Results 31 to 40 of about 927,074 (254)
A Study of Abundance Patterns in the Sextans and Sculptor Dwarf Spheroidal Galaxies
The Astrophysical JournalIn this work, we employ a multicomponent decomposition model to study the Sextans and Sculptor dwarf spheroidal galaxies, which have distinct evolutionary histories.
Shuaishuai Yang +3 more
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Hot Stars in Stellar Populations of Galaxies
GalaxiesStar-forming galaxies are hosts of dominant populations of recently formed, hot, massive stars, which give rise to conspicuous stellar spectral features and provide the ionizing fluxes. Strong outflows of these stars shape their properties.
Claus Leitherer
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Asteroseismology of massive stars: new insights of stellar interiors from their pulsations
, 2021 Massive stars are important metal factories which provide energy and chemical feedback to their surroundings. However, stellar evolution models currently contain large theoretical uncertainties for physical mechanisms at work in the deep interiors of ...
Bowman, D.M.
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Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment
Molecular Oncology, EarlyView.This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley +1 more source
Signatures of Mass Segregation from Competitive Accretion and Monolithic Collapse
The Astrophysical JournalThe two main competing theories proposed to explain the formation of massive (>10 M _⊙ ) stars—competitive accretion and monolithic core collapse—make different observable predictions for the environment of the massive stars during, and immediately after,
Richard J. Parker +3 more
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Isolated massive star candidates in NGC 4242 with the Galaxy UV Legacy Project
Astronomy & AstrophysicsContext. There is considerable debate about the formation of massive stars, including whether a high-mass star must always form with a population of low-mass stars, or if it can also form in isolation.
Facchini Pietro +18 more
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Evolution of Massive Population III Stars
Acta Polytechnica CTU Proceedings, 2014 While the evolution of massive stars in the local Universe is dominated by mass-loss, the evolution of massive Population III stars should be dominated by rotation.
Sung-Chul Yoon
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Observational Properties of 155 O- and B-type Massive Pulsating Stars
The Astrophysical Journal Supplement Series, 2023 O- and B-type (OB-type) pulsating stars are important objects for studying the structure and evolution of massive stars through asteroseismology. A large amount of data from various sky surveys provides an unprecedented opportunity to search for and ...
Xiang-dong Shi +5 more
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Molecular Oncology, EarlyView.Matched spatial transcriptomics and single‐nuclei RNA‐seq were generated for anaplastic and BRAFV600E papillary thyroid cancers revealing generic and tumor‐specific states occurring in cancer cells and in the tumor microenvironment. In this context, cancer dedifferentiation mirrored organoid maturation through ordered thyroid marker gain/loss ...
Adrien Tourneur +11 more
wiley +1 more source
Dust around Massive Stars Is Agnostic to Galactic Environment: New Insights from PHAT/BEAST
The Astrophysical JournalResolving the environments of massive stars is crucial for understanding their formation mechanisms and their impact on galaxy evolution. An important open question is whether massive stars found in diffuse regions outside spiral arms formed in situ or ...
Christina Willecke Lindberg +4 more
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