{"title":"螺旋星系中棒子探测的等等面法研究","authors":"M. Chacón, Rodney Delgado Serrano","doi":"10.1109/IESTEC46403.2019.00025","DOIUrl":null,"url":null,"abstract":"Cosmologically, the stellar bars within the galaxies are recognized as an important internal factor because they redistribute the angular momentum of all the matter in the galaxy. The objective of this work is to compare the results of detection of stellar bars in images constructed by varying the presence of external elements. The group of galaxies used in the present study are: M83 (NGC5236), M66 (NGC3627) and NGC2903. The IRAF ISOPHOTE / ELLIPSE tool is used to perform the analysis of the surface brightness distribution for each galaxy. The structure of a bar can be recognized by a characteristic change of ellipticity (e) and the position angle (P.A.) from the analysis of the isophotes. Finally, we got positive results detecting the central bar in each of the studied galaxies and we found that the results do not depend on the type of the image.","PeriodicalId":388062,"journal":{"name":"2019 7th International Engineering, Sciences and Technology Conference (IESTEC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study about the Bars Detection in Spiral Galaxies Using the Isophotal Method\",\"authors\":\"M. Chacón, Rodney Delgado Serrano\",\"doi\":\"10.1109/IESTEC46403.2019.00025\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Cosmologically, the stellar bars within the galaxies are recognized as an important internal factor because they redistribute the angular momentum of all the matter in the galaxy. The objective of this work is to compare the results of detection of stellar bars in images constructed by varying the presence of external elements. The group of galaxies used in the present study are: M83 (NGC5236), M66 (NGC3627) and NGC2903. The IRAF ISOPHOTE / ELLIPSE tool is used to perform the analysis of the surface brightness distribution for each galaxy. The structure of a bar can be recognized by a characteristic change of ellipticity (e) and the position angle (P.A.) from the analysis of the isophotes. Finally, we got positive results detecting the central bar in each of the studied galaxies and we found that the results do not depend on the type of the image.\",\"PeriodicalId\":388062,\"journal\":{\"name\":\"2019 7th International Engineering, Sciences and Technology Conference (IESTEC)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2019 7th International Engineering, Sciences and Technology Conference (IESTEC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IESTEC46403.2019.00025\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 7th International Engineering, Sciences and Technology Conference (IESTEC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IESTEC46403.2019.00025","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Study about the Bars Detection in Spiral Galaxies Using the Isophotal Method
Cosmologically, the stellar bars within the galaxies are recognized as an important internal factor because they redistribute the angular momentum of all the matter in the galaxy. The objective of this work is to compare the results of detection of stellar bars in images constructed by varying the presence of external elements. The group of galaxies used in the present study are: M83 (NGC5236), M66 (NGC3627) and NGC2903. The IRAF ISOPHOTE / ELLIPSE tool is used to perform the analysis of the surface brightness distribution for each galaxy. The structure of a bar can be recognized by a characteristic change of ellipticity (e) and the position angle (P.A.) from the analysis of the isophotes. Finally, we got positive results detecting the central bar in each of the studied galaxies and we found that the results do not depend on the type of the image.
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