Results 51 to 60 of about 230,790 (340)

Diffuse Light in Milky Way–like Haloes

open access: yesThe Astrophysical Journal Letters
We investigate the diffuse light (DL) content of dark matter haloes in the mass range $11.5\leqslant \mathrm{log}{M}_{\mathrm{halo}}\leqslant 13$ , a range that also includes the dark matter halo of the Milky Way, taking advantage of a state-of-the-art ...
Emanuele Contini   +4 more
doaj   +1 more source

Dwarf galaxies: Important clues to galaxy formation [PDF]

open access: yesAstrophysics and Space Science, 2003
10 pages, 4 figures, Invited talk in "Galaxy Evolution III: From Simple Approaches to Self-Consistent Models" (Kiel, Germany, July 16-20, 2002) eds. G.
openaire   +3 more sources

Tidally triggered galaxy formation. II - Galaxy number counts [PDF]

open access: yesThe Astrophysical Journal, 1993
A model is presented for the evolution of the galaxy luminosity function in which the distribution of the galaxy masses, star formation time scales, and star formation turn-on redshifts is derived from the initial power spectrum of density fluctuations. The mass function of galaxy halos is very steep at low masses.
Lacey, C.   +3 more
openaire   +3 more sources

NNMT Orchestrates Metabolic‐Epigenetic Reprogramming to Drive Macrophage‐Myofibroblast Transition in Hypertrophic Scarring

open access: yesAdvanced Science, EarlyView.
In macrophage‐myofibroblast transition, upregulated NNMT depletes S‐Adenosylmethionine‌ (SAM) and nicotinamide adenine dinucleotide(NAD+), thereby triggering epigenetic reprogramming via Histone H3 Lysine 27 acetylation (H3K27ac) accumulation at the promoter region of master transcription factor Prrx1.
Xiwen Dong   +11 more
wiley   +1 more source

Exploring the Mass–Metallicity Relationships with the DESI BGS and ELG Samples

open access: yesThe Astronomical Journal
The mass–metallicity relation (MZR) serves as a cornerstone for understanding the chemical evolution of galaxies by correlating the stellar mass of galaxies with their gas-phase metallicity.
Yunxiao Jia   +5 more
doaj   +1 more source

JADES Imaging of GN-z11: Revealing the Morphology and Environment of a Luminous Galaxy 430 Myr after the Big Bang

open access: yesThe Astrophysical Journal, 2023
We present JWST NIRCam nine-band near-infrared imaging of the luminous z = 10.6 galaxy GN-z11 from the JWST Advanced Deep Extragalactic Survey of the GOODS-N field.
Sandro Tacchella   +47 more
doaj   +1 more source

Galaxy formation and evolution: low-surface-brightness galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1998
We investigate in detail the hypothesis that low surface brightness galaxies (LSB) differ from ordinary galaxies simply because they form in halos with large spin parameters. We compute star formation rates using the Schmidt law, assuming the same gas infall dependence on surface density as used in models of the Milky Way.
Jimenez, Raul   +3 more
openaire   +2 more sources

Long‐Term Elevated CO2 Improves Soil Health and Rice Yields in Paddy Fields

open access: yesAdvanced Science, EarlyView.
Combining the two longest‐running rice free‐air CO2 enrichment experiments with a global data synthesis, this study demonstrates that long‐term elevated CO2 consistently enhances soil health. In rice paddies, this improvement sustains the CO2 fertilization effect over decades.
Fan Jiang   +22 more
wiley   +1 more source

Star Formation Rates, Metallicities, and Stellar Masses on Kiloparsec Scales in TNG50

open access: yesThe Astrophysical Journal
Integral field units have extended our knowledge of galactic properties to kiloparsec (or, sometimes, even smaller) patches of galaxies. These scales are where the physics driving galaxy evolution (feedback, chemical enrichment, etc.) take place ...
Jia Qi   +9 more
doaj   +1 more source

Downsizing of Star-Forming Galaxies by Gravitational Processes

open access: yes, 2006
There is observed a trend that a lower mass galaxy forms stars at a later epoch. This downsizing of star-forming galaxies has been attributed to hydrodynamical or radiative feedback processes that regulate star formation.
Mouri, H., Taniguchi, Y.
core   +2 more sources

Home - About - Disclaimer - Privacy