Results 51 to 60 of about 214,380 (335)

The Correlations of Stellar Tidal Disruption Rates with Properties of Massive Black Holes and Their Host Galaxies

open access: yesThe Astrophysical Journal, 2023
Stars can be either disrupted as tidal disruption events (TDEs) or swallowed whole by massive black holes (MBHs) at galactic centers when they approach sufficiently close to these MBHs.
Yunfeng Chen, Qingjuan Yu, Youjun Lu
doaj   +1 more source

Stellar Evolution in the Early Universe [PDF]

open access: yesProceedings 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   +7 more
openaire   +5 more sources

Dendritic cells steering antigen and leukocyte traffic in lymph nodes

open access: yesFEBS Letters, EarlyView.
Dendritic cells are key players in the activation of T cells and their commitment to effector function. In this In a Nutshell Review, we will discuss how dendritic cells guide the trafficking of antigen and leukocytes in the lymph node, thus influencing T‐cell activation processes. Dendritic cells (DCs) play a central role in initiating and shaping the
Enrico Dotta   +3 more
wiley   +1 more source

A Model for Eruptive Mass Loss in Massive Stars

open access: yesThe Astrophysical Journal
Eruptive mass loss in massive stars is known to occur, but the mechanism(s) are not yet well understood. One proposed physical explanation appeals to opacity-driven super-Eddington luminosities in stellar envelopes.
Shelley J. Cheng   +5 more
doaj   +1 more source

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

open access: yes, 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   +109 more
core   +1 more source

Introduction to the Theory of Stellar Evolution [PDF]

open access: yes, 2014
In this chapter we briefly review the basics of the theory of stellar evolution.
Beccari,G, CARRARO, GIOVANNI
openaire   +5 more sources

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

open access: yesFEBS 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

The Effect of Stellar Evolution on Dispersal of Protoplanetary Disks: Disk Fraction in Star-forming Regions

open access: yesThe Astrophysical Journal
We study the effect of stellar evolution on the dispersal of protoplanetary disks by performing one-dimensional simulations of long-term disk evolution.
Ayano Komaki, Naoki Yoshida
doaj   +1 more source

Constraints on the Formation of M31’s Stellar Halo from the SPLASH Survey

open access: yesGalaxies, 2017
The SPLASH (Spectroscopic and Photometric Landscape of Andromeda’s Stellar Halo) Survey has observed fields throughout M31’s stellar halo, dwarf satellites, and stellar disk.
Karoline Gilbert
doaj   +1 more source

Evolution of the First Stellar Generations [PDF]

open access: yesEAS Publications Series, 2007
6 pages, 3 figure, to appear in the proceedings of "Chemodynamics: from the first stars to local galaxies ...", Lyon, France, 10-14 July ...
André Maeder   +4 more
openaire   +4 more sources

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