Y. Solovyeva, A. Kostenkov, E. Dedov, A. Vinokurov
{"title":"Wind parameters of the new LBV in NGC1156","authors":"Y. Solovyeva, A. Kostenkov, E. Dedov, A. Vinokurov","doi":"10.22323/1.425.0049","DOIUrl":null,"url":null,"abstract":"In this work we present the spectrum modeling results for the newly discovered luminous blue variable (LBV) in the NGC 1156 galaxy. Extended atmosphere models were calculated using the non-LTE code CMFGEN. We have obtained the luminosity of the discovered LBV 𝐿 (cid:39) ( 1 . 6 ± 0 . 2 ) × 10 6 𝐿 (cid:12) , effective temperature 𝑇 eff = 7 . 9 ± 0 . 4 kK and mass-loss rate (cid:164) 𝑀 𝑓 − 0 . 5 = ( 8 . 2 ± 1 . 0 ) × 10 − 4 𝑀 (cid:12) yr − 1 . The hydrogen abundance in the wind is ≈ 20 % for the metallicity 𝑍 = 0 . 5 𝑍 (cid:12) of the host galaxy. The Multifaceted Universe: Theory and Observations - 2022 (MUTO2022)","PeriodicalId":355234,"journal":{"name":"Proceedings of The Multifaceted Universe: Theory and Observations - 2022 — PoS(MUTO2022)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of The Multifaceted Universe: Theory and Observations - 2022 — PoS(MUTO2022)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22323/1.425.0049","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In this work we present the spectrum modeling results for the newly discovered luminous blue variable (LBV) in the NGC 1156 galaxy. Extended atmosphere models were calculated using the non-LTE code CMFGEN. We have obtained the luminosity of the discovered LBV 𝐿 (cid:39) ( 1 . 6 ± 0 . 2 ) × 10 6 𝐿 (cid:12) , effective temperature 𝑇 eff = 7 . 9 ± 0 . 4 kK and mass-loss rate (cid:164) 𝑀 𝑓 − 0 . 5 = ( 8 . 2 ± 1 . 0 ) × 10 − 4 𝑀 (cid:12) yr − 1 . The hydrogen abundance in the wind is ≈ 20 % for the metallicity 𝑍 = 0 . 5 𝑍 (cid:12) of the host galaxy. The Multifaceted Universe: Theory and Observations - 2022 (MUTO2022)