Physical parameters for the Orion fibers

<p>Table with the physical properties determined for the 152 velocity-coherent fibers identified in the EMERGE Early ALMA Survey.</p> <p>The latter is a sample of 7 star-forming regions in Orion homogeneously surveyed with ALMA in N2H+ (1-0) at 4.5".</p> <p>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).</p> <p>The header of the table includes the following parameters:</p> <ul> <li>ID: fiber identification number within the region assigned by HIFIVe during the identification process;</li> <li>x0, y0: average x-y coordinates of the fiber with respect to the reference pixel in the datacube [unit: ''];</li> <li>dV, sd_dV: median velocity dispersion (as FWHM of the spectral line) and corresponding standard deviation across the structure [unit: km s-1];</li> <li>sNT, sd_sNT: median non-thermal dispersion (in units of the sound speed) and corresponding standard deviation across the structure;</li> <li>Vlsr, sd_Vlsr: median centroid velocity and corresponding standard deviation across the structure [unit: km s-1];</li> <li>Mass: total mass of the strcuture [unit: Msun];</li> <li>points: number of fields associated to the structure;</li> <li>Tk: median kinetic temperature of the structure [unit: K];</li> <li>L: length of the structure [unit: pc];</li> <li>AR: aspect ratio (computed as L / FWHM);</li> <li>gradVx: median centroid velocity gradient along the axis knots [unit: km s-1 pc-1];</li> <li>ML: line mass of the fiber (computed as M / L) [unit: Msun pc-1];</li> <li>lgrad: mean velocity gradient across the whole axis length [unit: km s-1 pc-1];</li> <li>P: number of protostars associated to the structure;</li> <li>source: region in which the fiber was identified;</li> <li>FWHM: fiber width as derived from the fitting of its column density radial profile [unit: pc];</li> <li>N0: fiber peak column density as derived from the fitting of its column density radial profile [unit: cm-2];</li> <li>gradT: temperature gradient determined around the fiber axis [unit: K pc-1].&nbsp;</li> </ul>