Results 71 to 80 of about 402,386 (219)

The effect of the environment on the evolution of galaxy colours [PDF]

open access: yes, 2006
In chapter 1 of this thesis, I give a brief overview of the birth of modern cosmology and the growth of the current paradigm. I then go on to describe the different types of galaxies, the star formation rates within them and give some notes about galaxy ...
Davies, Gregory Tudor
core  

The stellar structure of irregular galaxies. Face-on galaxies

open access: yesAstronomy Reports, 2005
Stellar photometry of nearby irregular galaxies of the Local Group is used to identify and study the young and old stellar populations of these galaxies. An analysis of the spatial distributions of stars of different ages in face-on galaxies shows that the young stellar populations in irregular galaxies are concentrated toward the center, and form ...
openaire   +3 more sources

Spectral Energy Distributions for 258 Local Volume Galaxies

open access: yesThe Astronomical Journal, 2023
We present model spectral energy distribution (SED) fits to ultraviolet/optical/infrared observations for the 258 nearby galaxies in the Local Volume Legacy survey, a sample dominated by lower-luminosity dwarf irregular systems.
Daniel A. Dale   +5 more
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

open access: yesExperimental Physiology, Volume 111, Issue 9, Page 4015-4040, 1 September 2026.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Periodic bursts of star formation in irregular galaxies [PDF]

open access: yesAstronomy & Astrophysics, 2004
We present N-body/SPH simulations of the evolution of an isolated dwarf galaxy including a detailed model for the ISM, star formation and stellar feedback. Depending on the strength of the feedback, the modelled dwarf galaxy shows periodic or quasi-periodic bursts of star formation of moderate strength.
Pelupessy, F.I.   +2 more
openaire   +5 more sources

Structure of the dwarf irregular galaxy leo a. [PDF]

open access: yes, 2017
Structure of the Dwarf Irregular Galaxy Leo ...
Leščinskaitė, Alina,
core  

A Multiwavelength Portrait of the 3C 220.3 Lensed System

open access: yesThe Astrophysical Journal
The 3C 220.3 system is a rare case of a foreground narrow-line radio galaxy (“galaxy A,” z _A = 0.6850) lensing a background submillimeter galaxy ( z _SMG = 2.221).
Sóley Ó. Hyman   +12 more
doaj   +1 more source

UVIT Study of the Magellanic Clouds (U-SMAC). III. Hierarchical Star Formation in the Small Magellanic Cloud Regulated by Turbulence

open access: yesThe Astrophysical Journal
The Small Magellanic Cloud (SMC), a satellite galaxy of the Milky Way, is an irregular dwarf galaxy exhibiting evidence of recent and ongoing star formation.
Sipra Hota   +2 more
doaj   +1 more source

Kaempferol Attenuates Spaceflight‐Associated Knee Cartilage Degradation by Targeting NOX4‐Mediated Mitochondrial Dysfunction

open access: yesAdvanced Science, Volume 13, Issue 48, 28 August 2026.
We have shown that both simulated and actual spaceflight contribute to cartilage degradation in the knees of mice. Using RNA sequencing and bioenergetic profiling, we identified NADPH oxidase 4 (NOX4) as a key factor driving these changes. Additionally, we found that kaempferol, a naturally occurring flavonoid that binds directly to NOX4, reduces ...
Yuesong Yin   +23 more
wiley   +1 more source

THE CHEMISTRY OF IRREGULAR GALAXIES

open access: yes, 1995
8 pages with figures, uuencoded, compressed PostScript file; invited talk at the 5th Texas-Mexico Conference on Astrophysics, Tequesquitengo, Mexico, 3-5 April 1995; to appear in Rev. Mex. Astron.
openaire   +2 more sources

Home - About - Disclaimer - Privacy