34m谱征: Aliphacity Wavenumber(cm-1) 3100 3000 2900 2800 0.4 34μm谱征起源: Orion Bar: Emission Spectrum(FJ) Aliphatic 0.3 superhydrogenation? Superhydrogenation 340m aliphatic? 347m3.51ms56gm anharmonicity 0.2 二 0.1 Nc,aliph、A3 3.3 N C,arom A 3.3 GCS 3: Optical Depth (TA)k ww(Galactic center source 3 入(um) Phenanthrene Perylene Li Draine(2012)3.4 mm谱征: Aliphacity Li & Draine (2012) 3.4 mm谱征起源： ➢ Aliphatic？ ➢ Superhydrogenation? ➢ Anharmonicity？