Results 81 to 90 of about 146,314 (245)

Dust-regulated galaxy formation and evolution:A new chemodynamical model with live dust particles

open access: yes, 2015
Interstellar dust plays decisive roles in the conversion of neutral to molecular hydrogen (H_2), the thermodynamical evolution of interstellar medium (ISM), and the modification of spectral energy distributions (SEDs) of galaxies.
Bekki, Kenji
core   +1 more source

AEOS: Star-by-star Cosmological Simulations of Early Chemical Enrichment and Galaxy Formation

open access: yesThe Astrophysical Journal
The A eos project introduces a series of high-resolution cosmological simulations that model star-by-star chemical enrichment and galaxy formation in the early Universe, achieving 1 pc resolution.
Kaley Brauer   +9 more
doaj   +1 more source

Elliptical Galaxies and Bulges of Disk Galaxies: Summary of Progress and Outstanding Issues

open access: yes, 2015
This is the summary chapter of a review book on galaxy bulges. Bulge properties and formation histories are more varied than those of ellipticals. I emphasize two advances: 1 - "Classical bulges" are observationally indistinguishable from ellipticals ...
A. C. Fabian   +222 more
core   +1 more source

Galaxy Formation and Evolution since z = 1 [PDF]

open access: yes, 2006
Determination of the star formation rate can be done using mid-IR photometry or Balmer line luminosity after a proper correction for extinction effects. Both methods show convergent results while those based on UV or on [OII]3727 luminosities underestimate the SFR by factors ranging from 5 to 40 for starbursts and for luminous IR galaxies, respectively.
Hammer, François   +5 more
openaire   +5 more sources

Deep Swift/UVOT Observations of GOODS-N and the Evolution of the Ultraviolet Luminosity Function at 0.2 < z < 1.2

open access: yesThe Astrophysical Journal
We present Swift Ultraviolet Optical Telescope (UVOT) observations of the deep field GOODS-N in four near-UV filters. A catalog of detected galaxies is reported, which will be used to explore galaxy evolution using UV emission.
Alexander Belles   +4 more
doaj   +1 more source

SDSS-IV MaNGA: Spatial Evolution of Gas-phase Metallicity Changes Induced by Galaxy Interactions

open access: yesThe Astrophysical Journal
Gas-phase metallicity in interacting and merging galaxies offers key insights into their star formation processes and evolutionary histories. This study investigates the spatial evolution of gas-phase metallicity (i.e., oxygen abundance, 12 + log(O/H ...
Hsi-An Pan   +4 more
doaj   +1 more source

Towards understanding the dynamics of the bar/bulge region in our Galaxy

open access: yesEPJ Web of Conferences, 2012
I review some of the work on bars which is closely linked to the bar/bulge system in our Galaxy. Several independent studies, using totally independent methods, come to the same results about the 3D structure of a bar, i.e., that a bar is composed of a ...
Athanassoula E.
doaj   +1 more source

The Formation and Evolution of Disk Galaxies

open access: yes, 1998
We review some of our recent progress in modelling the formation of disk galaxies in the framework of hierarchical structure formation. Our model is not only consistent with the local observations, but also provides a good description of disk evolution out to redshift z~1.
Mao, Shude   +2 more
openaire   +2 more sources

Formation and evolution of bars in disc galaxies

open access: yes, 2002
I follow a bar from its formation, via its evolution, to its destruction and, perhaps, regeneration. I discuss the main features at each stage and particularly the role of the halo. Bars can form even in sub-maximum discs. In fact, such bars can be stronger than bars which have grown in maximum discs.
openaire   +3 more sources

Home - About - Disclaimer - Privacy