Subdwarf

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Subdwarf

a dwarf star in the halo of the Galaxy. By comparison with stars of the same mass in the main sequence of the Hertzsprung-Russell diagram, subdwarfs have a higher surface temperature and a lower metal content in their atmospheres. Subdwarfs do not obey the mass-luminosity law that holds for most stars.

The use of the term “subdwarf” is due to the circumstance that for a long time the stars of this type were believed to form in the Hertzsprung-Russell diagram a separate sequence parallel to the main sequence and lying 1.5–2 stellar magnitudes below it. In actuality, subdwarfs are for the most part main sequence stars. The displacement of subdwarfs below the main sequence was a result of a failure to correctly allow for the blanketing effect in subdwarf spectra. Subdwarfs are believed to be old stars.

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No references found			Only a few dozen ultracool subdwarfs, which are up to 10,000 times fainter than the Sun, have been identified. 'Ultracool' stars roam galaxy at high speed by Daily Post (Liverpool, England) Our calculations show that this subdwarf travels up to 200,000 light years away from the center of the Galaxy, almost 10 times farther than the Sun," said Bochanski, a postdoctoral researcher in Burgasser's group at MIT. Ultracool stars take 'wild rides' as they orbit around the Milky Way by Asian News International Prof Warner attended the conference "Hot Subdwarf Stars and related Objects" in Bamberg (D) in July 2007 and gave the conference summary. University of Cape Town: Astronomy Department--2007 annual report by Monthly Notes of the Astronomical Society of Southern Africa			subcrust subcutaneous subcutaneous connective tissue subcutaneous emphysema Subcutaneous Musculature subcutaneous mycosis subcycle generator subdevice bit subdiagonal subdirectory subdivided capacitor subdivided truss subdivision subdivision graph subdivision regulations subdomain Subdominant subdrain subdrainage subdrilling subduction subduction zone subduction zones subdural hematoma subdural hemorrhage Subdwarf subdwarf star subdwarf symbiotic subendothelial layer Subensign Subequatorial Belt suberic acid Suberin suberinite Suberization suberose subfactorial Subfamily subfeeder subfeldspathic subfield subfloor subflooring subfolder subframe subgelisol Subgenus subgeostrophic wind Subgiant subgiant CH star subgiant star			Subdulcid Subduple Subduple ratio Subduplicate Subduplicate ratio subdural subdural subdural abscess subdural abscess Subdural bleeding Subdural bleeding Subdural cavity subdural effusion subdural empyema Subdural haematoma Subdural haematoma Subdural haemorrhage Subdural haemorrhage Subdural hematoma Subdural hematoma Subdural hematoma Subdural hematoma subdural hemorrhage subdural hemorrhage Subdural hygroma subdural puncture subdural space subdural space subdural space subdural space Subdwarf Subdwarf star Subdwarf stars subdwarf symbiotic Subdwarf track stars SUBE SUBEASTLANT SUBEB Subeconomic Demonstrated Resources Subedar Subedar of Deccan Subedar of Deccan subedit subedited subediting subeditor subeditorial subeditors subedits Subelongate Subempleo subemployed subemployment Subemprego Subendocardial Subendocardial Subendocardial subendocardial coat subendocardial coat

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