Hubble detects protective shield defending a pair of dwarfgalaxies NASA nature
In our Voigt profile fitting process, individual components are initially paired across low ions and high ions based on their approximate centroid velocities. This pairing process is inherently biased, as it assumes that components across ions are physically tied and results in the lowest possible differences in velocity centroids for our analysis.
When considering O VI, we calculate the velocity offset from the closest absorption component in other ions and find that the widths of the velocity-offset distributions have standard deviations ofgreater in width of the distribution of velocity differences between the low ions and C IV matched in the same manner, supporting the result that O VI exists in a different phase.. Differences in paired linewidths do not show statistical significance.
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