text:   the Magellanic Clouds",6,"['Hey interstellar dust fans!  Check out the new paper from UCSD postdoc Jérémy Chastenet on polycyclic aromatic hydrocarbons in the Magellanic Clouds! <LINK>', 'The SMC is has a much smaller fraction of its dust in the form of PAHs compared to the LMC. https://t.co/UGL8QXdAUu', 'HII regions show up as holes in the PAH fraction map.  Even ionized gas in the diffuse ISM seems to have an effect on the PAH population though.', 'And when you separate the Magellanic Clouds up into their ISM phases, you find that the PAH fraction is largest in molecular/diffuse neutral gas and lowest in HII regions.', '@aprilfollies The lower PAH fraction seems to be related to whatever sources produce ionizing radiation to create the HII regions and diffuse ionized gas.', '@dr_paul_woods I don’t think we know for the MW very well, the 4.6% is for the diffuse neutral gas, not the global average. The comparison to full galaxy qpah values from SINGS suggests the LMC global average is pretty normal, but there are galaxies with higher path fractions.']",19,04,1003