发表机构
University of Lancashire; University College London（兰开夏大学; 伦敦大学学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
利用JCMT BISTRO巡天数据研究鹰状星云M16中“尖塔”和SFO30的磁场，通过DCF方法计算场强并比较各能量，发现磁场支撑与坍缩能量近似均分，支持磁场延长柱状结构寿命的假说。
AI 中文摘要
我们利用詹姆斯·克拉克·麦克斯韦望远镜（JCMT）的恒星形成区磁场（BISTRO）巡天数据，对鹰状星云（M16）中的磁场（B场）进行了研究。我们将先前对星云中著名的“创生之柱”区域的研究扩展到了该区域的其他两个结构：“尖塔”和被称为“SFO30”的亮缘云（BRC）。这些结构显示出与创生之柱相似的磁场形态。我们使用Davis-Chandrasekhar-Fermi（DCF）方法计算了磁场强度，并据此估计了每个区域中的磁势能，以便与当地的引力能、湍动能和热能，以及附近O型星激波的压力能进行比较。我们发现，支撑这些区域的能量与倾向于使区域坍缩的能量之间近似处于均分状态，其中磁场支撑起着重要作用。这与我们早先的假设一致，即磁场有助于支撑分子云中的柱状结构，并使它们比原本存在的时间更长。
英文摘要
We present a study of the magnetic field (B-field) in the Eagle Nebula (M16) using data from the James Clerk Maxwell Telescope (JCMT) B-fields In STar-forming Region Observations (BISTRO) survey. We extend our previous study of the well-known `Pillars of Creation' region of the nebula to study two other structures in the region, the `Spire' and the bright-rimmed cloud (BRC) known as `SFO30'. These structures show similar B-field morphologies to the Pillars. We calculate B-field strengths using the Davis-Chandrasekhar-Fermi (DCF) method and thereby estimate the magnetic potential energy in each of these regions for comparison with the local gravitational, turbulent and thermal energies, as well as the pressure energy of the shocks from nearby O-type stars. We find approximate equipartition between the energies supporting the regions and those tending towards collapse, with the B-field support playing a significant role. This agrees with our earlier hypothesis that B-fields help support pillar-like structures in molecular clouds and make them longer-lived than they would otherwise have been.
Comments6 pages, 2 figures, 2 tables. Accepted for publication in MNRAS
Journal refMNRAS, 551, stag1646 (2026)
