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28 relations: Arc (geometry), Astrophysics, Balmer series, Cambridge University Press, Cecilia Payne-Gaposchkin, Chromosphere, Convection zone, Corona, Effective temperature, Giant star, Halo (optical phenomenon), Kelvin, Light, Magnetic field, Main sequence, NASA, Occultation, Photosphere, Plasma (physics), Radiation zone, Solar core, Solar eclipse, Solar transition region, Star, Starspot, Stellar evolution, Sun, Supergiant star.
Arc (geometry)
In Euclidean geometry, an arc (symbol: ⌒) is a closed segment of a differentiable curve.
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Astrophysics
Astrophysics is the branch of astronomy that employs the principles of physics and chemistry "to ascertain the nature of the astronomical objects, rather than their positions or motions in space".
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Balmer series
The Balmer series or Balmer lines in atomic physics, is the designation of one of a set of six named series describing the spectral line emissions of the hydrogen atom.
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Cambridge University Press
Cambridge University Press (CUP) is the publishing business of the University of Cambridge.
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Cecilia Payne-Gaposchkin
Cecilia Helena Payne-Gaposchkin (May 10, 1900 – December 7, 1979) was a British–American astronomer and astrophysicist who, in 1925, proposed in her Ph.D. thesis an explanation for the composition of stars in terms of the relative abundances of hydrogen and helium.
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Chromosphere
The chromosphere (literally, "sphere of color") is the second of the three main layers in the Sun's atmosphere and is roughly 3,000 to 5,000 kilometers deep.
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Convection zone
A convection zone, convective zone or convective region of a star is a layer which is unstable to convection.
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Corona
A corona (Latin, 'crown') is an aura of plasma that surrounds the Sun and other stars.
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Effective temperature
The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation.
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Giant star
A giant star is a star with substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.
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Halo (optical phenomenon)
Halo (from Greek ἅλως, halōs) is the name for a family of optical phenomena produced by sunlight interacting with ice crystals suspended in the atmosphere.
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Kelvin
The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.
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Light
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
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Magnetic field
A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.
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Main sequence
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
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NASA
The National Aeronautics and Space Administration (NASA) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.
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Occultation
An occultation is an event that occurs when one object is hidden by another object that passes between it and the observer.
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Photosphere
The photosphere is a star's outer shell from which light is radiated.
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Plasma (physics)
Plasma (Henry George Liddell, Robert Scott, A Greek English Lexicon, on Perseus) is one of the four fundamental states of matter, and was first described by chemist Irving Langmuir in the 1920s.
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Radiation zone
A radiation zone, radiative zone or radiative region is a layer of a star's interior where energy is primarily transported toward the exterior by means of radiative diffusion and thermal conduction, rather than by convection.
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Solar core
The core of the Sun is considered to extend from the center to about 0.2 to 0.25 of solar radius.
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Solar eclipse
A solar eclipse (as seen from the planet Earth) is a type of eclipse that occurs when the Moon passes between the Sun and Earth, and when the Moon fully or partially blocks ("occults") the Sun.
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Solar transition region
The solar transition region is a region of the Sun's atmosphere, between the chromosphere and corona.
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Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
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Starspot
Starspots are stellar phenomena.
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Stellar evolution
Stellar evolution is the process by which a star changes over the course of time.
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Sun
The Sun is the star at the center of the Solar System.
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Supergiant star
Supergiants are among the most massive and most luminous stars.
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References
[1] https://en.wikipedia.org/wiki/Stellar_atmosphere
