Results 1 to 10 of about 262,930 (273)
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
doaj +3 more sources
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
doaj +1 more source
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
doaj +1 more source
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 +13 more
doaj +1 more source
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
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
doaj +1 more source
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
A CANDELS WFC3 Grism Study of Emission-Line Galaxies at z ~ 2: A Mix of Nuclear Activity and Low-Metallicity Star Formation [PDF]
, 2011 We present Hubble Space Telescope Wide Field Camera 3 (WFC3) slitless grism spectroscopy of 28 emission-line galaxies at z ~ 2, in the GOODS-S region of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey.
Atek, Hakim +2 more
core +3 more sources
Planetary Nebulae and the Ionization of the Interstellar Medium in Galaxies
Frontiers in Astronomy and Space Sciences, 2022 We discuss the role of planetary nebulae and their progeny in galaxy context in terms of ionization of the galaxy interstellar medium. This regards ionized gas outside the disk of spiral galaxies, the diffuse ionized medium in spiral galaxies, and the ...
Grażyna Stasińska +2 more
doaj +1 more source
Physical conditions of the interstellar medium in star-forming galaxies at z~1.5 [PDF]
, 2015 We present results from Subaru/FMOS near-infrared (NIR) spectroscopy of 118 star-forming galaxies at $z\sim1.5$ in the Subaru Deep Field. These galaxies are selected as [OII]$\lambda$3727 emitters at $z\approx$ 1.47 and 1.62 from narrow-band imaging.
Goto, Ryosuke +8 more
core +3 more sources