Results 111 to 120 of about 144,375 (218)

Spatially resolved spectroscopy of faint star-forming galaxies & their environments in the high redshift universe [PDF]

open access: yes, 2011
This thesis is concerned with the spectroscopic observations of distant galaxies, 1 < z < 5. The galaxies presented here are intrinsically faint such that their ux is dominated by ordinary star formation rather than galaxy-galaxy merging and/or ...
Hurley, Mairéad
core   +1 more source

How Accurately Can Obscured Galaxy Luminosities Be Measured Using Spectral Energy Distribution Fitting of Near- through Far-infrared Observations?

open access: yesThe Astrophysical Journal
Infrared-luminous galaxies are important sites of stellar and black hole mass assembly at most redshifts. Their luminosities are often estimated by fitting spectral energy distribution (SED) models to near- to far-infrared data, but the dependence of ...
Duncan Farrah   +25 more
doaj   +1 more source

Starburst-induced Gas–Star Kinematic Misalignment

open access: yesThe Astrophysical Journal Letters
A kinematic misalignment of the stellar and gas components is a phenomenon observed in a significant fraction of galaxies. However, the underlying physical mechanisms are not well understood. A commonly proposed scenario for the formation of a misaligned
Elia Cenci   +6 more
doaj   +1 more source

An investigation of the active galaxies M82 and NGC 5128 [PDF]

open access: yes, 1995
In this thesis we present multi-waveband imaging polarimetry and spectropolarime- try of the starburst galaxy M82 and multi-waveband imaging polarimetry of the active galaxy NGC 5128. A review of previous studies of these galaxies is given.
Foley, Neasa
core  

The star formation history of early-type galaxies in the fornax cluster [PDF]

open access: yes, 1998
We have measured central line strengths and line-strength gradients for a complete sample of early-type galaxies in the Fornax cluster, comprising 11 elliptical and 11 lenticular galaxies, more luminous than M(_B) = -17.
Kuntschner, Harald, Kuntschner, H.
core  

No Metallicity Preference in Fast Radio Burst Host Galaxies

open access: yesThe Astrophysical Journal Letters
Fast radio bursts (FRBs) are millisecond-duration extragalactic radio transients of unknown origin, and studying their host galaxies could offer clues to constrain progenitor models.
Shotaro Yamasaki   +3 more
doaj   +1 more source

Modelling the UV to sub-mm SED of starburst galaxies

open access: yes, 2015
This paper reviews the theoretical modelling of starburst galaxies with particular emphasis on the importance of the gas-phase physics in determining the form of the continuum SED and the emission line spectrum.
Dopita, Michael
core   +1 more source

Machine Learning Classification of COSMOS2020 Galaxies: Quiescent versus Star-forming

open access: yesThe Astrophysical Journal
Accurately distinguishing between quiescent and star-forming galaxies is essential for understanding galaxy evolution. Traditional methods, such as spectral energy distribution (SED) fitting, can be computationally expensive and may struggle to capture ...
Vahid Asadi   +6 more
doaj   +1 more source

Evidence for multiple types of post-starburst galaxies

open access: yes
The quenching mechanisms of galaxies are not yet fully understood, but post-starburst galaxies provide one explanation for the rapid transition between star-forming and quiescent galaxies.
Harper, Mathieux   +10 more
core   +1 more source

The ultraviolet signature of massive stars in starburst galaxies [PDF]

open access: yes, 1993
Studies in different spectral regimes of starburst galaxies clearly indicate the presence of hot, massive stars. However, only the UV spectral region can be used to directly identify the spectroscopic signature of these stars.
Leitherer, Claus   +2 more
core  

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