Results 61 to 70 of about 6,518 (266)

Measuring Resolved Star Formation Histories from High-precision Color–Magnitude Diagrams with StarFormationHistories.jl

open access: yesThe Astrophysical Journal Supplement Series
Understanding how and when galaxies formed stars over the history of the Universe is fundamental to the study of galaxy evolution. The star formation histories (SFHs) of galaxies in the local Universe can be measured with high precision using deep ...
Christopher T. Garling   +5 more
doaj   +1 more source

Hot Stars in Stellar Populations of Galaxies

open access: yesGalaxies
Star-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
doaj   +1 more source

Stellar Populations of the Galactic Disk: Metallicity Distribution and Kinematics

open access: yesOpen Astronomy, 2003
Metallicities and distances have been determined from Vilnius photometry for an in situ sample of nearly 650 stars in eight proper-motion fields at high Galactic latitudes.
Bartašiūtė S.   +5 more
doaj   +1 more source

Paraneoplastic Lupus Nephritis in a Child With Neuroblastoma Recurrence

open access: yes
Pediatric Blood &Cancer, EarlyView.
Gabriele Mortari   +9 more
wiley   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Stellar Ages: A Code to Infer Properties of Stellar Populations

open access: yesThe Astrophysical Journal
We present a novel statistical algorithm, Stellar Ages, which currently infers the age, metallicity, and extinction posterior distributions of stellar populations from their magnitudes.
Joseph J. Guzman   +4 more
doaj   +1 more source

Galactic Stellar Populations

open access: yes, 2005
19 pages, invited review at the Cozumel/Cancun conference on Resolved Stellar Populations, April 2005. ASP Conference proceedings, eds D.
Wyse, Rosemary F. G., Gilmore, Gerard
openaire   +2 more sources

Stellar populations in normal galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2004
6 pages, 4 figures, in Proceedings of the IAU Symposium No. 222 "The Interplay Among Black Holes, Stars, and ISM in Galactic Nuclei", eds. T. Storchi-Bergmann, L.C. Ho, and H.R.
openaire   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Rapid Stellar and Binary Population Synthesis with COMPAS: Methods Paper II

open access: yesThe Astrophysical Journal Supplement Series
The COMPAS ( http://compas.science ) public rapid binary population synthesis code has undergone a number of key improvements since the original COMPAS methods paper was published.
Team COMPAS   +16 more
doaj   +1 more source

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