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Stellar classification and Wolf–Rayet star

Shortcuts: Differences, Similarities, Jaccard Similarity Coefficient, References.

Difference between Stellar classification and Wolf–Rayet star

Stellar classification vs. Wolf–Rayet star

In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of highly ionised helium and nitrogen or carbon.

Similarities between Stellar classification and Wolf–Rayet star

Stellar classification and Wolf–Rayet star have 30 things in common (in Unionpedia): Asymptotic giant branch, Balmer series, Carbon, Edward Charles Pickering, Effective temperature, Electromagnetic radiation, Helium, Hydrogen, Hydrogen line, International Astronomical Union, List of most massive stars, Luminosity, Metallicity, Milky Way, Nitrogen, Nuclear fusion, Oxygen, P Cygni, Photosphere, Planetary nebula, Silicon, Spectral line, Stellar classification, Stellar evolution, Stellar population, Stellar wind, Sun, Triple-alpha process, Ultraviolet, White dwarf.

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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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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Carbon

Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.

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Edward Charles Pickering

Prof Edward Charles Pickering FRS(For) HFRSE (July 19, 1846 – February 3, 1919) was an American astronomer and physicist and the older brother to William Henry Pickering.

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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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Electromagnetic radiation

In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.

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Helium

Helium (from lit) is a chemical element with symbol He and atomic number 2.

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Hydrogen

Hydrogen is a chemical element with symbol H and atomic number 1.

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Hydrogen line

The hydrogen line, 21-centimeter line or H I line refers to the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms.

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International Astronomical Union

The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.

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List of most massive stars

This is a list of the most massive stars so far discovered, in solar masses.

List of most massive stars and Stellar classification · List of most massive stars and Wolf–Rayet star · See more »

Luminosity

In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.

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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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Nitrogen

Nitrogen is a chemical element with symbol N and atomic number 7.

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Nuclear fusion

In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons).

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Oxygen

Oxygen is a chemical element with symbol O and atomic number 8.

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P Cygni

P Cygni (34 Cyg) is a variable star in the constellation Cygnus.

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Photosphere

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

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Planetary nebula

A planetary nebula, abbreviated as PN or plural PNe, is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.

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Silicon

Silicon is a chemical element with symbol Si and atomic number 14.

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Spectral line

A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.

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Stellar classification

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

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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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Stellar population

During 1944, Walter Baade categorized groups of stars within the Milky Way into bluer stars associated with the spiral arms and the general position of yellow stars near the central galactic bulge or within globular star clusters.

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Stellar wind

A stellar wind is a flow of gas ejected from the upper atmosphere of a star.

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Sun

The Sun is the star at the center of the Solar System.

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Triple-alpha process

The triple-alpha process is a set of nuclear fusion reactions by which three helium-4 nuclei (alpha particles) are transformed into carbon.

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Ultraviolet

Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.

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White dwarf

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

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The list above answers the following questions

Stellar classification and Wolf–Rayet star Comparison

Stellar classification has 230 relations, while Wolf–Rayet star has 106. As they have in common 30, the Jaccard index is 8.93% = 30 / (230 + 106).

References

This article shows the relationship between Stellar classification and Wolf–Rayet star. To access each article from which the information was extracted, please visit:

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