Results 21 to 30 of about 320,218 (320)

Early-forming Massive Stars Suppress Star Formation and Hierarchical Cluster Assembly

The Astrophysical Journal, 2023
Feedback from massive stars plays an important role in the formation of star clusters. Whether a very massive star is born early or late in the cluster formation timeline has profound implications for the star cluster formation and assembly processes. We
Sean C. Lewis, Stephen L. W. McMillan, Mordecai-Mark Mac Low, Claude Cournoyer-Cloutier, Brooke Polak, Martijn J. C. Wilhelm, Aaron Tran, Alison Sills, Simon Portegies Zwart, Ralf S. Klessen, Joshua E. Wall   +10 more
doaj   +1 more source

Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon Condensations

Advances in Astronomy, 2020
Nucleonic direct Urca processes and cooling of the massive neutron stars are studied by considering antikaon condensations. Calculations are performed in the relativistic mean field and isothermal interior approximations.
Yan Xu, Wen Bo Ding, Cheng Zhi Liu, J. L. Han   +3 more
doaj   +1 more source

Very massive runaway stars from three-body encounters [PDF]

, 2010
Very massive stars preferentially reside in the cores of their parent clusters and form binary or multiple systems. We study the role of tight very massive binaries in the origin of the field population of very massive stars.
Aarseth, Aarseth, Alessia Gualandris, Blaauw, Blaauw, Boersma, Bonanos, Brandl, Brown, Clark, Clarke, Comerón, Conti, Danforth, de Wit, Eggleton, Eldridge, Evans, Evans, García, Gies, Gies, Gualandris, Gualandris, Gualandris, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Habets, Heber, Heggie, Hills, Hills, Hills, Hobbs, Hoogerwerf, Hut, Kiminki, Kobulnicky, Kobulnicky, Kroupa, Lada, Larson, Leonard, Leonard, Martins, Mason, Massey, McMillan, McMillan, Meixner, Mel'nik, Mermilliod, Meynet, Mikkola, Moeckel, Nota, Pflamm-Altenburg, Pinsonneault, Portegies Zwart, Poveda, Preibisch, Rauw, Reid, Repolust, Rousseau, Schaller, Schilbach, Schnurr, Schnurr, Schnurr, Stone, Stone, Tauris, van Albada, van Buren, van Leeuwen, Vanbeveren, Vasilii V. Gvaramadze, Walborn, Woosley, Zinnecker   +88 more
core   +1 more source

A Catalog of New Slowly Pulsating B-type Stars

The Astrophysical Journal Supplement Series, 2023
This paper reports the discovery of new slowly pulsating B-type stars. Based on the photometric, spectral, and astrometric data of the TESS, LAMOST, and Gaia surveys, we have found 286 new slowly pulsating B-type (SPB) stars and 21 candidates.
Xiang-dong Shi, Sheng-bang Qian, Li-ying Zhu, Lin-jia Li   +3 more
doaj   +1 more source

First HARPSpol discoveries of magnetic fields in massive stars [PDF]

, 2011
In the framework of the Magnetism in Massive Stars (MiMeS) project, a HARPSpol Large Program at the 3.6m-ESO telescope has recently started to collect high-resolution spectropolarimetric data of a large number of Southern massive OB stars in the field of
Alecian, Alecian, Ausseloos, Ausseloos, B. de Batz, Borra, Briquet, Briquet, C. Neiner, Davis, Donati, E. Alecian, G. A. Wade, Grunhut, H. Henrichs, Hubeny, Hubeny, Hubrig, Hunger, J. H. Grunhut, J.-C. Bouret, Jaschek, Kharchenko, Kochukhov, M. Briquet, M. E. Oksala, M. Gagne, Mayor, McAlister, N. R. Walborn, O. Kochukhov, Piskunov, Piskunov, R. H. D. Townsend, Stibbs, T. Rivinius, Veto, W. Weiss, Y. Naze   +38 more
core   +5 more sources

Massive Stars and Their Supernovae [PDF]

, 2010
Massive stars and their supernovae are prominent sources of radioactive isotopes, the observations of which thus can help to improve our astrophysical models of those. Our understanding of stellar evolution and the final explosive endpoints such as supernovae or hypernovae or gamma-ray bursts relies on the combination of magneto-hydrodynamics, energy ...
Thielemann, F., Hirschi, R., Liebendörfer, M., Diehl, R.   +3 more
openaire   +3 more sources

Understanding the Death of Massive Stars Using an Astrophysical Transients Observatory

Frontiers in Astronomy and Space Sciences, 2018
The death of massive stars, manifested as gamma-ray bursts and core-collapse supernovae, critically influence how the universe formed and evolves. Despite their fundamental importance, our understanding of these enigmatic objects is severely limited.
Peter W. A. Roming, Eddie Baron, Amanda J. Bayless, Volker Bromm, Peter J. Brown, Michael W. Davis, Anastasia Fialkov, Brian Fleming, Kevin France, Chris L. Fryer, Thomas K. Greathouse, Jed J. Hancock, D. Andrew Howell, D. Andrew Howell, Andrew J. Levan, Abraham Loeb, Raffaella Margutti, Mark L. McConnell, Paul T. O'Brien, Julian P. Osborne, Daniel A. Perley, Eric M. Schlegel, Rhaana L. C. Starling, Nial R. Tanvir, Mark Tapley, Patrick A. Young, Bing Zhang   +26 more
doaj   +1 more source

Observations of magnetic fields in hot stars [PDF]

, 2010
The presence of magnetic fields at the surfaces of many massive stars has been suspected for decades, to explain the observed properties and activity of OB stars. However, very few genuine high-mass stars had been identified as magnetic before the advent
Aurière, Bagnulo, Bagnulo, Bychkov, Duez, Hubrig, Kochukhov, Kochukhov, Kochukhov, Landstreet, Landstreet, Maeder, Nazé, Neiner, Neiner, Piskunov, Véronique Petit   +16 more
core   +1 more source

Super-Massive Stars: Dense Star-Gas Systems [PDF]

, 2006
3 pages, 1 figure. Necessary files also uploaded. To appear in "Lighthouses of the Universe", Springer-Verlag series "ESO Astrophysics Symposia"
Amaro-Seoane, Pau, Spurzem, Rainer, Just, Andreas   +2 more
openaire   +2 more sources

High-velocity runaway stars from three-body encounters [PDF]

, 2009
We performed numerical simulations of dynamical encounters between hard massive binaries and a very massive star (VMS; formed through runaway mergers of ordinary stars in the dense core of a young massive star cluster), in order to explore the hypothesis
A. Gualandris, Blaauw, Gvaramadze, Heber, Poveda, S. Portegies Zwart, V. V. Gvaramadze, Yungelson   +7 more
core   +1 more source