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31 relations: Annie Jump Cannon, Antonia Maury, Apparent magnitude, Arequipa, Astronomical catalog, Astronomy, Carbon star, CD-ROM, Centre de données astronomiques de Strasbourg, Durchmusterung, Edward Charles Pickering, Epoch (astronomy), EZ Canis Majoris, Harvard College Observatory, Henry Draper, NASA, Peru, Photographic magnitude, Right ascension, Slitless spectroscopy, Southern Hemisphere, Spectral line, Spectroscopy, Spectrum, Star catalogue, Stellar classification, Strasbourg, Vega, VizieR, Williamina Fleming, Wolf–Rayet star.
Annie Jump Cannon
Annie Jump Cannon (December 11, 1863 – April 13, 1941) was an American astronomer whose cataloging work was instrumental in the development of contemporary stellar classification.
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Antonia Maury
Antonia Maury (March 21, 1866 – January 8, 1952) was an American astronomer who published an important early catalog of stellar spectra.
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Apparent magnitude
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
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Arequipa
Arequipa is the capital and largest city of the Arequipa Region and the seat of the Constitutional Court of Peru.
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Astronomical catalog
An astronomical catalog or catalogue is a list or tabulation of astronomical objects, typically grouped together because they share a common type, morphology, origin, means of detection, or method of discovery.
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Astronomy
Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
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Carbon star
A carbon star is typically an asymptotic giant branch star, a luminous red giant, whose atmosphere contains more carbon than oxygen; the two elements combine in the upper layers of the star, forming carbon monoxide, which consumes all the oxygen in the atmosphere, leaving carbon atoms free to form other carbon compounds, giving the star a "sooty" atmosphere and a strikingly ruby red appearance.
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CD-ROM
A CD-ROM is a pre-pressed optical compact disc which contains data.
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Centre de données astronomiques de Strasbourg
The Centre de Données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Center) is a data hub which collects and distributes astronomical information.
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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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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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Epoch (astronomy)
In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.
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EZ Canis Majoris
EZ Canis Majoris (also designated as EZ CMa or WR 6) is a Wolf-Rayet star in the constellation of Canis Major.
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Harvard College Observatory
The Harvard College Observatory (HCO) is an institution managing a complex of buildings and multiple instruments used for astronomical research by the Harvard University Department of Astronomy.
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Henry Draper
Henry Draper (March 7, 1837 – November 20, 1882) was an American doctor and amateur astronomer.
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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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Peru
Peru (Perú; Piruw Republika; Piruw Suyu), officially the Republic of Peru, is a country in western South America.
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Photographic magnitude
Before the advent of photometers which accurately measure the brightness of astronomical objects, the apparent magnitude of an object was obtained by taking a picture of it with a camera.
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Right ascension
Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.
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Slitless spectroscopy
Slitless spectroscopy is astronomical spectroscopy done without a small slit to allow only light from a small region to be diffracted.
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Southern Hemisphere
The Southern Hemisphere is the half of Earth that is south of the Equator.
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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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Spectroscopy
Spectroscopy is the study of the interaction between matter and electromagnetic radiation.
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Spectrum
A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary, without steps, across a continuum.
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Star catalogue
A star catalogue (Commonwealth English) or star catalog (American English), is an astronomical catalogue that lists stars.
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Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
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Strasbourg
Strasbourg (Alsatian: Strossburi; Straßburg) is the capital and largest city of the Grand Est region of France and is the official seat of the European Parliament.
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Vega
Vega, also designated Alpha Lyrae (α Lyrae, abbreviated Alpha Lyr or α Lyr), is the brightest star in the constellation of Lyra, the fifth-brightest star in the night sky, and the second-brightest star in the northern celestial hemisphere, after Arcturus.
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VizieR
The VizieR Catalogue Service is an astronomical catalog service provided by Centre de données astronomiques de Strasbourg.
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Williamina Fleming
Williamina Paton Stevens Fleming (May 15, 1857 – May 21, 1911) was a Scottish-American astronomer.
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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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HD Catalog, HD Catalogue, HDEC, Henry Draper Catalog, Henry Draper Extension, Henry Draper Extension Charts, Henry Draper catalog, Henry Draper catalogue.
References
[1] https://en.wikipedia.org/wiki/Henry_Draper_Catalogue
