{"title":"PAHs and the ISM in Metal-Poor Starbursts","authors":"L. Hunt, Y. Izotov, M. Sauvage, T. Thuan","doi":"10.1051/EAS/1146015","DOIUrl":null,"url":null,"abstract":"We characterize PAH populations in 22 metal-poor blue compact dwarf galaxies (BCDs), 16 of which have an oxygen abundance 12+log(O/H) ≲ 8. This is the largest sample ever studied at such low metallicities. The relative PAH intensities of the 6.2, 7.7, 8.6 and 11.3 μ m features in these BCDs suggest a deficit of small PAH carriers, or alternatively, an excess of large ones at these low abundances.","PeriodicalId":197011,"journal":{"name":"PAHs and the Universe","volume":"68 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"PAHs and the Universe","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1051/EAS/1146015","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
We characterize PAH populations in 22 metal-poor blue compact dwarf galaxies (BCDs), 16 of which have an oxygen abundance 12+log(O/H) ≲ 8. This is the largest sample ever studied at such low metallicities. The relative PAH intensities of the 6.2, 7.7, 8.6 and 11.3 μ m features in these BCDs suggest a deficit of small PAH carriers, or alternatively, an excess of large ones at these low abundances.
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