massive star formation theories.
Absil, O., Berger, J. -P., Bouquin, J. -B. Le, de Koter, A., Duvert, G., Gauchet, L., Kratter, K., Lacour, S., Norris, B., Olofsson, J., Pickel, D., Sana, H., Schnurr, O., Zinnecker, H., Zins, G.   +14 more
core   +4 more sources

Uncertainties in s-process nucleosynthesis in massive stars determined by Monte Carlo variations [PDF]

, 2017
The s-process in massive stars produces the weak component of the s-process (nuclei up to A ∼ 90), in amounts that match solar abundances. For heavier isotopes, such as barium, production through neutron capture is significantly enhanced in very metal ...
N. Nishimura, R. Hirschi, T. Rauscher, A. Murphy, G. Cescutti   +4 more
semanticscholar   +1 more source

An Adaptive Management Model for Brown Bears in Hokkaido: Based on Total Population and the Number of Nuisance Bears

Population Ecology, EarlyView.
Bear management changes management actions according to the horizontal axis of the population size and the vertical axis of the number of nuisance bears. Aiming for the target population size of Ntar, Actions I and II protect the bears, and Action IV reduces the population.
Hiroyuki Matsuda, Akira Maki, Tsutomu Mano, Hifumi Tsuruga, Hino Takafumi, Shinichi Horino   +5 more
wiley   +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

Critical Metallicity of Cool Supergiant Formation. I. Effects on Stellar-mass Loss and Feedback

The Astrophysical Journal, 2023
This paper systematically studies the relation between metallicity and mass loss of massive stars. We perform one-dimensional stellar evolution simulations and build a grid of ∼2000 models with initial masses ranging between 11 and 60 M _⊙ and absolute ...
Po-Sheng Ou, Ke-Jung Chen, You-Hua Chu, Sung-Han Tsai   +3 more
doaj   +1 more source

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.
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

Magnetic massive stars as progenitors of ‘heavy’ stellar-mass black holes [PDF]

, 2016
The groundbreaking detection of gravitational waves produced by the inspiralling and coalescence of the black hole (BH) binary GW150914 confirms the existence of 'heavy' stellar-mass BHs with masses >25 M-circle dot.
V. Petit, Z. Keszthelyi, Z. Keszthelyi, R. Macinnis, D. Cohen, R. Townsend, G. Wade, S. L. Thomas, S. Owocki, J. Puls, A. ud-Doula   +10 more
semanticscholar   +1 more source