Results 51 to 60 of about 151,190 (310)
The Millennium Galaxy Catalogue: Galaxy Bimodality [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractGalaxy bimodality is caused by the bulge-disc nature of galaxies as opposed to two distinct galaxy classes. This is evident in the colour-structure plane which clearly shows that elliptical galaxies (bulge-only) lie in the red compact peak and late-type spiral galaxies (disc-dominated) lie in the blue diffuse peak.
Driver, Simon P. +2 more
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Galaxies, 2023 We develop a lepton–hadron model for the possible origin of hard very high energy (VHE) spectra from a distant blazar. The model includes synchrotron self-Compton (SSC) and hadronic components.
Wenjing Dong, Qian Dong, Yonggang Zheng
doaj +1 more source
Line-strength indices and velocity dispersions for 148 early-type galaxies in different environments [PDF]
, 2002 We have derived high quality line-strength indices and velocity dispersions for a sample of 148 early-type galaxies in different environments. The wavelength region covered by the observations ($\lambda \simeq 4600$ to 6600 Å) includes the Lick/IDS ...
R. Bender +9 more
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Structural and Morphological Properties of Ultraluminous Infrared Galaxies at 1 < z < 3
Open Astronomy, 2015 Using the Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) near-infrared high-resolution imaging from the 3D-HST survey, we analyze the morphology and structure of 502 ultraluminous infrared galaxies (ULIRGs; LIR > 1012L⊙) at 1 < z < 3. Their rest-
Fang Guanwen +3 more
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ZELDOVICH LOCAL PANCAKE: DARK ENERGY DOMINATION
Odessa Astronomical Publications, 2018 Zeldovich Local Pancake is a two-dimensional system of 15 giant galaxies nearest to us. Two of the galaxies, the Milky Way and the Andromeda Galaxy, move to each other in the Local Group, while the rest of the galaxies are located around the group at ...
A. D. Chernin +2 more
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Galaxy–galaxy lensing in the VOICE deep survey
Astronomy & Astrophysics, 2022 The multi-band photometry of the VOICE imaging data, overlapping with 4.9 deg2of theChandraDeep Field South (CDFS) area, enables both shape measurement and photometric redshift estimation to be the two essential quantities for weak lensing analysis. The depth of magABis up to 26.1 (5σlimiting) inr-band.
Ruibiao Luo +13 more
openaire +4 more sources
Massive Stars in the Tarantula Nebula: A Rosetta Stone for Extragalactic Supergiant HII Regions
Galaxies, 2019 A review of the properties of the Tarantula Nebula (30 Doradus) in the Large Magellanic Cloud is presented, primarily from the perspective of its massive star content.
Paul A. Crowther
doaj +1 more source
First detection of galaxy-galaxy-galaxy lensing in RCS [PDF]
Astronomy & Astrophysics, 2008 The weak gravitational lensing effect, small coherent distortions of galaxy images by means of a gravitational tidal field, can be used to study the relation between the matter and galaxy distribution. In this context, weak lensing has so far only been used for considering a second-order correlation function that relates the matter density and galaxy ...
Simon, P. +7 more
openaire +2 more sources
Galaxy Zoo: Bars in Disk Galaxies
, 2010 We present first results from Galaxy Zoo 2, the second phase of the highly successful Galaxy Zoo project (www.galaxyzoo.org).
Masters, Karen L. +10 more
openaire +5 more sources
Optical polarimetry studies of Seyfert galaxies [PDF]
, 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
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