Готові списки джерел за темами / Very massive stars

Добірка наукової літератури з теми "Very massive stars"

Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "Very massive stars"

1

Yusof, Norhasliza. "Wolf-Rayet stars from Very Massive Stars." Proceedings of the International Astronomical Union 9, S307 (June 2014): 152–53. http://dx.doi.org/10.1017/s1743921314006632.

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AbstractMany studies focused on very massive stars (VMS) within the framework of Pop. III stars, because this is where they were thought to be abundant. In this work, we focus on the evolution of VMS in the local universe following the discovery of VMS in the R136 cluster in the Large Magellanic Cloud (LMC). We computed grids of VMS evolutionary tracks in the range 120–500 M⊙ with solar, LMC and Small Magellanic Cloud metallicities. All models end their lives as Wolf-Rayet (WR) stars of the WC (or WO) type. We discuss the evolution and fate of VMS around solar metallicity with particular focus on the WR phase. For example, we show that a distinctive feature that may be used to disentangle Wolf-Rayet stars originating from VMS from those originating from lower initial masses is the enhanced abundances of Ne and Mg at the surface of WC stars.
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2

Heydari-Malayeri, M. "Multiplicity of Very Massive Stars." Symposium - International Astronomical Union 143 (1991): 645–46. http://dx.doi.org/10.1017/s0074180900046064.

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Are there very massive stars (VMSs) of mass greater than 100 M⊙? This question constitutes one of the fundamental problems of astrophysics. We present observational evidence against the existence of such stars in the Magellanic Clouds. The multiplicity of VMSs has several important consequences for astrophysics. If VMSs do not exist we need to revise our ideas about the formation and evolution of stars.
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3

Hirschi, R. "Very low-metallicity massive stars:." Astronomy & Astrophysics 461, no. 2 (October 9, 2006): 571–83. http://dx.doi.org/10.1051/0004-6361:20065356.

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4

Jørgen, Knut, and Røed Ødegaard. "Instabilities in Very Massive Stars." International Astronomical Union Colloquium 176 (2000): 391–92. http://dx.doi.org/10.1017/s0252921100058176.

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AbstractDetailed dynamical models and nucleosynthesis yields of very massive stars from early pre-MS through very late stages have been computed. The recent reduction of mass loss rates for the WR stages can have important consequences for both the evolution, surface composition and stability. Depending on mass and metallicity, in the present models instabilities occur during the accretion phase (pre-ZAMS), LBV stage and very late stages (WC).
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5

Chené, André-Nicolas, Olivier Schnurr, Paul A. Crowther, Eduardo F. Lajus, and Anthony F. J. Moffat. "Very massive binaries in R 136." Proceedings of the International Astronomical Union 6, S272 (July 2010): 497–98. http://dx.doi.org/10.1017/s174392131101115x.

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AbstractAs recent observations have shown, luminous, hydrogen-rich WN5-7h stars (and their somewhat less extreme cousins, O3f/WN6 stars) are the most massive main-sequence stars known. However, not nearly enough very massive stars have been reliably weighed to yield a clear picture of the upper initial-mass function (IMF). We therefore have carried out repeated high-quality spectroscopy of four new O3f/WN6 and WN5-7h binaries in R136 in the LMC with GMOS at Gemini-South, to derive Keplerian orbits for both components, respectively, and thus to directly determine their masses. We also monitored binary candidates and other, previously unsurveyed stars, to increase the number of very massive stars that can be directly weighed.
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6

Oh, Seungkyung, and Pavel Kroupa. "Very massive stars in not so massive clusters." Monthly Notices of the Royal Astronomical Society 481, no. 1 (August 18, 2018): 153–63. http://dx.doi.org/10.1093/mnras/sty2245.

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7

Belkus, H., J. Van Bever, and D. Vanbeveren. "The Evolution of Very Massive Stars." Astrophysical Journal 659, no. 2 (April 20, 2007): 1576–81. http://dx.doi.org/10.1086/512181.

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8

Davidson, Kris. "Giant eruptions of very massive stars." Journal of Physics: Conference Series 728 (July 2016): 022008. http://dx.doi.org/10.1088/1742-6596/728/2/022008.

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9

Bomans, Dominik J., and Kerstin Weis. "Massive variable stars at very low metallicity?" Proceedings of the International Astronomical Union 6, S272 (July 2010): 265–70. http://dx.doi.org/10.1017/s1743921311010519.

