Bibliografie tematiche / Galaxies primitives

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Letteratura scientifica selezionata sul tema "Galaxies primitives"

Autore: Grafiati

Pubblicato: 21 settembre 2024

Ultima modifica: 19 luglio 2025

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Articoli di riviste sul tema "Galaxies primitives"

Heap, Sara R., I. Hubeny, J. C. Bouret, T. Lanz, and J. Brinchmann. "Properties of Primitive Galaxies." Proceedings of the International Astronomical Union 18, S361 (2022): 485–89. http://dx.doi.org/10.1017/s1743921322003246.

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AbstractWe report on a study of 9 nearby primitive galaxies observed by Hubble’s COS far-UV spectrograph that can serve as templates of high-z galaxies to be observed by JWST. By “primitive galaxies,” we mean galaxies having a low stellar mass, and low gas metallicity, , whether they are local or at high redshift. We find that far-UV spectra of these galaxies show evidence of hard radiation, including X-rays. Following Thuan et al. (2004), we identify these galaxies as massive X-ray binaries containing a massive accreting stellar black hole. We further find that the lower the metallicity, the

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Thomsen, D. E. "Galaxies in a Primitive State?" Science News 133, no. 4 (1988): 52. http://dx.doi.org/10.2307/3972612.

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Finkelstein, Steven L., James E. Rhoads, Sangeeta Malhotra, and Norman Grogin. "LYMAN ALPHA GALAXIES: PRIMITIVE, DUSTY, OR EVOLVED?" Astrophysical Journal 691, no. 1 (2009): 465–81. http://dx.doi.org/10.1088/0004-637x/691/1/465.

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Heap, Sara R. "What can the UV SED tell us about primitive galaxies?" Proceedings of the International Astronomical Union 7, S284 (2011): 49–52. http://dx.doi.org/10.1017/s174392131200871x.

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Fraix-Burnet, Didier, Mauro D’Onofrio, and Paola Marziani. "Maximum parsimony analysis of the effect of the environment on the evolution of galaxies." Astronomy & Astrophysics 630 (September 23, 2019): A63. http://dx.doi.org/10.1051/0004-6361/201935604.

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Context. Galaxy evolution and the effect of the environment are most often studied using scaling relations or regression analyses around a given property. However, these approaches do not take into account the complexity of the physics of the galaxies and their diversity. Aims. We here investigate the effect of the cluster environment on the evolution of galaxies through multivariate, unsupervised classification and phylogenetic analyses applied to two relatively large samples from the Wide-field Nearby Galaxy-cluster Survey (WINGS), one of cluster members and one of field galaxies (2624 and 1

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Chen, Ke-Jung, Ching-Yao Tang, Daniel J. Whalen, et al. "How Population III Supernovae Determined the Properties of the First Galaxies." Astrophysical Journal 964, no. 1 (2024): 91. http://dx.doi.org/10.3847/1538-4357/ad2684.

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Abstract Massive Population III stars can die as energetic supernovae that enrich the early Universe with metals and determine the properties of the first galaxies. With masses of about 109 M ⊙ at z ≳ 10, these galaxies are believed to be the ancestors of the Milky Way. This paper investigates the impact of Population III supernova remnants (SNRs) from both Salpeter-like and top-heavy initial mass functions (IMFs) on the formation of first galaxies with high-resolution radiation-hydrodynamical simulations with the ENZO code. Our findings indicate that SNRs from a top-heavy Population III IMF p

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Heap, Sara. "Role of massive stars in the evolution of primitive galaxies." Proceedings of the International Astronomical Union 10, H16 (2012): 370. http://dx.doi.org/10.1017/s1743921314011429.

