Results 61 to 70 of about 1,827 (268)
RR Lyrae and Type II Cepheid Variables in Globular Clusters: Optical and Infrared Properties
Universe, 2022 Globular clusters are both primary fossils of galactic evolution and formation and are ideal laboratories for constraining the evolution of low-mass and metal-poor stars.
Anupam Bhardwaj
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Challanges for stellar pulsation and evolution theory [PDF]
Communications in Asteroseismology, 2009 During the last few decades, great effort has been made towards understanding hydrodynamical processes which determine the structure and evolution of stars. Up to now, the most stringent constraints have been provided by helioseismology and stellar cluster studies. However, the contribution of asteroseismology becomes more and more important, giving us
openaire +4 more sources
A Compact Source for Quasi-periodic Pulsation in an M-class Solar Flare [PDF]
Astrophysical Journal, 2019 Quasi-periodic pulsations (QPPs) are usually found in the light curves of solar and stellar flares; they carry the features of time characteristics and plasma emission of the flaring core, and could be used to diagnose the coronas of the Sun and remote ...
D. Yuan +4 more
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The Astrophysical Journal, 2023 Betelgeuse, the nearest red supergiant, dimmed to an unprecedented level in early 2020. The star emerged from this “Great Dimming” episode with its typical, roughly 400 days pulsation cycle halved, and a new dominant period of around 200 days.
Morgan MacLeod +4 more
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Bifurcation in Hydrodynamic Models of Stellar Pulsation [PDF]
International Astronomical Union Colloquium, 1993 AbstractPhenomena of bifurcation in hydrodynamic stellar models of radial pulsation are reviewed. By changing control parameters of models, we can see qualitatively different pulsation behaviors in hydrodynamic models with transitions due to various types of bifurcation.In weakly dissipative models (classical Cepheids).
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Pulsation models of O-rich and C-rich long period variables
EPJ Web of Conferences, 2017 The intrinsic variability of luminous red giants is an observable providing important information about stellar structure and evolution. Our aim is to provide a solid theoretical background to the wide amount of data coming from present and future ...
Trabucchi Michele +4 more
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Dendritic cells steering antigen and leukocyte traffic in lymph nodes
FEBS 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
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EPJ Web of Conferences, 2017 The 22nd edition of the Los Alamos Stellar Pulsation Conference Series was held in San Pedro de Atacama, northern Chile, between Nov. 28 and Dec. 2, 2016. Here is a short description of the event.
Catelan Márcio, Gieren Wolfgang
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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 +3 more
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Tipsy pulsation of classical Cepheids – lessons from space photometry
EPJ Web of Conferences, 2015 Space photometric data of the Kepler Cepheid, V1154 Cygni, and those of SZ Tauri (MOST photometry) indicate that classical Cepheids are not strictly regular pulsators.
Szabados L. +4 more
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