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AbstractObservational contraints on the evolution and instabilities of massive stars at very low metallicities are limited. Most of the information come from HST observations of one target, I Zw 18. Recent distance estimates of I Zw 18 put it at 17 Mpc, moving detailed studies of single stars clearly beyond the range of current ground based telescopes. Since massive stars with metallcities of 1/10 of solar and below are our best proxies for massive stars in (proto-) galaxies around the time of reionization, finding them and studying their evolution and instabilities is of premium importance for our understanding of galaxy formation, feedback, and the IGM reionization. Here we present pilot study results of variable stars in two more nearby extremely low metallicity galaxies, UGC 5340 and UGCA 292, and comment on the possibilities of more detailed studies of variable massive stars with new ground-based instrumentation.
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10

Dijkstra, M., and J. S. B. Wyithe. "Very massive stars in high-redshift galaxies." Monthly Notices of the Royal Astronomical Society 379, no. 4 (August 21, 2007): 1589–98. http://dx.doi.org/10.1111/j.1365-2966.2007.12039.x.

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Дисертації з теми "Very massive stars"

1

Uchida, Haruki. "Black Hole Formation, Explosion and Gravitational Wave Emission from Rapidly Rotating Very Massive Stars." Kyoto University, 2019. http://hdl.handle.net/2433/242595.

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2

Huenemoerder, David, Lidia M. Oskinova, Richard Ignace, Wolf-Rainer Hamann, Nobert S. Schulz, Hilding Neilson, and Tomer Shenar. "A Deep X-ray Look at a Very Massive Star: HETGS Spectroscopy of the Blue Hypergiant Cyg OB2-12 (HIP 101364)." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/2698.

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We have obtained a Chandra/HETGS spectrum of one of the most massive and luminous stars in the Galaxy: the blue hypergiant Cyg OB2-12 (HIP 101364, spectral type B3 Ia+). This is the first measurement at high resolution of X-ray spectral lines in a blue hypergiant and allows comparison of X-ray properties between massive stars at different but related evolutionary stages: O-type supergiants, luminous blue variables, Wolf-Rayet stars, and blue hypergiants stars. The new data provide a look at how the most massive stars shed mass during their pre-supernova evolution. We find that In Cyg OB2-12 the resolved Si and Mg lines are broadened by about 1000 km/s (FWHM). The lines, however, do not show appreciable centroid shifts (/s), which would be much larger for canonical moderately thick winds (~500 km/s). The He-like Mg XI lines show evidence of photo-excitation, implying a wind origin close to the UV-bright photosphere. The spectrum also indicates relatively high temperature plasma, up to 22 MK (1.9 keV), showing significant continuum and emission lines below 5A (above 2.5 keV). Hence, at first glance, the spectrum resembles neither an O-star thick wind, nor a magnetically confined (narrow-line) plasma. We will present more detailed wind models using both X-ray and UV spectra to constrain fundamental physical parameters of this star.
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3

Rahman, Ninoy [Verfasser], Hans-Thomas [Akademischer Betreuer] Janka, Alejandro [Gutachter] Ibarra, and Hans-Thomas [Gutachter] Janka. "General Relativistic Multidimensional Flux-Limited Diffusion Scheme for Neutrino Transport and its Application to Core-Collapse Supernova Simulations of Very Massive Stars / Ninoy Rahman ; Gutachter: Alejandro Ibarra, Hans-Thomas Janka ; Betreuer: Hans-Thomas Janka." München : Universitätsbibliothek der TU München, 2019. http://d-nb.info/1204199930/34.

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4

Vasyunina, Tatiana [Verfasser]. "Very early stages of massive stars / put forward by Tatiana Vasyunina." 2010. http://d-nb.info/1009637967/34.

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5

Hoffmeister, Vera H. [Verfasser]. "The formation of massive stars / von Vera H. Hoffmeister." 2008. http://d-nb.info/995515352/34.

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Книги з теми "Very massive stars"

1

Vink, Jorick S., ed. Very Massive Stars in the Local Universe. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-09596-7.

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2

Vink, Jorick S. Very Massive Stars in the Local Universe. Springer, 2014.

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3

Vink, Jorick S. Very Massive Stars in the Local Universe. Springer, 2016.

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4

Vink, Jorick S. Very Massive Stars in the Local Universe. Springer, 2014.

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Частини книг з теми "Very massive stars"

1

Heydari-Malayeri, M. "Multiplicity of Very Massive Stars." In Wolf-Rayet Stars and Interrelations with other Massive Stars in Galaxies, 645–46. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3306-7_129.

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2

Martins, Fabrice. "Empirical Properties of Very Massive Stars." In Very Massive Stars in the Local Universe, 9–42. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09596-7_2.