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AbstractAn important factor controlling galaxy evolution is feedback from massive stars. It is believed that the nature and intensity of stellar feedback changes as a function of galaxy mass and metallicity. At low mass and metallicity, feedback from massive stars is mainly in the form of photoionizing radiation. At higher mass and metallicity, it is in stellar winds. I Zw 18 is a local blue, compact dwarf galaxy that meets the requirements for a primitive galaxy: low halo mass <109M⊙, strong photoionizing radiation, no galactic outflow, and very low metallicity, log(O/H)+12=7.2. We will de

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Guimaraes, Eduardo S. "The Lunar Problem is The Barrier of The Future Time of The Earth." JOURNAL OF ADVANCES IN PHYSICS 14, no. 3 (2018): 5873–916. http://dx.doi.org/10.24297/jap.v14i3.7802.

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This article "The lunar problem is the barrier of the future time of the Earth" is a logical and rational analysis of the formation of the nuclear universe with galaxies, stars, the Sun star, the system of planets and the moons, and arrives at new original and inedited conclusions.  The Big Bang of the primitive universe is a sequence programmed by the nature of thermonuclear super explosions in sidereal space. These thermonuclear super explosions swept nuclear sidereal space generating the large mass islands of galaxies like the Milky Way. The Milky Way was the first g

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Pattery, George. "Building New Humanity through Faith:Republic Day Message 2019." AUC: Asian Journal of Religious Studies Mar-June 2019, no. 64/2-3 (2019): 63–67. https://doi.org/10.5281/zenodo.4274728.

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If I recall rightly, in 1974 or so, on Gandhi Jayanthi day, late Fr. Samuel Rayan in his homily in this very chapel said: Bapuji (Gandhi) and Ambedkar are symbols of new humanity. On hindsight today we could also say, Fr. Sam was one of them, showing traits of a new humanity. Describing the evolutionary progression, Scientist Philip Clayton wrote: “Once there was no universe and then, after the Big Bang, there was an exploding world of stars and galaxies. Once the earth was unpopulated and later it was teeming with primitive life forms. Once there were apes living in trees and then there

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Bolatto, Alberto D., Adam K. Leroy, Erik Rosolowsky, Fabian Walter, and Leo Blitz. "The Resolved Properties of Extragalactic Giant Molecular Clouds." Proceedings of the International Astronomical Union 4, S255 (2008): 274–77. http://dx.doi.org/10.1017/s1743921308024939.

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AbstractGiant molecular clouds (GMCs) are the major reservoirs of molecular gas in galaxies, and the starting point for star formation. As such, their properties play a key role in setting the initial conditions for the formation of stars. We present a comprehensive combined inteferometric/single-dish study of the resolved GMC properties in a number of extragalactic systems, including both normal and dwarf galaxies. We find that the extragalactic GMC properties measured across a wide range of environments, characterized by the Larson relations, are to first order remarkably compatible with tho

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Più fonti

Tesi sul tema "Galaxies primitives"

Lecroq, Marie. "Modelling primeval galaxies in the JWST era." Electronic Thesis or Diss., Sorbonne université, 2024. http://www.theses.fr/2024SORUS154.

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Le télescope spatial James Webb, lancé en décembre 2021, est considéré comme l'observatoire majeur de la décennie en cours. S'il doit explorer toutes les phases de l'histoire cosmique, l'un de ses principaux buts scientifiques est de dévoiler les premières étoiles et galaxies formées dans l'obscurité de l'Univers primitif, qui ont conduit à sa réionisation avant d'évoluer vers la population de galaxies observable aujourd'hui. Pour interpréter les données spectroscopiques recueillies par le JWST, il est nécessaire de développer des modèles qui contraignent efficacement la physique de l'émission

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Capitoli di libri sul tema "Galaxies primitives"

"Cosmogony Myths and Primitive Notions." In The Distribution of the Galaxies. Cambridge University Press, 1999. http://dx.doi.org/10.1017/cbo9780511549526.003.

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Atti di convegni sul tema "Galaxies primitives"

Hayakawa, T., M. Kusakabe, H. Ko, et al. "Neutrino process with primitive meteorites and high power laser." In 14TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES (OMEG 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5030825.

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