{"title":"阻尼Lyman-Alpha星系中金属和恒星的演化","authors":"V. Kulkarni","doi":"10.1017/S1539299600016592","DOIUrl":null,"url":null,"abstract":"A unique tool to investigate distant young galaxies is to study the ab- sorption lines they produce in the spectra of background quasars. The damped Lyman- alpha (DLA) quasar absorption line systems allow us to empirically trace galaxy evo- lution. We discuss results of abundance surveys of DLAs and their implications for the evolution of the global metallicity in galaxies. We also describe deep imaging stud- ies with the Hubble Space Telescope (HST) and ground-based facilities, directed at investigating the luminosities and star formation rates of the absorbers. These obser- vations are helping to clarify the absorber-galaxy connection, and shedding light on the evolution of stars and metals in normal galaxies over the past 80% of th'e cosmic history.","PeriodicalId":422890,"journal":{"name":"Highlights of Astronomy","volume":"22 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2003-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Evolution of Metals and Stars in Damped Lyman-Alpha Galaxies\",\"authors\":\"V. Kulkarni\",\"doi\":\"10.1017/S1539299600016592\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A unique tool to investigate distant young galaxies is to study the ab- sorption lines they produce in the spectra of background quasars. The damped Lyman- alpha (DLA) quasar absorption line systems allow us to empirically trace galaxy evo- lution. We discuss results of abundance surveys of DLAs and their implications for the evolution of the global metallicity in galaxies. We also describe deep imaging stud- ies with the Hubble Space Telescope (HST) and ground-based facilities, directed at investigating the luminosities and star formation rates of the absorbers. These obser- vations are helping to clarify the absorber-galaxy connection, and shedding light on the evolution of stars and metals in normal galaxies over the past 80% of th'e cosmic history.\",\"PeriodicalId\":422890,\"journal\":{\"name\":\"Highlights of Astronomy\",\"volume\":\"22 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2003-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Highlights of Astronomy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1017/S1539299600016592\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Highlights of Astronomy","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1017/S1539299600016592","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Evolution of Metals and Stars in Damped Lyman-Alpha Galaxies
A unique tool to investigate distant young galaxies is to study the ab- sorption lines they produce in the spectra of background quasars. The damped Lyman- alpha (DLA) quasar absorption line systems allow us to empirically trace galaxy evo- lution. We discuss results of abundance surveys of DLAs and their implications for the evolution of the global metallicity in galaxies. We also describe deep imaging stud- ies with the Hubble Space Telescope (HST) and ground-based facilities, directed at investigating the luminosities and star formation rates of the absorbers. These obser- vations are helping to clarify the absorber-galaxy connection, and shedding light on the evolution of stars and metals in normal galaxies over the past 80% of th'e cosmic history.
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