Results 21 to 30 of about 1,640 (188)
The evolution of emission lines in H II galaxies [PDF]
Astronomy & Astrophysics, 2001 Accepted for publication in A&A. LaTeX, 26 pages including figures. The photoionisation models are available at http://webast.ast.obs-mip.fr/people/schaerer/
Stasinska, Grazyna +2 more
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CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at 0.6 < z < 1.3
The Astrophysical Journal, 2023 We investigate spatially resolved emission-line ratios in a sample of 219 galaxies (0.6 < z < 1.3) detected using the G102 grism on the Hubble Space Telescope Wide Field Camera 3 taken as part of the CANDELS Ly α Emission at Reionization survey to ...
Bren E. Backhaus +10 more
doaj +1 more source
X-ray emission of galaxies with emission lines [PDF]
Astronomical School’s Report, 2011 We built new sample of 315 SDSS galaxies which were detected as X-ray sources in 2XMM catalog. On the basis of distribution of relative intensities of emission lines NII [6583] and OIII [5007] we divided objects of the sample into starburst galaxies and galaxies with active nuclei. Also we found distributions of X-ray luminosities of these galaxies.
A. V. Tugay, A. A. Vasylenko
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Simulations of High-redshift [O iii] Emitters: Chemical Evolution and Multiline Diagnostics
The Astrophysical Journal, 2023 Recent observations by the James Webb Space Telescope discovered a number of high-redshift galaxies with strong emission lines from doubly ionized oxygen.
Yurina Nakazato +2 more
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Searching for Emission-Line Galaxies [PDF]
International Astronomical Union Colloquium, 1984 Survey methods for finding emission-line galaxies are reviewed. Observational selection effects are investigated by comparing different surveys and the limitations of the different techniques are discussed. The advantages of Ha surveys for finding low luminosity galaxies and those with low excitation emission spectra are emphasized.
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The Subaru FMOS galaxy redshift survey (FastSound). II. The emission line catalog and properties of emission line galaxies [PDF]
Publications of the Astronomical Society of Japan, 2016 Abstract We present basic properties of ∼3300 emission line galaxies detected by the FastSound survey, which are mostly Hα emitters at z ∼ 1.2–1.5 in the total area of about 20 deg2, with the Hα flux sensitivity limit of ∼1.6 × 10−16 erg cm−2 s−1 at 4.5 σ.
Okada, Hiroyuki +16 more
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Understanding Galaxy Evolution Through Emission Lines [PDF]
Annual Review of Astronomy and Astrophysics, 2019 We review the use of emission lines for understanding galaxy evolution, focusing on excitation source, metallicity, ionization parameter, ISM pressure, and electron density. We discuss the physics, benefits, and caveats of emission line diagnostics, including the effects of theoretical model uncertainties, diffuse ionized gas, and ...
Kewley, Lisa +2 more
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KILOPARSEC-SCALE PROPERTIES OF EMISSION-LINE GALAXIES [PDF]
The Astrophysical Journal, 2014 We perform a detailed study of the resolved properties of emission-line galaxies at kiloparsec scales to investigate how small-scale and global properties of galaxies are related. We use a sample of 119 galaxies in the GOODS fields. The galaxies are selected to cover a wide range in morphologies over the redshift range 0.2 < z < 1.3.
Shoubaneh Hemmati +8 more
openaire +2 more sources
Evolution of the Mass–Metallicity Relation from Redshift z ≈ 8 to the Local Universe
The Astrophysical Journal, 2023 A tight positive correlation between the stellar mass and the gas-phase metallicity of galaxies has been observed at low redshifts. The redshift evolution of this correlation can strongly constrain theories of galaxy evolution.
Danial Langeroodi +19 more
doaj +1 more source
Galaxy Evolution in a Pilot Survey up to z=1 and CDM Halos
Advances in Astronomy, 2011 We study spectral evolution of galaxies in a magnitude limited sample of 550 galaxies from z=1 down to z=0.3 on a pencil beam of ≈10′×10′. We concentrate on the large apparent cosmological structures along the line of sight, and we bin our individual ...
E. Giraud +6 more
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