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首页> 外文期刊>The Astrophysical journal >Outflow And Infall In A Sample Of Massive Star Forming Regions. Ii.large-scale Kinematics
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Outflow And Infall In A Sample Of Massive Star Forming Regions. Ii.large-scale Kinematics

机译:大量恒星形成区域的流出和流入。二,大型运动学

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摘要

We present maps of seven sources selected from our previous paper in SiO (J = 8-7) and HCO~+ and H~(13)CO~+ (J = 4-3), which were obtained using H ARP-B on the James Clerk Maxwell Telescope. We find that four out of our seven sources have infall signatures based on their HCO~+ emission profiles. From our maps, we have determined the extent of both the outflowing and infalling regions toward these sources, and constrained the amount of infalling and outflowing mass, as well as the mass infall rate for each massive star forming region. From our SiO observations, we estimate the source luminosity required to shock the surroundings of these massive star forming regions and find luminosities similar to those of the H II regions themselves. We find that the ratio between our infall and outflow masses is less than 1, suggesting high mass entrainment rates in the molecular outflows. We also find that the large-scale molecular infall rate toward G10.6-0.4 is comparable to the small-scale molecular infall rate found in previous studies.
机译:我们提供了从上一论文中选择的SiO(J = 8-7)和HCO〜+和H〜(13)CO〜+(J = 4-3)的七个来源的图,这些图是使用H ARP-B在詹姆斯·克莱克·麦克斯韦望远镜。我们发现,根据其HCO〜+排放曲线,我们七个来源中有四个具有入侵特征。从我们的地图中,我们确定了流入和流出区域朝向这些源的范围,并限制了流入和流出质量的数量以及每个大质量恒星形成区域的质量流入率。根据我们的SiO观测值,我们估计了震撼这些巨大恒星形成区域周围环境所需的源光度,并发现了与H II区本身相似的光度。我们发现流入和流出质量之间的比率小于1,这表明分子流出中的高质量夹带率。我们还发现,向G10.6-0.4的大规模分子入侵率与先前研究中发现的小规模分子入侵率相当。

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