In the past few years, we develop a method to estimate the dust attenuation curve of galaxies from full optical spectral fitting. One important advantage of this method is that the estimated dust attenuation curve is independent of the shape of theoretical dust attenuation curves. Based on the method, we investigate the dust attenuation in both stellar populations and ionized gas in kpc-scale regions in nearby galaxies using integral field spectroscopy data from MaNGA. We identify star-forming (H II) and diffuse ionized gas (DIG) regions from MaNGA data cubes, and examine the correlation of stellar attenuation and gas attenuation with galactic regional/global properties. We also investigate the radial dependence of dust attenuation scaling relations and the spatial distribution of DIG.
BIO
Niu Li got his bachelor’s degree from Peking University in 2014, and received his PhD from Tsinghua University in 2020. Then he continues working at Tsinghua University as a postdoc. His researches focus on galaxy formation and evolution, including topics about stellar population synthesis methods, dust attenuation curve, star formation and ionized gas in galaxy.
