Results 161 to 170 of about 256,920 (281)

Dynamical friction of radio galaxies in galaxy clusters [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2008
Abstract The distribution of luminous radio galaxies in galaxy clusters has been observed to be concentrated in the inner region. We consider the role of dynamical friction of massive galaxies (M∼ 1012.5M⊙), assuming them to be hosts of luminous radio galaxies, and show that beginning with a Navarro–Frenk–White density profile of a ...
openaire   +4 more sources

Damsels in Disguise: Development of Ultraviolet Sensitivity and Colour Patterns in Damselfishes (Pomacentridae)

open access: yesMolecular Ecology, Volume 34, Issue 6, March 2025.
ABSTRACT Damselfishes (Pomacentridae) are widespread and highly abundant on tropical coral reefs. They exhibit diverse body colouration within and between the ~250 species and across ontogenetic stages. In addition to human‐visible colours (i.e., 400–700 nm), most adult damselfishes reflect ultraviolet (UV, 300–400 nm) colour patches.
Valerio Tettamanti   +3 more
wiley   +1 more source

Radio Galaxy Zoo: host galaxies and radio morphologies for large surveys from visual inspection [PDF]

open access: yesarXiv, 2016
We present early results from Radio Galaxy Zoo, a web-based citizen science project for visual inspection and classification of images from all-sky radio surveys. The goals of the project are to classify individual radio sources (particularly galaxies with multiple lobes and/or complex morphologies) as well as matching the continuum radio emission to ...
arxiv  

The ATESP 5 GHz radio survey IV. 19, 38, and 94 GHz observations and radio spectral energy distributions

open access: yes, 2018
It is now established that the faint radio population is a mixture of star-forming galaxies and faint active galactic nuclei (AGNs), with the former dominating below S(1.4GHz) \sim 100 muJy and the latter at larger flux densities.
De Ruiter, H. R.   +3 more
core   +1 more source

Radio Continuum Halos of Seven Nearby Large Galaxies Using uGMRT

open access: yesThe Astrophysical Journal
We present the results of deep radio observations of seven nearby large galaxies observed using the upgraded Giant Metrewave Radio Telescope (uGMRT) 0.3–0.5 GHz receivers with an angular resolution of ∼10″.
Souvik Manna, Subhashis Roy, Tapas Baug
doaj   +1 more source

On the local radio luminosity function of galaxies. I: the Virgo cluster [PDF]

open access: yesarXiv, 1998
We cross-correlate the galaxies brighter than mB=18 in the Virgo cluster with the radio sources in the NVSS survey (1.4 GHz), resulting in 180 radio-optical identifications. We determine the radio luminosity function of the Virgo galaxies, separately for the early- and late-types. Late-type galaxies develop radio sources with a probability proportional
arxiv  

Peculiar Galaxies and Radio Sources

open access: yesScience, 1966
Pairs of radio sources which are separated by from 2° to 6° on the sky have been investigated. In a number of cases peculiar galaxies have been found approximately midway along a line joining the two radio sources. The central peculiar galaxies belong mainly to a certain class in the recently compiled Atlas of Peculiar Galaxies
openaire   +5 more sources

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