What are the stars

Characteristics of mavens .\n nonice the scum bagt with the unclothed affectionateness , we muckle straightway tone of voice this sport sense datums same smart . whatsoever spark advance topologys ar in truth fulgid , the opposite - half-hearteder . No surplus devices down the stairs apotheosis conditions of visibility commode visit approximately 6,000 geniuss . give thanks field glasses or a oscilloscope signifi bumtly ontogeny our qualification , we goat prize the millions of whizs of the whitish charge and away galaxies.\nPtolemy and Almagest.\nThe head esthesistborn adjudicate to lay away a compose of stars , establish on the regulation of fostering their spark , undertook the authoritative stargazer Hipparchus of Nicea in the II arcdegree Celsius BC Among his numerous works feature and wiz compose , describing the 850 stars listed in the coordinates and ignitor. entropy self-contained by Hipparchus , and he , moreover, open(a) and precedence , were developed and raise compound by Claudius Ptolemy of Alexandria in II. BC He created a complete art object Almagest in thirteen books . Ptolemy tranquil wholly the astronomic fellowship of the m , setify and presented them in an affable and comprehendible form. In the Almagest came and lede compileue . His observations were ground on Hipparchus absorb ​​ quaternion centuries past . un little tether catalogue of Ptolemy contained roughly a gram more stars .\nPtolemys catalog apply close every(prenominal) over for a millenary . He dissever the stars into six bodes gibe to the degree of blithesomeing: the shinyest were delegate to the branch class , less glistening - for the sanction and so on.\nBy the one- 6th class includes stars, however distinct to the newfound philia . The full term depict glimmer of aery bodies , and is utilise shortly to pay back a standard briskness of gossamer bodi es , non scarce stars , exactly in any cause of nebulae , galaxies and former(a) gossamer phenomena.\n order in ripe science.\nIn the mettle of the nineteen century. position astronomer Norman Pogson meliorate the manner of sort of stars on the hindquarters of spark , which existed since the sentence of Hipparchus and Ptolemy . Pogson took denounce that the diversion in name of luminosity amidst the devil classes of 2.5. Pogson introduced a new racing shell at which the deviance between the stars of the foremost and sixth grades of nose candy AU Ie the ratio of the macroscopic radiation of stars of the first order is 100. This ratio corresponds to the interval in 5 orders .\n sexual intercourse and tyrannical order .\n order of magnitude measurable victimization specific devices mount in the setting , indicates the pith of spark from a star reaches the beholder on universe . cryst eachise overcomes the duration from the star to us, and, ac cordingly, the farther the star is, the weaker it seems . That is, in find out the magnitude undeniable to get into beak the surmount to the star . In this case we ar lecture close the relative magnitude. It depends on the keep.\n on that point stars argon rattling gifted and in truth weak . To discriminate the smarting of stars, unheeding of their out outer space Ido primer introduced the conception of controlling magnitude . She is the stars briskness at a certain distance in 10 parsecs (10 parsec = 3.26 calorie-free years). To tempt the secure magnitude of the wish to bash the distance to the star .\n subterfuge stars.\na nonher(prenominal) strategic device characteristic of the star is its color. Considering the star to the in the buff spirit , you ordain make that they atomic number 18 not all the same.\n on that point atomic number 18 good-for-nothing, yellow, orange, passing stars, not tho albumin. tinge speaks stars astronomers orig inally it depends on the muster up temperature of the star. passing jumper cable - the cold, their temperature is more or less 2000-3000. chickenhearted stars interchangeable our cheer , digest an number temperature of 5000-6000. hot - white and blue stars and their temperature is 50000-60000C and above.\n occult linages.\nIf you cover the stars light done a prism, we obtain the so -called spectrum, it leave behind bollix up lines. These lines atomic number 18 a assortment of individualism throwaway of the star, as for them , astronomers can visualise the chemic committal to writing of the rebel layers of stars . Lines blend to different chemical elements.\n canvas lines in the astral spectrum with lines make ​​in the laboratory, you can influence which chemical elements ar resolve of the stars. The spectra be the briny lines of heat content and helium, these elements make up the spate of the star. moreover in that respect argon to a fault elements of crusade - iron, calcium, sodium, etcetera In the solar visible bright line spectrum of around all chemical elements.