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3

Krumholz, Mark R. "The Formation of Very Massive Stars." In Very Massive Stars in the Local Universe, 43–75. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09596-7_3.

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4

Woosley, Stan E., and Alexander Heger. "The Deaths of Very Massive Stars." In Very Massive Stars in the Local Universe, 199–225. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09596-7_7.

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5

Henning, Thomas, Randolf Klein, Ralf Launhardt, Katharina Schreyer, and Bringfried Stecklum. "Search for Very Young Massive Stars." In ISO Surveys of a Dusty Universe, 333–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45553-1_42.

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6

Vink, Jorick S. "Very Massive Stars in the Local Universe." In Very Massive Stars in the Local Universe, 1–8. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09596-7_1.

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7

Vink, Jorick S. "Mass-Loss Rates of Very Massive Stars." In Very Massive Stars in the Local Universe, 77–111. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09596-7_4.

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8

Hirschi, Raphael. "Evolution and Nucleosynthesis of Very Massive Stars." In Very Massive Stars in the Local Universe, 157–98. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09596-7_6.

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9

Hirschi, Raphael. "Very Massive and Supermassive Stars: Evolution and Fate." In Handbook of Supernovae, 1–34. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-20794-0_120-1.

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10

Hirschi, Raphael. "Very Massive and Supermassive Stars: Evolution and Fate." In Handbook of Supernovae, 567–600. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-21846-5_120.

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Тези доповідей конференцій з теми "Very massive stars"

1

Ekström, S., G. Meynet, and A. Maeder. "Can Very Massive Stars Avoid Pair‐Instability Supernovae?" In FIRST STARS III: First Stars II Conference. American Institute of Physics, 2008. http://dx.doi.org/10.1063/1.2905547.

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2

Ohkubo, Takuya, Hideyuki Umeda, Keiichi Maeda, Ken'ichi Nomoto, Tmoharu Suzuki, Sachiko Tsuruta, and Martin J Rees. "Evolution of Core‐Collapse Very Massive Population III Stars." In FIRST STARS III: First Stars II Conference. American Institute of Physics, 2008. http://dx.doi.org/10.1063/1.2905553.

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3

Klapp, Jaime. "Very Massive Stars and their Cosmological Consequences." In GRAVITATION AND COSMOLOGY: 2nd Mexican Meeting on Mathematical and Experimental Physics. AIP, 2005. http://dx.doi.org/10.1063/1.1900515.

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4

Yusof, Norhasliza, Hasan Abu Kassim, Raphael Hirschi, Paul Crowther, Olivier Schnurr, Richard Parker, and Simon Goodwin. "Life and Death of Very Massive Stars." In 11th Symposium on Nuclei in the Cosmos. Trieste, Italy: Sissa Medialab, 2011. http://dx.doi.org/10.22323/1.100.0136.

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5

Yoon, S. ‐C, M. Cantiello, and N. Langer. "Evolution of Massive Stars at Very Low Metallicity, Including Rotation and Binary Interactions." In FIRST STARS III: First Stars II Conference. American Institute of Physics, 2008. http://dx.doi.org/10.1063/1.2905548.

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6

Fabrika, S., A. Kostenkov, K. Atapin, Yu Solovyeva, A. Kniazev, O. Sholukhova, and A. Sarkisyan. "Very Massive Stars and Intermediate Mass Black Holes." In Groud-Based Astronomy in Russia. 21st Century. Специальная астрофизическая обсерватория РАН, 2020. http://dx.doi.org/10.26119/978-5-6045062-0-2_2020_247.

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7

Yoshida, Takashi, Shinpei Okita, and Hideyuki Umeda. "Evolution of Very Massive Stars and Type Ic Supernovae." In XII International Symposium on Nuclei in the Cosmos. Trieste, Italy: Sissa Medialab, 2013. http://dx.doi.org/10.22323/1.146.0062.

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8

Yoshida, Takashi, Shinpei Okita, and Hideyuki Umeda. "Type Ic core-collapse supernovae evolved from very massive stars." In ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2013: Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG12). AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4874083.

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9

Yoshida, Takashi. "TYPE IC CORE-COLLAPSE SUPERNOVAE EVOLVED FROM VERY MASSIVE STARS." In XIII Nuclei in the Cosmos. Trieste, Italy: Sissa Medialab, 2015. http://dx.doi.org/10.22323/1.204.0177.

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10

Hirschi, Raphael. "Rotating massive stars @ very low Z: high C & N production." In ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology. AIP, 2006. http://dx.doi.org/10.1063/1.2234385.

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