The ALMaQUEST survey IX: the nature of the resolved star forming main sequence
學年 110
學期 2
出版（發表）日期 2022-03-01
作品名稱 The ALMaQUEST survey IX: the nature of the resolved star forming main sequence
作品名稱（其他語言）
著者 William M Baker; Roberto Maiolino; Asa F L Bluck; Lihwai Lin; Sara L Ellison; Francesco Belfiore; Hsi-An Pan; Mallory Thorp
單位
出版者
著錄名稱、卷期、頁數 Monthly Notices of the Royal Astronomical Society 510(3), p.3622-3628
摘要 We investigate the nature of the scaling relations between the surface density of star formation rate (ΣSFR), stellar mass (Σ*), and molecular gas mass (⁠ΣH2⁠), aiming at distinguishing between the relations that are primary, i.e. more fundamental, and those which are instead an indirect by-product of the other relations. We use the ALMA-MaNGA QUEnching and STar formation survey and analyse the data by using both partial correlations and random forest regression techniques. We unambiguously find that the strongest intrinsic correlation is between ΣSFR and ΣH2 (i.e. the resolved Schmidt–Kennicutt relation), followed by the correlation between ΣH2 and Σ* (resolved molecular gas main sequence, rMGMS). Once these two correlations are taken into account, we find that there is no evidence for any intrinsic correlation between ΣSFR and Σ*, implying that star formation rate (SFR) is entirely driven by the amount of molecular gas, while its dependence on stellar mass (i.e. the resolved star forming main sequence, rSFMS) simply emerges as a consequence of the relationship between molecular gas and stellar mass.
關鍵字 galaxies: evolution;galaxies: formation;galaxies: fundamental parameters;galaxies: star formation
語言 en
ISSN 1365-2966
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 GBR
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/987654321/122452 )