spectral classification वाक्य
उदाहरण वाक्य
मोबाइल
- He was studying the relationship between the spectral classification of stars and their actual brightness as corrected for distance their absolute magnitude.
- It is a bluish-white star of A7V spectral classification, meaning it has a surface temperature of 7, 500 to 11, 000 kelvins.
- Faint H? emission lines have been detected in the spectrum of 3 Geminorum, but this is not usually expressed in published spectral classifications.
- Under the Morgan-Keenan spectral classification scheme, planetary nebulae are classified as " Type-"'P " "', although this notation is seldom used in practice.
- When astronomers developed the spectral classification of the carbon stars, they had considerable difficulty when trying to correlate the spectra to the stars'effective temperatures.
- AD Leonis is a main sequence star with a spectral classification of M3.5V . It is a flare star that undergoes random increases in luminosity.
- White giant ( A ) ( spectral classification ), Catalogue number : 8 Mon, Brightness + 4.4, Distance in light years is 130 light years
- The Yerkes spectral classification system is a two-dimensional scheme that uses a letter and number combination to denote that temperature of a star ( e . g.
- The spectral classification of this star is F1III, which suggests it is an F-type that has evolved away from the main sequence and expanded into a giant star.
- The WO spectral classification had already been defined, but neither paper considered WR 30a to show sufficiently high excitation lines or strong oxygen lines to merit that classification.
- More commonly, hypergiants are classed as Ia-0, Ia +, or even just Iae based solely on the observed spectra and red supergiants rarely receive these extra spectral classifications.
- This star, of spectral classification WO2, is one of the very few known oxygen-sequence Wolf-Rayet stars, just four in the Milky Way galaxy and five in external galaxies.
- Philip C . Keenan, whose work in the spectral classification of stars helped astronomers understand the chemical evolution of galaxies, died Thursday at a hospital in Columbus, Ohio.
- This star served as a primary standard in the MK spectral classification system with a stellar classification of B6 V, indicating that it is a B-type main sequence star.
- Several different types of collections are titled spectral atlases : those intended spectral classification, for key reference or as a collection of spectras of a general type of object.
- Cannon found spectral classifications for 46, 850 fainter stars in selected regions of the sky in the " Henry Draper Extension ", published in six parts between 1925 and 1936.
- Keenan was an American spectroscopist who collaborated with William Wilson Morgan and Edith Kellman ( 1911 2007 ) to develop the MKK stellar spectral classification system between 1939 and 1943.
- The spectral classification of stars, which is primarily a determination of surface temperature, is based on the relative strength of spectral lines, and the Balmer series in particular is very important.
- Early spectral classification of the nuclei of the LIRGs that host hydroxyl megamasers indicated that the properties of LIRGs that host hydroxyl megamasers cannot be distinguished from the overall population of LIRGs.
- Each star is assigned a " spectral class " from the older Harvard spectral classification and a " luminosity class " using Roman numerals as explained below, forming the star's spectral type.
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