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A simple chart for classifying the main star types using Harvard classification In astronomy , stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors ...
Download as PDF; Printable version; ... (see chart). This process uses ... As this is the core temperature of a star with about 1.5 ...
A peculiar characteristic of this form of the H–R diagram is that the temperatures are plotted from high temperature to low temperature, which aids in comparing this form of the H–R diagram with the observational form. Although the two types of diagrams are similar, astronomers make a sharp distinction between the two.
The surface temperature of a main sequence star is determined by the rate of energy production of its core and by its radius, and is often estimated from the star's color index. [169] The temperature is normally given in terms of an effective temperature , which is the temperature of an idealized black body that radiates its energy at the same ...
Download as PDF; Printable version; ... Temperature: 31,400 ... (circled), as shown in a conventional star chart with north up.
Download as PDF; Printable version; ... The stars with temperatures higher than 60,000 K are included. ... Star name Effective Temperature
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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 ...
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