Results 121 to 130 of about 3,026,820 (400)
The effect of accretion on the pre-main-sequence evolution of low-mass stars and brown dwarfs
, 2017 The pre-main-sequence evolution of low-mass stars and brown dwarfs is studied numerically starting from the formation of a protostellar/proto-brown dwarf seed and taking into account the mass accretion onto the central object during the initial several ...
Elbakyan, Vardan +5 more
core +1 more source
Inflow, Outflow, Yields, and Stellar Population Mixing in Chemical Evolution Models [PDF]
, 2016 Chemical evolution models are powerful tools for interpreting stellar abundance surveys and understanding galaxy evolution. However, their predictions depend heavily on the treatment of inflow, outflow, star formation efficiency (SFE), the stellar ...
B. Andrews +3 more
semanticscholar +1 more source
FEBS Letters, EarlyView.The NlpC_P60 superfamily of peptidases is recognised by its key role in bacterial cell wall homeostasis. Recently, studies have also described the involvement of NlpC_P60‐like enzymes in bacterial competitive mechanisms and pathogenesis across several lineages.
Catharina dos Santos Silva +1 more
wiley +1 more source
Introduction to stellar evolution
Journal of Physics: Conference Series, 2016 This contribution is meant as a first brief introduction to stellar physics. First I shortly describe the main physical processes active in stellar structures then I summarize the most important features during the stellar life-cycle.
openaire +2 more sources
Clusters: age scales for stellar physics [PDF]
, 2016 Ages are key to truly understand a large plethora of astrophysical phenomena. On the other hand, stellar clusters are open windows to understand stellar evolution, specifically, the change with time and mass of different stellar properties. As such, they are our laboratories where different theories can be tested, but without accurate ages, our ...
arxiv +1 more source
Cosmic evolution of stellar quenching by AGN feedback: clues from the Horizon-AGN simulation [PDF]
, 2017 The observed massive end of the local galaxy stellar mass function is steeper than its predicted dark matter (DM) halo counterpart in the standard $\Lambda $CDM paradigm.
R. Beckmann +11 more
semanticscholar +1 more source
Making tau amyloid models in vitro: a crucial and underestimated challenge
FEBS Letters, EarlyView.This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley +1 more source
A Semi-analytical Model for Stellar Evolution in AGN Disks
The Astrophysical JournalDisks of gas accreting onto supermassive black holes may host numerous stellar-mass objects, formed within the disk or captured from a nuclear star cluster.
Alexander J. Dittmann, Matteo Cantiello
doaj +1 more source
Stellar population synthesis at the resolution of 2003 [PDF]
, 2003 We present a new model for computing the spectral evolution of stellar populations at ages between 1 x 10 5 and 2 x 10 1 0 yr at a resolution of 3 A across the whole wavelength range from 3200 to 9500 A for a wide range of metallicities.
G. Bruzual, S. Charlot
semanticscholar +1 more source
Unraveling Mycobacterium tuberculosis acid resistance and pH homeostasis mechanisms
FEBS Letters, EarlyView.Mycobacterium tuberculosis exhibits a remarkable resilience to acid stress. In this Review, we discuss some of the molecular mechanisms and metabolic pathways used by the tubercle bacilli to adapt and resist host‐mediated acid stress. Mycobacterium tuberculosis (Mtb) is a successful pathogen that has developed a variety of strategies to survive and ...
Janïs Laudouze +3 more
wiley +1 more source