Results 1 to 10 of about 11,157 (237)
The assembly bias of emission-line galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT The next generation of spectroscopic surveys will target emission-line galaxies (ELGs) to produce constraints on cosmological parameters. We study the large-scale structure traced by ELGs using a combination of a semi-analytical model of galaxy formation, a code that computes the nebular emission from H ii regions using the ...
Esteban Jiménez +5 more
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The galaxy–halo connection of emission-line galaxies in IllustrisTNG [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We employ the hydrodynamical simulation IllustrisTNG-300-1 to explore the halo occupation distribution (HOD) and environmental dependence of luminous star-forming emission-line galaxies (ELGs) at z ∼ 1. Such galaxies are key targets for current and upcoming cosmological surveys.
Boryana Hadzhiyska +3 more
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Study of star formation rate and metallicity of the low redshift (z < 0.02) dwarf galaxies
Bibechana, 2021 In this paper, we have presented an analysis of emission lines from two dwarf galaxies. We analyzed the strongest emission lines of wavelength ranging from 4100 Å to 6700 Å.
S. P. Gautam +4 more
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UNITSIM-Galaxies: data release and clustering of emission-line galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT New surveys such as European Space Agencys (ESA’s) Euclid mission are planned to map with unprecedented precision the large-scale structure of the Universe by measuring the 3D positions of tens of millions of galaxies. It is necessary to develop theoretically modelled galaxy catalogues to estimate the expected performance and to
Alexander Knebe +9 more
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Modelling emission lines in star-forming galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We present a new model to compute the luminosity of emission lines in star-forming galaxies and apply this in the semi-analytical galaxy formation code galform. The model combines a pre-computed grid of H II region models with an empirical determination of how the properties of H II regions depend on the macroscopic properties ...
C M Baugh +3 more
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GLEAM: Galaxy Line Emission & Absorption Modeling [PDF]
The Astronomical Journal, 2021 Abstract We present Galaxy Line Emission & Absorption Modeling (gleam), a Python tool for fitting Gaussian models to emission and absorption lines in large samples of 1D extragalactic spectra. gleam is tailored to work well in batch mode without much human interaction.
Andra Stroe, Victor-Nicolae Savu
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Finding Peas in the Early Universe with JWST
The Astrophysical Journal Letters, 2023 The Early Release Observations (EROs) of JWST beautifully demonstrate the promise of JWST in characterizing the universe at Cosmic Dawn. We analyze the Near Infrared Spectrograph ERO spectra of three z ∼ 8 galaxies to determine their metallicities, gas ...
James E. Rhoads +8 more
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Spectral classification of emission-line galaxies [PDF]
The Astrophysical Journal Supplement Series, 1986 A revised method of classification of narrow-line active galaxies and H II region-like galaxies is proposed. It involves the line ratios which take full advantage of the physical distinction between the two types of objects and minimize the effects of reddening correction and errors in the flux calibration.
D. E. Osterbrock, S. Veilleux
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The Astrophysical Journal Supplement Series, 2023 This article reports a sample of 1830 strong [O iii ] λ 5007 emission-line compact galaxies discovered with the LAMOST spectroscopic survey and the photometric catalog of the Sloan Digital Sky Survey.
Siqi Liu +6 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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