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1806-20 cluster

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1806-20 (originally named the SGR 1806-20 cluster) is a heavily obscured star cluster on the far side of the Milky Way, approximately 50,000 light years distant. [1]

17 relations: Black hole, Charles Wolf (astronomer), Georges Rayet, H II region, Hypergiant, Infrared astronomy, LBV 1806-20, Luminous blue variable, Milky Way, Molecular cloud, Neutron star, SGR 1806-20, Soft gamma repeater, Star cluster, Supergiant star, Supernova, Wolf–Rayet star.

Black hole

A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it.

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Charles Wolf (astronomer)

Charles Joseph Étienne Wolf (9 November 1827 in Vorges – 4 July 1918) was a French astronomer.

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Georges Rayet

Georges-Antoine-Pons Rayet (12 December 1839 – 14 June 1906) was a French astronomer.

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H II region

An H II region or HII region is a region of interstellar atomic hydrogen that is ionized.

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A hypergiant (luminosity class 0 or Ia+) is among the very rare kinds of stars that typically show tremendous luminosities and very high rates of mass loss by stellar winds.

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Infrared astronomy

Infrared astronomy is the branch of astronomy and astrophysics that studies astronomical objects visible in infrared (IR) radiation.

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LBV 1806-20

LBV 1806-20 is a candidate luminous blue variable (LBV) and likely binary star located nearly 40,000 light-years from the Sun, towards the center of the Milky Way.

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Luminous blue variable

Luminous blue variables (LBVs) are massive evolved stars that show unpredictable and sometimes dramatic variations in both their spectra and brightness.

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Milky Way

The Milky Way is the galaxy that contains our Solar System.

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Molecular cloud

A molecular cloud, sometimes called a stellar nursery (if star formation is occurring within), is a type of interstellar cloud, the density and size of which permit the formation of molecules, most commonly molecular hydrogen (H2).

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Neutron star

A neutron star is the collapsed core of a large star which before collapse had a total of between 10 and 29 solar masses.

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SGR 1806-20

SGR 1806-20 is a magnetar, a type of neutron star with a very powerful magnetic field, that was discovered in 1979 and identified as a soft gamma repeater.

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Soft gamma repeater

A soft gamma repeater (SGR) is an astronomical object which emits large bursts of gamma-rays and X-rays at irregular intervals.

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Star cluster

Star clusters are groups of stars.

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Supergiant star

Supergiants are among the most massive and most luminous stars.

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A supernova (plural: supernovae or supernovas, abbreviations: SN and SNe) is a transient astronomical event that occurs during the last stellar evolutionary stages of a star's life, either a massive star or a white dwarf, whose destruction is marked by one final, titanic explosion.

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Wolf–Rayet star

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.

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Redirects here:

Cl* 1806-20, Cl* B1806-20, Cl* J1806-20.


[1] https://en.wikipedia.org/wiki/1806-20_cluster

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