论文标题
穆斯和阿尔玛的乌里格物理学：彪马四世。冷分子流出速率与AGN亮度之间没有紧密的关系
Physics of ULIRGs with MUSE and ALMA: PUMA IV. No tight relation between cold molecular outflow rates and AGN luminosities
论文作者
论文摘要
我们研究了附近25个样本（z <0.17，d <750 mpc）ulirg系统（38个单个核）的分子流出，作为“与缪斯和阿尔玛的Ulirgs物理学”（PUMA）调查的一部分，使用〜400 pc（0.1-1.0” beam fwhm fhm fwhm）分析ALMA CO（2-1-1-1-1-1-1-1）观察。 300 km/s）与银河系旋转断开了分子气体，我们将其归因于26个核中的77％。 10^7$ $M_{\odot}$, mass outflow rates $\dot{M}_{out}=6-300$ $M_{\odot}$ yr$^{-1}$, mass-loading factors $η= \dot{M}_{out}/SFR = 0.1-1$, and an average outflow mass escape fraction of 45%.这些流出的大多数（18/20）在半径为0.2-0.9 kpc的空间上解决，并且在范围0.5-2.8的范围内，在nuclei pstigtion中，nuctions piction in nucteriations（$ t_ {dyn} = r_ {dyn} = r_ {out}/v_ {out}/v_ {out}/v_ {out} $。 （AGN，6/11 = 55％）垂直于运动轴的轴，我们还发现我们的样本未遵循$ \ dot {m} _ {m} _ {out} _ {out} $ vers。 $ m _ {\ odot} $ yr $^{ - 1} $带有从phangs-alma调查中检测到的分子流出，以增加$ l_ {ir} $ dynamic范围，我们使用这两个样本，我们发现流出速度和sfr之间的相关性。 sfr^{0.25 \ pm0.01}）$，它与原子离子化和中性相位的相关性以及$ m_ {out}/r_ {out} $和$ v_ {out} $之间的关系一致。
We study molecular outflows in a sample of 25 nearby (z< 0.17, d<750 Mpc) ULIRG systems (38 individual nuclei) as part of the "Physics of ULIRGs with MUSE and ALMA" (PUMA) survey, using ~400 pc (0.1-1.0" beam FWHM) resolution ALMA CO(2-1) observations. We used a spectro-astrometry analysis to identify high-velocity (> 300 km/s) molecular gas disconnected from the galaxy rotation, which we attribute to outflows. In 77% of the 26 nuclei with $\log L_{IR}/L_{\odot}>11.8$, we identifid molecular outflows with an average $v_{out}= 490$ km/s, outflow masses $1-35 \times 10^7$ $M_{\odot}$, mass outflow rates $\dot{M}_{out}=6-300$ $M_{\odot}$ yr$^{-1}$, mass-loading factors $η= \dot{M}_{out}/SFR = 0.1-1$, and an average outflow mass escape fraction of 45%. The majority of these outflows (18/20) are spatially resolved with radii of 0.2-0.9 kpc and have short dynamical times ($t_{dyn}=R_{out}/v_{out}$) in the range 0.5-2.8 Myr. The outflow detection rate is higher in nuclei dominated by starbursts (SBs, 14/15=93%) than in active galactic nuclei (AGN, 6/11=55%). Outflows perpendicular to the kinematic major axis are mainly found in interacting SBs. We also find that our sample does not follow the $\dot{M}_{out}$ versus AGN luminosity relation reported in previous works. In our analysis, we include a sample of nearby main-sequence galaxies (SFR = 0.3-17 $M_{\odot}$ yr$^{-1}$) with detected molecular outflows from the PHANGS-ALMA survey to increase the $L_{IR}$ dynamic range. Using these two samples, we find a correlation between the outflow velocity and the SFR, as traced by $L_{IR}$ ($v_{out} \propto SFR^{0.25\pm0.01})$, which is consistent with what was found for the atomic ionised and neutral phases. Using this correlation, and the relation between $M_{out}/R_{out}$ and $v_{out}$, we conclude that these outflows are likely momentum-driven.
