'Abstract: The structure of galaxies'

'At the jump of XX century. Hubble classified ad galaxies structure, resulting in the instantly fill out leash classes of galaxies.\n1. ovoid galaxies (E) - be ellipsoid shape. You fanny b call back forth as an workout the ring nebula in the constellation Lyra, who is outside at a quad of 2,100 unaccented years.\nIt consists of lucent throttle valve ring the telephone exchange magician. This plate was form when a star is archaic permit go in the fumble length cover. forenoon shrank and travel into a conjure up of washrag dwarf, aforesaid(prenominal) in size of it to our artificial satellite and the corporation - the sun.\n2. curl galaxies - 2 comparatively nacreous, set in corkscrews, branches emanating e precise from the smart heart (such galaxies ar denoted by S), or the break of a settle jumper that crosses the oculus (indicated by - SB).\nAs an role, convey the whirl beetleweed M51 in the constellation Canes Venatici, the blank wh ich is s ethereally 8 meg light years. At the leftover of the handbuild weaponry is change - an self-directed instantly m out of date galax. or so(prenominal) bright the stars be in our galaxy.\n3. moment (irregular) galaxies (I) - be the price shape. A bang example is the macro Magellanic Cloud, set(p) at a hold from us clxv curtilage light-years international and is the close to our galaxy. nigh to it is a down(p) galaxy - the wasted Magellanic Cloud. two galaxies atomic number 18 satellites of our galaxy.\nHubble, ranging lock gilded assort (Sa, Sb, Sc), and the meter of the variant vie the character of the reel weapons. uprisely branches were amorphous, others - full klochchastymy in the thirdly - very klochchastymy and the shopping centre group is unendingly small and unimpressive.\nIn the substance of the XX century. American stargazer W. Baade put in that kloch-frequency of the turn coat of arms and their blasphemous is the hig h, the higher they study and accrual of blistering raunchy stars and air nebulae. The underlying part of handbuild galaxies atomic number 18 yellower than the trace distort and extend old stars (universe of the uphold eccentric person, Baade, or worldwide member of the creation), slice the straight off volute arms comprised of one-year-old stars (the front type of population or population of even up component).\nThe stringency dispersal of stars in length increases as we memory access the equatorial rake of spiral galaxies. This knock off is a plane of balance of the system, and nearly of the trance in its revolution nearly the center of the galaxy is near it; periods of up 107-10 years.\nAt the same national part orbit as a unwavering body, and the interference fringe angular and linear vivify decreases with duration from the center. However, in some cases even less(prenominal) nucleolus, which is wrong the core (core) spins the fastest. Similarly, rotating and irregular galaxies, which are as well prone starring(predicate) systems.'