Results 11 to 20 of about 11,157 (237)

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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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, Schaerer, Daniel, Leitherer, Claus   +2 more
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Beyond BPT: A New Multidimensional Diagnostic Diagram for Classifying Power Sources Tested Using the SAMI Galaxy Survey

The Astrophysical Journal, 2023
Current methods of identifying the ionizing source of nebular emission in galaxies are well defined for the era of single-fiber spectroscopy, but still struggle to differentiate the complex and overlapping ionization sources in some galaxies.
Victor D. Johnston, Anne M. Medling, Brent Groves, Lisa J. Kewley, Luca Cortese, Scott Croom, Ángel R. López-Sánchez, Henry Zovaro, Joss Bland-Hawthorn, Julia Bryant, Jon Lawrence, Matt Owers, Samuel Richards, Jesse van de Sande   +13 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, Joanna S. Bridge, Jonathan R. Trump, Nikko J. Cleri, Casey Papovich, Raymond C. Simons, Ivelina Momcheva, Benne W. Holwerda, Zhiyuan Ji, Intae Jung, Jasleen Matharu   +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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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., Pindao, M., Maeder, A., Kunth, D.   +3 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, Naoki Yoshida, Daniel Ceverino   +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, Totani, Tomonori, Tonegawa, Motonari, Akiyama, Masayuki, Dalton, Gavin, Glazebrook, Karl, Iwamuro, Fumihide, Ohta, Kouji, Takato, Naruhisa, Tamura, Naoyuki, Yabe, Kiyoto, Bunker, Andrew J., Goto, Tomotsugu, Hikage, Chiaki, Ishikawa, Takashi, Okumura, Teppei, Shimizu, Ikkoh   +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, Nicholls, David, Sutherland, Ralph   +2 more
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