期刊論文
| 學年 | 112 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2023-10-20 |
| 作品名稱 | The impact of H II regions on giant molecular cloud properties in nearby galaxies sampled by PHANGS ALMA and MUSE |
| 作品名稱（其他語言） | |
| 著者 | Antoine Zakardjian; Jérôme Pety; Cinthya N. Herrera; Annie Hughes; Elias Oakes; Kathryn Kreckel; Chris Faesi; Simon C. O. Glover; Brent Groves; Ralf S. Klessen; Sharon Meidt; Ashley Barnes; Francesco Belfiore; Ivana Bešlić; Frank Bigiel; Guillermo A. Blanc; Mélanie Chevance; Daniel A. Dale; Jakob den Brok; Cosima Eibensteiner; Eric Emsellem; Axel García-Rodríguez; Kathryn Grasha; Eric W. Koch; Adam K. Leroy; Daizhong Liu; Rebecca Mc Elroy; Lukas Neumann; Hsi-An Pan; Miguel Querejeta; Alessandro Razza; Erik Rosolowsky; Toshiki Saito; Francesco Santoro; Eva Schinnerer; Jiayi Sun; Antonio Usero; Elizabeth J. Watkins; Thomas Williams |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Astronomy & Astrophysics 678 |
| 摘要 | Context. The final stages of molecular cloud evolution involve cloud disruption due to feedback by massive stars, with recent literature suggesting the importance of early (i.e., pre-supernova) feedback mechanisms. Aims. We aim to determine whether feedback from massive stars in H II regions has a measurable impact on the physical properties of molecular clouds at a characteristic scale of ~ 100 pc, and whether the imprint of feedback on the molecular gas depends on the local galactic environment. Methods. We identified giant molecular clouds (GMCs) associated with H II regions for a sample of 19 nearby galaxies from catalogs of GMCs and H II regions released by the PHANGS-ALMA and PHANGS-MUSE surveys, using the overlap of the CO and Hα emission as the key criterion for physical association. We compared the distributions of GMC and H II region properties for paired and non-paired objects. We investigated correlations between GMC and H II region properties among galaxies and across different galactic environments to determine whether GMCs that are associated with H II regions have significantly distinct physical properties compared to the parent GMC population. Results. We identify trends between the Hα luminosity of an H II region and the CO peak brightness and molecular mass of GMCs that we tentatively attribute to a direct physical connection between the matched objects, and which arise independently of the underlying environmental variations of GMC and H II region properties within galaxies. The study of the full sample nevertheless hides a large galaxy-to-galaxy variability. Conclusions. At the ~100 pc scales accessed by the PHANGS-ALMA and PHANGS-MUSE data, pre-supernova feedback mechanisms in H II regions have a subtle but measurable impact on the properties of the surrounding molecular gas, as inferred from CO observations. |
| 關鍵字 | HII regions;ISM: clouds;evolution;galaxies: ISM |
| 語言 | en |
| ISSN | 1432-0746; 0004-6361 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | FRA |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/125145 ) |