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15 relations: Baryon acoustic oscillations, Cosmology, Damped Lyman-alpha system, Dark matter, Galaxy, Interstellar medium, Lyman limit, Lyman series, Lyman-alpha blob, Lyman-alpha forest, Lyman-break galaxy, Metallicity, Milky Way, Radiative transfer, Redshift.
Baryon acoustic oscillations
In cosmology, baryon acoustic oscillations (BAO) are regular, periodic fluctuations in the density of the visible baryonic matter (normal matter) of the universe.
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Cosmology
Cosmology (from the Greek κόσμος, kosmos "world" and -λογία, -logia "study of") is the study of the origin, evolution, and eventual fate of the universe.
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Damped Lyman-alpha system
Damped Lyman alpha systems or Damped Lyman alpha absorption systems are concentrations of neutral hydrogen gas, detected in the spectra of quasars.
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Dark matter
Dark matter is a theorized form of matter that is thought to account for approximately 80% of the matter in the universe, and about a quarter of its total energy density.
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Galaxy
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
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Interstellar medium
In astronomy, the interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy.
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Lyman limit
The Lyman limit is the short-wavelength end of the hydrogen Lyman series, at.
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Lyman series
In physics and chemistry, the Lyman series is a hydrogen spectral series of transitions and resulting ultraviolet emission lines of the hydrogen atom as an electron goes from n ≥ 2 to n.
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Lyman-alpha blob
In astronomy, a Lyman-alpha blob (LAB) is a huge concentration of a gas emitting the Lyman-alpha emission line.
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Lyman-alpha forest
In astronomical spectroscopy, the Lyman-alpha forest is a series of absorption lines in the spectra of distant galaxies and quasars arising from the Lyman-alpha electron transition of the neutral hydrogen atom.
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Lyman-break galaxy
Lyman-break galaxies are star-forming galaxies at high redshift that are selected using the differing appearance of the galaxy in several imaging filters due to the position of the Lyman limit.
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Metallicity
In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.
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Milky Way
The Milky Way is the galaxy that contains our Solar System.
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Radiative transfer
Radiative transfer is the physical phenomenon of energy transfer in the form of electromagnetic radiation.
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Redshift
In physics, redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum.
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