2 Aurigae

2 Aurigae is a possible binary star system in the northern constellation of Auriga. ^[1]

20 relations: Apparent magnitude, Asterism (astronomy), Asymptotic giant branch, Auriga, Barium star, Binary star, Constellation, Effective temperature, Epoch (astronomy), Giant star, International Celestial Reference System and its realizations, Photosphere, Radial velocity, S-process, Solar luminosity, Solar mass, Solar radius, Stellar atmosphere, Stellar classification, White dwarf.
Barium stars

Apparent magnitude

Apparent magnitude is a measure of the brightness of a star or other astronomical object.

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Asterism (astronomy)

An asterism is an observed pattern or group of stars in the sky.

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Asymptotic giant branch

The asymptotic giant branch (AGB) is a region of the Hertzsprung–Russell diagram populated by evolved cool luminous stars.

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Auriga

Auriga is a constellation in the northern celestial hemisphere.

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Barium stars are spectral class G to K stars whose spectra indicate an overabundance of s-process elements by the presence of singly ionized barium, Ba II, at λ 455.4 nm. 2 Aurigae and barium star are barium stars.

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Binary star

A binary star or binary star system is a system of two stars that are gravitationally bound to and in orbit around each other. 2 Aurigae and binary star are binary stars.

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Constellation

A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.

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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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Epoch (astronomy)

In astronomy, an epoch or reference epoch is a moment in time used as a reference point for some time-varying astronomical quantity.

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Giant star

A giant star has a substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.

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International Celestial Reference System and its realizations

The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union (IAU).

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Photosphere

The photosphere is a star's outer shell from which light is radiated.

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Radial velocity

The radial velocity or line-of-sight velocity of a target with respect to an observer is the rate of change of the vector displacement between the two points.

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S-process

The slow neutron-capture process, or s-process, is a series of reactions in nuclear astrophysics that occur in stars, particularly asymptotic giant branch stars.

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Solar luminosity

The solar luminosity is a unit of radiant flux (power emitted in the form of photons) conventionally used by astronomers to measure the luminosity of stars, galaxies and other celestial objects in terms of the output of the Sun.

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Solar mass

The solar mass is a standard unit of mass in astronomy, equal to approximately.

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Solar radius

Solar radius is a unit of distance used to express the size of stars in astronomy relative to the Sun.

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Stellar atmosphere

The stellar atmosphere is the outer region of the volume of a star, lying above the stellar core, radiation zone and convection zone.

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Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

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White dwarf

A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter.

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References

[1] https://en.wikipedia.org/wiki/2_Aurigae

Also known as 2 Aur, HD 30834, HIC 22678, HIP 22647, HIP 22678, HIP 22744, HIP 22776, HR 1551, SAO 57475.

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