Poster Presentation

Features of Dust Attenuation Law in UV and IR Observational Properties for Galaxies

Ye-Wei Mao (PMO), Xu Kong (USTC), and Lin Lin (SHAO)

The correlation between IR-to-UV luminosity ratio and UV color (or UV spectral slope), i.e., the IRX-UV (or IRX-beta) relation, found in studies of starburst galaxies is a prevalent recipe for correcting internal dust attenuation for galaxies. However, considerable deviation in this relation discovered for normal galaxies complicates its usability. As an extension over my previous work investigating influences of stellar population age on the IRX-UV relation, in this talk, I will present my recent study which concentrates on features of dust attenuation law in UV and IR properties for galaxies, and as a consequence provides an interpretation of the deviation in the IRX-UV relation with variations in attenuation law. This research is carried out on the basis of spectral synthesis modeling of stellar population and dust attenuation, and spatially resolved measurements of nearby galaxies .