Results 101 to 110 of about 1,197,942 (368)

The Slow Merger of Massive Stars [PDF]

, 2006
We study the complete merger of two massive stars inside a common envelope and the subsequent evolution of the merger product, a rapidly rotating massive supergiant. Three qualitatively different types of mergers have been identified and investigated in detail, and the post-merger evolution has been followed to the immediate presupernova stage.
Ivanova, N, Podsiadlowski, P
openaire   +4 more sources

NuGrid: s process in massive stars [PDF]

Proceedings of 10th Symposium on Nuclei in the Cosmos — PoS(NIC X), 2009
The s-process production in massive stars at very low metallicities is expected to be negligible due to the low abundance of the neutron source 22Ne, to primary neutron poisons and decreasing iron seed abundances. However, recent models of massive stars including the effects of rotation show that a strong production of 22Ne is possible in the helium ...
Michael Bennett, Georgios Magkotsios, Chris L. Fryer, Falk Herwig, Friedrich-Karl Thielemann, Aimee Hungerford, Raphael Hirschi, Steven Diehl, Patrick A. Young, Gabriel Rockefeller, Marco Pignatari, Urs Frischknecht, Francis Timmes   +12 more
openaire   +3 more sources

FoxO1 signaling in B cell malignancies and its therapeutic targeting

FEBS Letters, EarlyView.
FoxO1 has context‐specific tumor suppressor or oncogenic character in myeloid and B cell malignancies. This includes tumor‐promoting properties such as stemness maintenance and DNA damage tolerance in acute leukemias, or regulation of cell proliferation and survival, or migration in mature B cell malignancies.
Krystof Hlavac, Petra Pavelkova, Laura Ondrisova, Marek Mraz   +3 more
wiley   +1 more source

Dust around Massive Stars Is Agnostic to Galactic Environment: New Insights from PHAT/BEAST

The Astrophysical Journal
Resolving the environments of massive stars is crucial for understanding their formation mechanisms and their impact on galaxy evolution. An important open question is whether massive stars found in diffuse regions outside spiral arms formed in situ or ...
Christina Willecke Lindberg, Claire E. Murray, Julianne J. Dalcanton, J. E. G. Peek, Karl D. Gordon   +4 more
doaj   +1 more source

Two step ejection of massive stars and the issue of their formation in isolation

, 2010
In this paper we investigate the combined effect of massive binary ejection from star clusters and a second acceleration of a massive star during a subsequent supernova explosion. We call this the "two-step-ejection" scenario.
Blaauw, Chevalier, Clarke, de Donder, de Wit, de Wit, Gies, Gvaramadze, Gvaramadze, Heggie, Hoffer, Hoogerwerf, Iben, Jan Pflamm-Altenburg, Kroupa, Lada, Leonard, Mikkola, Mikkola, Parker, Pavel Kroupa, Pflamm-Altenburg, Portegies Zwart, Poveda, Schilbach, Stone, Tauris, Zwicky   +27 more
core   +1 more source

Rejuvenation of stellar mergers and the origin of magnetic fields in massive stars [PDF]

, 2016
Approximately 10% of massive OBA main-sequence (MS) and pre-MS stars harbour strong, large-scale magnetic fields. At the same time there is a dearth of magnetic stars in close binaries.
F. Schneider, P. Podsiadlowski, N. Langer, N. Castro, L. Fossati   +4 more
semanticscholar   +1 more source

Quark deconfinement as a supernova explosion engine for massive blue supergiant stars [PDF]

Nature Astronomy, 2017
Blue supergiant stars develop into core-collapse supernovae—one of the most energetic outbursts in the Universe—when all nuclear burning fuel is exhausted in the stellar core.
T. Fischer, N. Bastian, Meng-Ru Wu, P. Baklanov, E. Sorokina, S. Blinnikov, S. Typel, T. Klähn, D. Blaschke   +8 more
semanticscholar   +1 more source

Profiling young massive stars [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractWe present the results of spectral energy distribution analysis for 162 of the 405 sources reported in the SIMBA survey of Hill et al. (2005). The fits reveal source specific parameters including: the luminosity, mass, temperature, H2 number density, the surface density and the luminosity-to-mass ratio.
Vincent Minier, Michael G. Burton, T. Hill, Maria Cunningham   +3 more
openaire   +3 more sources

The epithelial barrier theory proposes a comprehensive explanation for the origins of allergic and other chronic noncommunicable diseases

FEBS Letters, EarlyView.
Exposure to common noxious agents (1), including allergens, pollutants, and micro‐nanoplastics, can cause epithelial barrier damage (2) in our body's protective linings. This may trigger an immune response to our microbiome (3). The epithelial barrier theory explains how this process can lead to chronic noncommunicable diseases (4) affecting organs ...
Can Zeyneloglu, Huseyn Babayev, Ismail Ogulur, Sena Ardicli, Yagiz Pat, Duygu Yazici, Bingjie Zhao, Lihong Chang, Xiaoqing Liu, Paolo D'Avino, Manru Li, Ceren Biçer, Fatma Hacer Kurtoğlu Babayev, Raja Dhir, Kari C. Nadeau, Marie‐Charlotte Brüggen, Mubeccel Akdis, Cezmi A. Akdis   +17 more
wiley   +1 more source

Novel and unscrutinized immune entities of the zebrafish gut

FEBS Letters, EarlyView.
Understudied cells of the zebrafish immune system include bona fide immune cells and epithelial (‐derived) cells with immune functions. Research focusing on zebrafish cells which demonstrate similarities to mammalian immune cell counterparts may help us understand the pathologies in which they are implicated. Currently available and advanced tools make
Audrey Inge Schytz Andersen‐Civil, Marine Mantel, Julia Soh, Serge Mostowy, Sylvia Brugman, Gilles Claude Vanwalleghem   +5 more
wiley   +1 more source