Physical parameters for the Orion fibers

Table with the physical properties determined for the 152 velocity-coherent fibers identified in the EMERGE Early ALMA Survey. The latter is a sample of 7 star-forming regions in Orion homogeneously surveyed with ALMA in N2H+ (1-0) at 4.5". The raw data was reduced with a uniform analysis using a combinaiton of custom spectral fitting routines, the identification algorithm in the PPV plane HIFIVe (Hacar et al. 2018) and the radial profile fitting routine FilChap (Suri et al. 2019). The header of the table includes the following parameters: ID: fiber identification number within the region assigned by HIFIVe during the identification process; x0, y0: average x-y coordinates of the fiber with respect to the reference pixel in the datacube [unit: '']; dV, sd_dV: median velocity dispersion (as FWHM of the spectral line) and corresponding standard deviation across the structure [unit: km s-1]; sNT, sd_sNT: median non-thermal dispersion (in units of the sound speed) and corresponding standard deviation across the structure; Vlsr, sd_Vlsr: median centroid velocity and corresponding standard deviation across the structure [unit: km s-1]; Mass: total mass of the strcuture [unit: Msun]; points: number of fields associated to the structure; Tk: median kinetic temperature of the structure [unit: K]; L: length of the structure [unit: pc]; AR: aspect ratio (computed as L / FWHM); gradVx: median centroid velocity gradient along the axis knots [unit: km s-1 pc-1]; ML: line mass of the fiber (computed as M / L) [unit: Msun pc-1]; lgrad: mean velocity gradient across the whole axis length [unit: km s-1 pc-1]; P: number of protostars associated to the structure; source: region in which the fiber was identified; FWHM: fiber width as derived from the fitting of its column density radial profile [unit: pc]; N0: fiber peak column density as derived from the fitting of its column density radial profile [unit: cm-2]; gradT: temperature gradient determined around the fiber axis [unit: K pc-1].本数据表包含EMERGE早期ALMA巡天中识别出的152条速度相干纤维结构的物理属性测量结果。 该巡天样本涵盖猎户座内7个恒星形成区，采用阿塔卡马大型毫米波/亚毫米波阵列（ALMA）以4.5角秒的分辨率对N₂H⁺(1-0)谱线开展了均匀巡天观测。 原始数据通过统一分析流程进行归算处理，结合了定制化光谱拟合程序、PPV（位置-速度）平面识别算法HIFIVe（Hacar等，2018）以及径向轮廓拟合程序FilChap（Suri等，2019）。 该数据表的表头包含以下参数： 1. ID：由HIFIVe在识别过程中为所属区域分配的纤维识别编号； 2. x0, y0：纤维相对于数据立方体（datacube）参考像素的平均x-y坐标 [单位：角秒（''）]； 3. dV, sd_dV：结构整体的中位速度弥散（以谱线半高全宽（FWHM）表征）及其对应标准差 [单位：km s⁻¹]； 4. sNT, sd_sNT：结构整体的中位非热弥散（以声速为单位）及其对应标准差； 5. Vlsr, sd_Vlsr：结构整体的中位局域标准静止系速度及其对应标准差 [单位：km s⁻¹]； 6. Mass：结构总质量 [单位：太阳质量（Msun）]； 7. points：关联至该结构的视场数量； 8. Tk：结构整体的中位运动学温度 [单位：开尔文（K）]； 9. L：结构长度 [单位：秒差距（pc）]； 10. AR：长径比（定义为L / FWHM）； 11. gradVx：沿结构轴节的中位中心速度梯度 [单位：km s⁻¹ pc⁻¹]； 12. ML：纤维的线质量（定义为M / L） [单位：太阳质量每秒差距（Msun pc⁻¹）]； 13. lgrad：沿整个轴长的平均速度梯度 [单位：km s⁻¹ pc⁻¹]； 14. P：关联至该结构的原恒星数量； 15. source：纤维被识别出的所在区域； 16. FWHM：由柱密度径向轮廓拟合得到的纤维半高全宽（FWHM） [单位：秒差距（pc）]； 17. N0：由柱密度径向轮廓拟合得到的纤维峰值柱密度 [单位：cm⁻²]； 18. gradT：纤维轴周围的温度梯度 [单位：开尔文每秒差距（K pc⁻¹）]。