Results 101 to 110 of about 83,866 (252)
Galaxy spectral synthesis. II - M32 and the ages of galaxies
The Astrophysical Journal, 1980 The paper presents a population synthesis performed on absolute spectrophotometry for the central 31 in. of M32. The metallicity of M32 is solar with 0.1 dex, implying that major star formation continued in M32 until 5 Gyr ago, or 10 Gyr after the oldest globular clusters formed.
openaire +1 more source
Story2Board: A Training‐Free Approach for Expressive Visual Storytelling
Computer Graphics Forum, EarlyView.Abstract We present Story2Board, a training‐free framework for expressive storyboard generation from natural language. Existing methods narrowly focus on subject identity, overlooking key aspects of visual storytelling such as spatial composition, background evolution, and narrative pacing.
D. Dinkevich +4 more
wiley +1 more source
A Robust Age Indicator for Old Stellar Populations
, 1999 We derive new spectral H_gamma index definitions which are robust age indicators for old and relatively old stellar populations and thus have great potential for solving the age-metallicity degeneracy of galaxy spectra.
A. Vazdekis +7 more
core +2 more sources
Cell Proliferation, EarlyView.Polyamine metabolism is innervation responsive and involved in denervation‐induced muscle atrophy. Inhibition of polyamine metabolism attenuates muscle atrophy by restraining proteolysis and preserving MuSCs homeostasis. Denervation‐induced activation of FAP‐derived FGF7 drives premature MuSCs activation, while DFMO suppresses this paracrine cue to ...
Mingming Zhang +9 more
wiley +1 more source
Anatomy of the Star Formation in a Tidally Disturbed Disk Galaxy: NGC 3718
The Astrophysical JournalWe present a UV, optical, and near-IR study of the star-forming complexes in the nearby peculiar galaxy NGC 3718, using Ultraviolet Imaging telescope, Galaxy Evolution Explorer, Spitzer, and DECam Legacy Survey imaging data.
Chandan Watts +2 more
doaj +1 more source
An Intermediate-Age α-Rich Galactic Population Beyond the Solar Neighborhood [PDF]
, 2020 Understanding the chemical history of the Galaxy is essential for developing theories and models for our Galaxy's formation history. I expanded on the results of previous work studying the relationship between chemical composition and age in the Kepler ...
Warfield, Jack
core
Noble gases and nitrogen in material from asteroid Bennu
Meteoritics &Planetary Science, EarlyView.Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty +7 more
wiley +1 more source
Testable Predictions of Outside-in Age Gradients in Dwarf Galaxies of All Types
The Astrophysical JournalWe use a sample of 73 simulated satellite and central dwarf galaxies spanning a stellar mass range of 10 ^5.3 –10 ^9.1 M _⊙ to investigate the origin of their stellar age gradients.
Claire L. Riggs +6 more
doaj +1 more source
, 2005 We study the globular cluster (GC) system of the Virgo giant elliptical galaxy NGC 4365, using new wide-field VIK imaging. The GC colour distribution has (at least) two peaks, but the colours of the red GCs appear more strongly weighted towards ...
Brodie, J. P. +2 more
core +2 more sources
Age-Dating of Starburst Galaxies [PDF]
AIP Conference Proceedings, 2005 16 pages, 6 figures. Invited review talk. To be published in "The Evolution of Starbursts", ed. S. Huettemeister & E.
openaire +2 more sources