Results 1 to 10 of about 1,039,739 (296)

THE FIRST STARS

Acta Polytechnica, 2013
Pop III stars are the key to the character of primeval galaxies, the first heavy elements, the onset of cosmological reionization, and the seeds of supermassive black holes.
Daniel J. Whalen
doaj   +5 more sources

The First Stars

Annual Review of Astronomy and Astrophysics, 2003
We review recent theoretical results on the formation of the first stars in the universe, and emphasize related open questions. In particular, we discuss the initial conditions for Population III star formation, as given by variants of the cold dark ...
Balsara D, Bate MR, Cayrel R, Cooray A, Galli D, McDowell MRC, Motte F, Ober WW, Puy D, Rees MJ, Schneider R, Schwarzschild M, Sokasian A, Whalen D, Yoneyama T, Yoshii Y   +15 more
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Formation of the First Stars and Quasars [PDF]

Advances in Space Research, 1998
We review observable signatures of the first generation of stars and low-luminosity quasars, including the metal enrichment, radiation background, and dust opacity/emission that they produce.
Eisenstein, Elvis, Fixsen, Gunn, Haehnelt, Haiman, Haiman, Haiman, Haiman, Haiman, Haiman, Haiman, Hu, Kormendy, Kurucz, Loeb, Loeb, Mather, Mathis, Miller, Ostriker, Pei, Press, Press, Sasaki, Scalo, Schaller, Songaila, Songaila, Tytler, Z Haiman, Zaldarriaga   +31 more
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From the first stars to the first black holes [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
The growth of the first super massive black holes (SMBHs) at z > 6 is still a major challenge for theoretical models. If it starts from black hole (BH) remnants of Population III stars (light seeds with mass ~ 100 Msun) it requires super-Eddington ...
Omukai, Kazuyuki, Schneider, Raffaella, Valiante, Rosa, Volonteri, Marta   +3 more
core   +8 more sources

Observational Signatures of the First Stars [PDF]

, 2001
At present, there are several feasible observational probes of the first stars in the universe. Here, we examine the constraints on early stellar activity from the metallicity of the high-redshift Ly-$\alpha$ clouds, from the effects of stellar ionizing ...
Truran, James W., Venkatesan, Aparna
core   +3 more sources

Rotation Speed of the First Stars

, 2010
We estimate the rotation speed of Population III (Pop III) stars within a minihalo at z ~ 20 using a smoothed particle hydrodynamics (SPH) simulation, beginning from cosmological initial conditions.
Abel, Abraham Loeb, Alvarez, Athena Stacy, Balbus, Barkana, Bate, Bate, Belczynski, Bodenheimer, Boss, Boss, Bromm, Bromm, Bromm, Bromm, Bromm, Bromm, Bromm, Bromm, Bromm, Caselli, Cesaroni, Ciardi, Clark, Clark, Duquennoy, Ekström, Ekström, Frebel, Frebel, Fryer, Glover, Goodman, Gou, Greif, Greif, Greif, Haiman, Heger, Heger, Heger, Huang, Izzard, Jappsen, Johnson, Kitayama, Koenigl, Kratter, Kraus, Krumholz, Kudritzki, Lee, Lee, Loeb, Machida, Madau, Maeder, Maeder, Maki, Martel, Matt, Mori, Naoz, Narayan, Nomoto, Norman, Nugis, Omukai, Omukai, Papaloizou, Petrovic, Salvaterra, Schleicher, Schneider, Shu, Silk, Simon, Sokasian, Spitzer, Springel, Springel, Spruit, Stacy, Stahler, Suwa, Tan, Tan, Tanvir, Tegmark, Tornatore, Turk, Ulrich, Volker Bromm, Wada, Whalen, Wise, Wolff, Woosley, Woosley, Woosley, Xu, Yoon, Yoshida, Yoshida, Zhang   +105 more
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The 21cm Signature of the First Stars [PDF]

The Astrophysical Journal, 2006
We predict the 21-cm signature of the first metal-free stars. The soft X-rays emitted by these stars penetrate the atomic medium around their host halos, generating Lyman alpha photons that couple the spin and kinetic temperatures. These creates a region
Barkana R., Ciardi B., Hummer D. G., Jordi Miralda‐Escudé, Mo H. J., Reed D. S., Storey P. J., Xuelei Chen   +7 more
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Star Formation Under Cosmological Conditions [PDF]

EPJ Web of Conferences, 2020
The first stars have transformed the universe from the infrared background to the light. Thereby, this so called “dark age” ended by re-ionization through the ultraviolet light of the first stars.
El Eid Mounib F., Saad Cynthia
doaj   +1 more source

First stars [PDF]

Astronomy & Astrophysics, 2013
Detailed abundances of the elements produced by r-process nucleosynthesis in various circumstances are our best observational clues to their origin, since the site(s) of r-element production is(are) still not known with certainty. A small fraction of extremely metal-poor (EMP) stars exhibit excesses of heavy neutron-capture elements produced in the r ...
Siquerira Mello Jr., C., Spite, M., Barbuy, B., Spite, F., Caffau, E., Hill, V., Wanajo, S., Primas, F., Plez, B., Cayrel, R., Nordström, Birgitta, Andersen, Johannes, Sneden, C., Beers, T.C., Bonifacio, P., Francois, P., Molaro, P.   +16 more
openaire   +3 more sources

First Stars XIV. Sulfur abundances in extremely metal-poor (EMP) stars [PDF]

, 2010
Sulfur is important: the site of its formation is uncertain, and at very low metallicity the trend of [S/Fe] against [Fe/H] is controversial. Below [Fe/H]=-2.0, [S/Fe] remains constant or it decreases with [Fe/H], depending on the author and the ...
Alonso, Andrievsky, Andrievsky, Andrievsky, Andrievsky, B. Barbuy, B. Nordström, B. Plez, Ballester, Bonifacio, Bonifacio, Caffau, Caffau, Caffau, Caffau, Castelli, Cayrel, Centurión, Depagne, Dessauges-Zavadsky, Dessauges-Zavadsky, Dessauges-Zavadsky, E. Caffau, E. Depagne, Ellison, F. Primas, F. Spite, François, François, Frebel, Frebel, Gehren, H.-G. Ludwig, Heger, Hill, Israelian, J. Andersen, Kobayashi, Korotin, Korotin, Korotin, Korotin, Kurucz, Ledoux, Ledoux, Lodders, Lopez, Lopez, M. Spite, McWilliam, Molaro, Nakamura, Nissen, Nissen, Norris, Noterdaeme, P. Bonifacio, P. François, P. Molaro, Pettini, Pettini, Prochaska, R. Cayrel, Ramaty, Ryde, Ryde, S. A. Korotin, S. M. Andrievsky, Shigeyama, Srianand, T. C. Beers, Takada-Hidai, Takeda, V. Hill, Venn, Woosley, Zhang   +76 more
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