• Man, Allison
• Lapi, A.
• Małek, K.
• Liu, D.
• Pantoni, L.
• Narayanan, D.
• Davé, R.
• Pearson, W.
• Feltre, A.
• Fujimoto, S.
• Li, Q.
• Kraljic, K.
• Gómez-Guijarro, C.
• Donevski, Darko

Abstract

The dust-to-stellar mass ratio ($M_{ dust}$/$M_$) is a crucial yet poorly constrained quantity to understand the production mechanisms of dust, metals and stars in galaxy evolution. In this work we explore and interpret the nature of $M_{ dust}$/$M_$ in 300 massive ($M_>10^{10}M_$), dusty star-forming galaxies detected with ALMA up to $z$. We find that $M_{ dust}$/$M_$ evolves with redshift, stellar mass, specific SFR and integrated dust size, differently for main sequence and starburst galaxies. In both galaxy populations $M_{ dust}$/$M_$ rises until $z$ followed by a roughly flat trend towards higher redshifts. We show that the inverse relation between $M_{ dust}$/$M_$ and $M_$ holds up to $z$ and can be interpreted as an evolutionary transition from early to late starburst phases. We demonstrate that $M_{ dust}$/$M_$ in starbursts mirrors the increase in molecular gas fraction with redshift, and is enhanced in objects with the most compact dusty star-formation. The state-of-the-art cosmological simulation SIMBA broadly matches the evolution of $M_{ dust}$/$M_$ in main sequence galaxies, but underestimates it in starbursts. The latter is found to be linked to lower gas-phase metallicities and longer dust growth timescales relative to data. Our data are well reproduced by analytical model that includes recipes for rapid metal enrichment, strongly suggesting that high $M_{ dust}$/$M_$ is due to fast grain growth in metal enriched ISM. Our work highlights multifold benefits of using $M_{ dust}$/$M_$ as a diagnostic tool for: (1) separating main sequence and starburst galaxies until $z$; (2) probing the evolutionary phases of dusty galaxies, and (3) refining the treatment of dust life cycle in simulations....

Topics

• impedance spectroscopy
• grain
• phase
• simulation
• forming
• grain growth