Results 81 to 90 of about 3,026,820 (400)

The Abundance of S-Process Elements: Temporal and Spatial Trends from Open Cluster Observations

Universe, 2022
Spectroscopic observations of stars belonging to open clusters, with well-determined ages and distances, are a unique tool for constraining stellar evolution, nucleosynthesis, mixing processes, and, ultimately, Galactic chemical evolution.
Laura Magrini, Carlos Viscasillas Vázquez, Giada Casali, Martina Baratella, Valentina D’Orazi, Lorenzo Spina, Sofia Randich, Sergio Cristallo, Diego Vescovi   +8 more
doaj   +1 more source

On Stellar Structure and Evolution

, 2021
In this paper, an exposition has been provided on the structure and evolution of stars based on the major functionality on their initial mass. First, we deal with the role of the radiation pressure and its contribution in the overall equilibrium of the stellar stability, then we discuss about the formation of white dwarfs and Newtonian polytropes, then
openaire   +3 more sources

Stellar populations of ultraluminous infrared galaxies

, 2011
Ultraluminous infrared galaxies (ULIRGs) have several types according to dominance of starburst or AGN component. We made stellar population analysis for a sample of 160 ULIRGs to study the evolution of ULIRGs. We found that the dominance of intermediate-
Abazajian, Alongi, Balogh, Blanton, Bressan, Canalizo, Canalizo, Canalizo, Chung, Cid Fernandes, Colina, Dasyra, Downes, Fagotto, Genzel, Hopkins, Hou, J. L. Han, L. G. Hou, Lonsdale, M. Z. Kong, Meng, Moshir, Natali, Netzer, Salim, Schmitt, Schweitzer, Solomon, Soto, Springel, Surace, Surace, Surace, Tacconi, Veilleux, Veilleux, Xue-Bing Wu   +37 more
core   +1 more source

Synthetic photometry for M and K giants and stellar evolution: hydrostatic dust-free model atmospheres and chemical abundances [PDF]

, 2016
Based on a grid of hydrostatic spherical COMARCS models for cool stars, we have calculated observable properties of these objects, which will be mainly used in combination with stellar evolution tracks and population synthesis tools.
B. Aringer, L. Girardi, W. Nowotny, P. Marigo, A. Bressan   +4 more
semanticscholar   +1 more source

The dual nature of TDC – bridging dendritic and T cells in immunity

FEBS Letters, EarlyView.
TDC are hematopoietic cells combining dendritic and T cell features. They reach secondary lymphoid organs (SLOs) and peripheral organs (liver and lungs) after FLT3‐dependent development in the bone marrow and maturation in the thymus. TDC are activated and enriched in SLOs upon viral infection, suggesting that they might play unique immune roles, since
Maria Nelli, Mirela Kuka
wiley   +1 more source

Stellar Evolution in the Early Universe [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractMassive stars played a key role in the early evolution of the Universe. They formed with the first halos and started the re-ionisation. It is therefore very important to understand their evolution. In this paper, we describe the strong impact of rotation induced mixing and mass loss at very low metallicity (Z).
Hirschi, Raphael, Frischknecht, Urs, Thielemann, F.-K, Pignatari, Marco, Chiappini, Cristina, Ekström, Sylvia, Meynet, Georges, Maeder, André   +7 more
openaire   +5 more sources

The coevolution of the velocity and mass functions of galaxies and dark haloes

, 2010
We employ a bias-corrected abundance matching technique to investigate the coevolution of the LCDM dark halo mass function (HMF), the observationally derived velocity dispersion and stellar mass functions (VDF, SMF) of galaxies between z=1 and 0.
Abadi, Auger, Battaglia, Battaglia, Behroozi, Bell, Bell, Bernardi, Bezanson, Blumenthal, Bolton, Boylan-Kolchin, Brown, Bryan, Bullock, Bundy, Cappellari, Cattaneo, Cenarro, Chae, Chae, Chartas, Choi, Cimatti, Cimatti, Conroy, Conroy, Conselice, Cool, Courteau, de Ravel, Desroches, di Serego Alighieri, Dunkley, Dutton, Faber, Feldmann, Ferrarese, Fontana, Fontanot, Gao, Gavazzi, Gnedin, Grillo, Guo, Ho, Hopkins, Hopkins, Hopkins, Hyde, Ilbert, Jenkins, Kazantzidis, Klypin, Klypin, Kochanek, Koopmans, Kravtsov, Kyu-Hyun Chae, Lacey, Li, Loeb, Lokas, Longhetti, Lukić, Macciò, Marchesini, Masjedi, Matsuoka, Moster, Nakajima, Navarro, Navarro, Newman, Nipoti, Oguri, Pizagno, Pizzella, Pozzetti, Press, Pérez-González, Reed, Rudd, Saha, Scarlata, Seigar, Shankar, Sheth, Sheth, Sheth, Springel, Stringer, Tasitsiomi, Tinker, Tissera, Tonry, Treu, Trujillo, Vale, van der Wel, van der Wel, van Dokkum, van Dokkum, Wake, Warren, Wechsler, White, White, Winn, Xue   +109 more
core   +1 more source

Stellar evolution before the ZAMS [PDF]

, 2005
Young stars on their way to the ZAMS evolve in significantly different ways depending on mass. While the theoretical and observational properties of low- and intermediate-mass stars are rather well understood and/or empirically tested, the situation for ...
Palla, Francesco
core   +1 more source

Leveraging current insights on IL‐10‐producing dendritic cells for developing effective immunotherapeutic approaches

FEBS Letters, EarlyView.
In vivo IL‐10 produced by tissue‐resident tolDC is involved in maintaining/inducing tolerance. Depending on the agent used for ex vivo tolDC generation, cells acquire common features but prime T cells towards anergy, FOXP3+ Tregs, or Tr1 cells according to the levels of IL‐10 produced. Ex vivo‐induced tolDC were administered to patients to re‐establish/
Konstantina Morali, Gloria Giacomello, Michela Vuono, Silvia Gregori   +3 more
wiley   +1 more source

Evolution of long-lived globular cluster stars I. Grid of stellar models with helium enhancement at [Fe/H] = -1.75 [PDF]

A&A 578, A117 (2015), 2015
Our understanding of the formation and early evolution of globular clusters (GCs) has been totally overthrown with the discovery of the peculiar chemical properties of their long-lived host stars. As a consequence, the interpretation of the observed color-magnitude diagrams and of the properties of the GC stellar populations requires the use of stellar
arxiv   +1 more source