Balmer Decrement and IRX Break in Tracing Dust Attenuation at Scales of Individual Star-forming Regions in NGC 628

Man Qiao, Mingfeng Liu, Zongfei Lyu +10

We investigate the relationships between infrared excess (IRX=$L_{\mathrm{IR}}/L_{\mathrm{UV}}$) and Balmer decrement ($\mathrm{H}\alpha /\mathrm{H}\beta$) as indicators of dust attenuation for 609 ${\rm {H…