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Showing 1 to 3 of 3 for “"Reflection Nebulae"”.
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Multiwavelength Study of Photodissociation Regions and a Near -Infrared Imager
… a far-infrared analysis of the PDRs in several reflection nebulae. We found that the observed line intensities and predicted gas densities fall within the range of the low-density model of Hollenbach, Takahashi & Tielens. We also found that varying the stellar type of the illuminating star has …
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Revisiting polycyclic aromatic hydrocarbon emission in Photodissociation regions
… the PAH behaviour in two well-known Galactic reflection nebulae, NGC 2023 and NGC 7023, using a Principal Component Analysis. We find that the amount of PAH emission, which represents the PAH abundance and excitation, and the PAH charge state are the only two parameters that drive their …
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Mid-Infrared Studies of Galactic sources: Probing the Relationship Between Polycyclic Aromatic Hydrocarbons and their Physical Environment
… and the FIR dust continuum emission of a nearby reflection nebula in combination with PDR models to derive maps of the physical conditions. Comparing these derived physical conditions with PAH emission characteristics at a matching spatial resolution and apertures allows us to critically test …