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17 relations: Binary star, Carina (constellation), Carina Nebula, Day, Durchmusterung, Eta Carinae, HD 93129, HD 93250, Henry Draper Catalogue, List of most luminous stars, List of most massive stars, Rotating ellipsoidal variable, Smithsonian Astrophysical Observatory Star Catalog, Stellar classification, Stellar wind, The Astrophysical Journal, Variable star designation.
Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
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Carina (constellation)
Carina is a constellation in the southern sky.
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Carina Nebula
The Carina Nebula (catalogued as NGC 3372; also known as the Grand Nebula, Great Nebula in Carina, or Eta Carinae Nebula) is a large, complex area of bright and dark nebulosity in the constellation Carina, and is located in the Carina–Sagittarius Arm.
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Day
A day, a unit of time, is approximately the period of time during which the Earth completes one rotation with respect to the Sun (solar day).
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Durchmusterung
In astronomy, Durchmusterung or Bonner Durchmusterung (BD), is the comprehensive astrometric star catalogue of the whole sky, compiled by the Bonn Observatory (Germany) from 1859 to 1903.
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Eta Carinae
Eta Carinae (η Carinae, abbreviated to η Car), formerly known as Eta Argus, is a stellar system containing at least two stars with a combined luminosity greater than five million times that of the Sun, located around 7,500 light-years (2,300 parsecs) distant in the constellation Carina.
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HD 93129
HD 93129 is a triple star system in the Carina Nebula, with all three components being hot O class stars amongst the most luminous stars in the Milky Way.
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HD 93250
HD 93250 is a highly luminous hot blue binary star in the Carina Nebula in the constellation Carina.
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Henry Draper Catalogue
The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts, which gave classifications for 86,933 more stars.
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List of most luminous stars
Below is a list of stars arranged in order of decreasing luminosity (increasing bolometric magnitude).
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List of most massive stars
This is a list of the most massive stars so far discovered, in solar masses.
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Rotating ellipsoidal variable
Rotating ellipsoidal variables are a class of variable star.
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Smithsonian Astrophysical Observatory Star Catalog
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
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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 wind
A stellar wind is a flow of gas ejected from the upper atmosphere of a star.
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The Astrophysical Journal
The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.
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Variable star designation
Variable stars are designated using a variation on the Bayer designation format of an identifying label (as described below) combined with the Latin genitive of the name of the constellation in which the star lies.
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