Results 151 to 160 of about 605,159 (270)

Role of Gaseous Disk in the Formation of the Spiral Structure of the Milky Way Galaxy

open access: yesOpen Astronomy, 2016
We use observational gaseous and stellar density distributions in the disk of the Milky Way (MW) galaxy together with the disk rotation curve and measured disk velocity dispersion to build collisionless and combined collisionless-gaseous equilibrium ...
Korchagin V. I.   +2 more
doaj   +1 more source

Dark matter or modified dynamics?: hints from galaxy kinematics

open access: yes, 2010
I show two observational projects I am involved in, which are aimed at understanding better the existence and nature of dark matter, and also aimed at testing alternatives to galactic dark matter such as MOND (Modified Newtonian Dynamics).
Gentile, Gianfranco
core   +1 more source

The Sunburst Arc with JWST. IV. The Importance of Interaction, Turbulence, and Feedback for Lyman-continuum Escape

open access: yesThe Astrophysical Journal
At present, the best opportunity for detailed Lyman continuum (LyC) escape studies is in gravitationally lensed galaxies at z  ≳ 2. Only one such galaxy currently exists in the literature with sufficient magnification and spatial resolution: the Sunburst
T. Emil Rivera-Thorsen   +15 more
doaj   +1 more source

Optical polarimetry studies of Seyfert galaxies [PDF]

open access: yes, 1999
Optical imaging polarimetry has been performed on seven nearby Seyfert galaxies, three with face-on and four with edge-on host galaxies of various morphological classifications.
Felton, Michelle Ann
core  

High-resolution Optical IFU Spectroscopy of the Complex Galaxy Merger II Zw 096

open access: yesThe Astrophysical Journal
Luminous and ultraluminous IR galaxies are critical for investigating feedback mechanisms due to a combination of intense star formation episodes and active galactic nuclei (AGN), particularly in the context of complex galaxy interactions.
Clemente Riesco   +22 more
doaj   +1 more source

Kinematic and Dynamics of the Galaxy ESO 358-60

open access: yesThe Astrophysical Journal
We investigate the velocity field derived from H I measurements of the irregular galaxy ESO 358-60 using the velocity ring model (VRM) method. This technique, which assumes a coplanar disk, allows us to reconstruct coarse-grained maps of both radial and ...
Francesco Sylos Labini   +1 more
doaj   +1 more source

Modeling the Kinematics of Distant Galaxies

open access: yes, 2012
7 pages, 3 figures, accepted for publication in Baltic ...
Kipper, R., Tempel, E., Tamm, A.
openaire   +2 more sources

Visit Nearby Halo Substructures Using LAMOST DR9 MRS Data

open access: yesThe Astrophysical Journal
Based on the LAMOST DR9 Medium Resolution Spectra (MRS) catalog, combined with astrometries from Gaia DR3, we conducted an investigation into the substructures in the stellar halo to obtain their chemical and kinematic information.
Xin-Zhe Tang   +5 more
doaj   +1 more source

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  

Kinematics of a high-redshift galaxy: A case study

open access: yes, 2000
A kinematics of a z = 2.81 galaxy toward bright QSO 0528-250, as inferred from the absorption spectroscopy is discussed. There are sufficient arguments for a far-reaching conclusion that we are observing an older, uninvolved version of the local Galactic
Ćirković M.M.
core   +1 more source

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