11481.對(duì)sdssdr7中“星系對(duì)”選擇標(biāo)準(zhǔn)的探討

1、學(xué)校代碼：學(xué)校代碼：1027010270分類號(hào)：分類號(hào)：P14P14學(xué)號(hào)：學(xué)號(hào)：122200734122200734碩士學(xué)位論文對(duì)SDSSDR7中“星系對(duì)”選擇標(biāo)準(zhǔn)的探討學(xué)院：數(shù)理學(xué)院專業(yè)：天體物理研究方向：星系形成與演化研究生姓名：潘晟磊指導(dǎo)教師：羅智堅(jiān)AbstractShanghaiNmalUniversityMasterofPhilosophyIIAbstractInteractionmergingbetweengalaxiesp

2、layanimptantroleintheevolutionofgalaxies.Merginggalaxiesarealsothemostattractiveobjectsintheresearch.Theeticallyspeakingtheprocessofinteractionmergingpropeltheevolutionofgalaxiestheyalsoaffectmphologicalspectralacteristi

3、csgasdynamicshighenergyprocessesnuclearactivity.Toomre(1997)wasoneofthefirstresearcherwhoproposedthatthefmationofellipticalgalaxiesstemfrominteractionofspiralgalaxies.Schweizer(1999)didsamestudyabouttheeffectofmergingpro

4、cesstoearlytypediskgalaxiesellipticalgalaxies.Butgivendifferentdataioncriteriathoseresearchesusedtogalaxypairstheirsamplepropertiesexistedsomestatisticdifferencesalsotheresultswerenotentirelysame.BasedonthewkofAllametal.

5、(2004)Ellisonetal.weedtwohighqualitygalaxypairssamplefromphotometricspectrometricdatabasesofSDSSDR7byusingtheirioncriteria.Meoverwecomparedthesetwomerginggalaxysamplesanalyzedthedifferencesofsomemerginggalaxypairsdiscuss

6、thereasonfthesedifferences.wealsodownloadmanyparametersofthesegalaxiesfromDR7collecttheirmetallicitystarfmationrate(SFR)otherdatafromotherdatabasesffurtherstatisticalresearch.Wealsosimulatedanumberofgalaxieswiththesamere