Results 51 to 60 of about 5,163,973 (225)

Measuring the star formation rate density from CNOC2 [PDF]

open access: yes, 2006
This thesis charts the evolution of the Universal Star Formation Rate Density (SFRD) across the redshift range 0.2 < z < 0.6, using the 2nd Canadian Network for Observational Cosmology Survey (CN0C2).
Whitaker, Richard James
core  

Emission-line galaxies in the Bootes void

open access: yesThe Astrophysical Journal, 1987
Les deplacements vers le rouge de 3 nouvelles galaxies montrent qu'elles sont a l'interieur du vide. Le nombre des galaxies dans le vide de Bootes est donc actuellement de huit.
J. Ward Moody   +3 more
openaire   +1 more source

The nature and origin of disky elliptical galaxies [PDF]

open access: yes, 2002
The observational trend that disky elliptical galaxies exhibit younger luminosity- weighted ages than boxy ellipticals is investigated. The presence of a possible young stellar disk embedded in these galaxies is explored by comparing kinematics derived ...
McDermid, Richard Morgan
core  

EMISSION-LINE OBJECTS FROM A PRELIMINARY UKST OBJECTIVE PRISM SURVEY [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1991
A visual search has been made of four fields using United Kingdom 1.2m Schmidt Objective Prism plates with a reciprocal dispersion of 1 180 A/mm at HP. Such plate material is ideally suited to searches for emission-line galaxies.
doaj  

The Second Case of a Major Merger Triggering a Starburst in a Green Pea Galaxy

open access: yesThe Astrophysical Journal
We have used the Karl G. Jansky Very Large Array (VLA) to map H i 21 cm emission from the Green Pea galaxy GP J1148+2546 at z ≈ 0.0451, only the second measurement of the H i spatial distribution of a Green Pea.
S. Purkayastha   +6 more
doaj   +1 more source

A low‐cost, portable polarizing digital light microscope for monitoring crystal growth and for crystal harvesting

open access: yesJournal of Applied Crystallography, EarlyView.
A low‐cost, portable, medium‐resolution polarizing digital light microscope device for monitoring crystal growth and for crystal harvesting is described. The device can be used with a cell phone or a personal computer for real‐time imaging by professional and amateur scientists alike.Motivated by the need for a convenient way to demonstrate the growth ...
Sarah Kennedy   +7 more
wiley   +1 more source

Mapping the dynamics, star-formation rates, and chemical properties of galaxies with integral field spectroscopy [PDF]

open access: yes, 2005
Major advances in the development of instruments for eight and ten meter class telescopes are revolutionising our understanding of galaxy formation. In particular, Integral Field Spectrographs (which produce a three dimensional {x, y, velocity) map of a ...
Swinbank, Anthony Mark   +1 more
core  

Discovering galaxies in the early universe [PDF]

open access: yes, 2022
Star forming galaxies (SFGs) are expected to be the sources responsible for reionising the Universe, but detailed study of these within the Epoch of Reionisation (EoR, z>6), will only become possible with the long-wavelength coverage and sensitivity of ...
Boyett, Kristan
core   +1 more source

Radio galaxies with and without emission lines

open access: yesProceedings of the International Astronomical Union, 2019
AbstractUsing the recent ROGUE I catalogue of galaxies with radio cores (Kozie_l-Wierzbowska et al. 2020) and after selecting the objects which are truly radio active galactic nuclei, AGNs, (which more than doubles the samples available so far), we perform a thorough comparison of the properties of radio galaxies with and without optical emission lines
Grażyna Stasińska   +2 more
openaire   +2 more sources

Survey on Visualization of Information Diffusion over Networks

open access: yesComputer Graphics Forum, EarlyView.
Abstract Information Diffusion (ID) describes how a value (e.g., a pathogen, a rumor, a packet) spreads through an underlying “medium” network of elements (e.g., a social or computer network). Understanding the information diffusion process is essential to predicting trends, controlling misinformation, and enhancing decision‐making as well as ...
T. Baumgartl   +8 more
wiley   +1 more source

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