Results 11 to 20 of about 5,163,973 (225)
EMISSION LINE GALAXIES IN CLUSTERS [PDF]
, 2006 At the present epoch, clusters of galaxies are known to be a hostile environment for emission-line galaxies, which are more commonly found in low density regions outside of clusters. In contrast, going to higher redshifts the population of emission-line galaxies in clusters becomes progressively more conspicuous, and large numbers of star-forming late ...
Poggianti, B. M., Bianca M. Poggianti
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Spectral classification of emission-line galaxies
, 2000 The main goal of this work is to further investigate the classification of emission-line galaxies from the ``Spectrophotometric Catalogue of H II galaxies'' by Terlevich et al. (1991) in a homogeneous and objective way, using the three line-ratio diagrams, called diagnostic diagrams, of Veilleux & Osterbrock (1987).
Dessauges-Zavadsky, M. +3 more
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Map of the Galaxy in the 6.7-keV emission line [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2006 Abstract We study the two-dimensional surface brightness distribution of the Galactic X-ray background emission outside the central degree around Sgr A* in the 6.7-keV line as measured by the Proportional Counter Array spectrometer of the Rossi X-ray Timing Explorer observatory. The use of the emission line instead of continuum (3–20 keV)
Revnivtsev, M., Molkov, S., Sazonov, S.
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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
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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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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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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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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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