Results 1 to 10 of about 11,133 (269)
Investigation of the Stellar Population of Several Polar Ring Galaxies
Galaxies, 2016 We present results of our investigation of two multi-spin galaxies which were taken from the catalog of polar ring galaxies. All of them possess nucleus-like knots.
Liliya Shalyapina +4 more
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Joint Analysis of Small-scale Galaxy Clustering and Galaxy–Galaxy Lensing from BOSS Galaxies
The Astrophysical JournalAbstract We present a joint analysis of galaxy clustering and galaxy–galaxy lensing measurements from BOSS galaxies using a simulation-based emulation method combined with a halo occupation distribution model. Our emulators are constructed with the Aemulus ν simulations, a ...
Wenhao Gao +10 more
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From Galaxy‐Galaxy Lensing to Cosmological Parameters
The Astrophysical Journal, 2006 Galaxy-galaxy lensing measures the mean excess surface density DS(r) around a sample of lensing galaxies. We develop a method for combining DS(r) with the galaxy correlation function xi_gg(r) to constrain Omega_m and sigma_8, going beyond the linear bias model to reach the level of accuracy demanded by current and future measurements. We adopt the halo
Yoo, J +5 more
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Mapping the Galaxy and Nearby Galaxies [PDF]
, 2008 Basic Components of the Galaxy and Spiral Galaxies.- Atlas and Catalog of Dark Clouds Based on Digitized Sky Survey I.- New Views of Molecular Gas Distribution and Star Formation of the Southern Sky with NANTEN.- Mapping the Milky Way and the Local Group.- VERA Project.- Dynamics of Stars in the Inner Galactic Bulge Revealed from SiO Maser Surveys ...
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GalaxiesObservations provided by the Hubble Space Telescope (HST) and James Webb Space Telescope (JWST) have revealed a surprising abundance of galaxies at the “cosmic dawn” epoch, z>7. Some of them are found even in a more distant universe at z ≃ 14–16. Most of
Yuri A. Shchekinov, Biman B. Nath
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Study on the Gamma-Ray Radiation Properties of High-Redshift Blazars at z > 2.5
UniverseThe high-redshift blazars are important cosmological probes for exploring the early universe and unraveling the fundamental emission processes and the structure of the active galactic nuclei.
Fan Wu, Li Zhang, Benzhong Dai
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Probing cosmic voids with emission-line galaxies
Frontiers in Astronomy and Space SciencesIntroductionWe aim to provide forecasts for future line intensity mapping (LIM) observations and galaxy redshift surveys, focusing on the physical properties of low-density region of the cosmic web (voids).
Yuka Yamada +2 more
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Comparative Photometry of the Quiet Quasar PDS 456 and the Radio-Loud Blazar 3C 273
GalaxiesA comparative analysis of the photometric variability of the blazar 3C 273 and the quasar PDS 456 using multi-band data from ground- and space-based platforms (2015–2025) reveals contrasting behaviors.
Alberto Silva Betzler +4 more
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GalaxiesSTRange and Odd Morphology Extragalactic Radio Sources (STROMERSs) is a new category of radio galaxies that shows extremely peculiar anatomy. A purely manual visual search is carried out for the identification of such interesting sources.
Tapan K. Sasmal +5 more
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Frontiers in Astronomy and Space SciencesGalaxies with narrow emission lines play a crucial role in testing the theoretical values of transition probabilities, especially for lines that need conditions that are hard to produce in laboratory plasma, and hence the theoretical values could not be ...
Natas̆a Bon +3 more
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