Results 91 to 100 of about 173,290,720 (185)

An optical and infrared analysis of blue compact dwarf galaxies [PDF]

open access: yes, 2010
An understanding of Blue Compact Dwarf galaxies (BCDs) and the processes occurring within their chemically un-evolved environments is fundamental in our understanding of the early universe.
James, B.L.
core  

Spatially resolved spectroscopy of Coma Cluster early‐type galaxies. IV. Completing the data set [PDF]

open access: yes, 2008
The long-slit spectra obtained along the minor axis, offset major axis, and diagonal axis are presented for 12 E and S0 galaxies of the Coma Cluster drawn from a magnitude-limited sample studied before.
BENDER R.   +20 more
core   +1 more source

Perfect fluid dark matter: a viability test with galaxy rotation curves

open access: yesEuropean Physical Journal C: Particles and Fields
The anomalous rotation curves of galaxies provide compelling evidence for dark matter, yet its fundamental nature and distribution remain key unresolved issues in astrophysics.
Jan Kuncewicz
doaj   +1 more source

CALIFA : a diameter-selected sample for an integral field spectroscopy galaxy survey [PDF]

open access: yes, 2014
JMA acknowledges support from the European Research Council Starting Grant (SEDmorph; P.I. V. Wild).We describe and discuss the selection procedure and statistical properties of the galaxy sample used by the Calar Alto Legacy Integral Field Area (CALIFA)
M. M. Roth   +137 more
core   +2 more sources

Rotating shallow water modeling of planetary,astrophysical and plasma vortical structures (plasma transport across a magnetic field,model of the jupiter's GRS, prediction of existence of giant vortices in spiral galaxies)

open access: yesDiscrete Dynamics in Nature and Society, 1999
Three kinds of results have been described in this paper. Firstly, an experimental study of the Rossby vortex meridional drift on the rotating shallow water has been carried out.
M. V. Nezlin   +4 more
doaj   +1 more source

The Environment of HII Galaxies revisited

open access: yes, 2013
We present a study of the close (≲ 200h⁻¹₇₅kpc) environment of 110 relatively local (z≲ 0.16) HII galaxies, selected from the Sloan Digital Sky Survey (SDSS; DR7).
Elena Kirilovsky Terlevich   +3 more
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  

The Atlas3D project -- XXIX. The new look of early-type galaxies and surrounding fields disclosed by extremely deep optical images [PDF]

open access: yes, 2014
P-AD acknowledges support from Agence Nationale de la Recherche (ANR10-BLANC-0506-01). LM-D acknowledges support from the Lyon Institute of Origins under grant ANR-10-LABX-66.
Davis, T.   +66 more
core   +1 more source

Astrophysics in a nutshell [PDF]

open access: yes, 2007
A concise but thorough introduction to the observational data and theoretical concepts underlying modern astronomy, Astrophysics in a Nutshell is designed for advanced undergraduate science majors taking a one-semester course.
Maoz, Dan
core  

Active Galactic Nuclei in the Green Valley at z ∼ 0.7

open access: yesThe Astrophysical Journal
We present near-infrared (NIR) spectroscopy using the MMT and Magellan infrared spectrograph for a sample of 29 massive galaxies ( $\mathrm{log}\ {M}_{* }/{M}_{\odot }\gtrsim 10$ ) at z ∼ 0.7 with optical spectroscopy from the Large Early Galaxy ...
Charity Woodrum   +7 more
doaj   +1 more source

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