Dust Attenuation of JWST Massive Star Forming Galaxies at z=5.6: Analysis on Evolution of Dusty Galaxy Environment
Elvia Arum(a), Nathaniella Jeanne Suoth(a), Shafa Raissa Salma(a), Sarah Biddle(b), Itsna K Fitriana(c,d)

a) Astronomy Study Program ITB
b) Center for Astrophysics Harvard
c) National Astronomical Observatory of Japan
d) Faculty of Mathematics and Natural Sciences ITB

Abstract

The surface brightness-inclination relation of galaxies at z ~0.7 (around 6 Gyr after the Big Bang) shows a flatter trend compared to local galaxies, implying higher opacity for galaxies in the younger age of the universe (Sargent et al, 2010). With the advent of JWST, further research can be done for galaxies at the early epoch of the universe. By using JWST NIRCam observations with the F277W filter, we analyze the surface brightness-inclination relation of galaxies in their early formation at z ~5.6 when the universe was around 1 Gyr. We select massive star-forming galaxies from the newly published COSMOS-Web catalogue. We expect to constrain the dust geometry in early disks, whether its opacity speaks for an already complex and clumpy environment, or still in primitive, transparent stages. This research will help illuminate the evolution of dust content and geometry in galaxies over cosmic time, improving our general theory of galaxy evolution.

Keywords: Galaxy- Dust Attenuation- Galaxy Evolution- Opacity

Topic: Galaxies and Cosmology