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Kniga posvyashchena spektral'nym issledovaniyam seyfertovskikh galaktik. Povyshennyy interes k nim svyazan s tem, chto protsessy v ikh yadrakh nel'zya ob"yasnit' svoystvami skontsentrirovannykh v nikh zvyezd i gaza. Po mneniyu bol'shinstva issledovateley v tsentre seyfertovskikh galaktik nakhoditsya sverkhmassivnaya chyernaya dyra v aktivnoy faze. V pervom razdele knigi dayetsya obzor literatury po seyfertovskim galaktikam. Vo vtorom razdele opisano ustroystvo spektrografa slabykh ob"ektov, metodika nablyudeniy i obrabotki spektrov. V tret'em razdele predstavleny rezul'taty issledovaniy izmeneniy shirokoy komponenty bal'merovskoy liniy Hal'fa v spektre seyfertovskoy galaktiki NGC4151 na vremennom intervale 19702009gg. Takzhe privodyatsya rezul'taty issledovaniy sverkhbystrykh izmeneniy bal'merovskoy linii H v spektre seyfertovskoy galaktiki Mrk474. V chetvyertom razdele pokazano primenenie modifitsirovannykh metodov spektroskopii dlya issledovaniya galaktik s protyazhyennymi HIIoblastyami. Kniga budet polezna nauchnym rabotnikam, prepodavatelyam VUZov, PhD doktorantam, magistrantam i bakalavrantam, spetsializiruyushchimsya v oblasti astronomii i astrofiziki, a takzhe tem, kto interesuetsya novymi metodami spektroskopii
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