Details

Autor(en) / Beteiligte

• De Looze, I
• Lamperti, I
• Saintonge, A
• Relaño, M
• Smith, M W L
• Clark, C J R
• Wilson, C D
• Decleir, M
• Jones, A P
• Kennicutt, R C
• Accurso, G
• Brinks, E
• Bureau, M
• Cigan, P
• Clements, D L
• De Vis, P
• Fanciullo, L
• Gao, Y
• Gear, W K
• Ho, L C
• Hwang, H S
• Michałowski, M J
• Lee, J C
• Li, C
• Lin, L
• Liu, T
• Lomaeva, M
• Pan, H-A
• Sargent, M
• Williams, T
• Xiao, T
• Zhu, M

Titel

JINGLE – IV. Dust, H i gas, and metal scaling laws in the local Universe

Ist Teil von

• Monthly notices of the Royal Astronomical Society, 2020-08, Vol.496 (3), p.3668-3687

Ort / Verlag

Oxford University Press

Erscheinungsjahr

2020

Quelle

Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals

Beschreibungen/Notizen

• ABSTRACT Scaling laws of dust, H i gas, and metal mass with stellar mass, specific star formation rate, and metallicity are crucial to our understanding of the build-up of galaxies through their enrichment with metals and dust. In this work, we analyse how the dust and metal content varies with specific gas mass (MH i/M⋆) across a diverse sample of 423 nearby galaxies. The observed trends are interpreted with a set of Dust and Element evolUtion modelS (DEUS) – including stellar dust production, grain growth, and dust destruction – within a Bayesian framework to enable a rigorous search of the multidimensional parameter space. We find that these scaling laws for galaxies with −1.0 ≲ log MH i/M⋆ ≲ 0 can be reproduced using closed-box models with high fractions (37–89 ${{\ \rm per\ cent}}$) of supernova dust surviving a reverse shock, relatively low grain growth efficiencies (ϵ = 30–40), and long dust lifetimes (1–2 Gyr). The models have present-day dust masses with similar contributions from stellar sources (50–80 ${{\ \rm per\ cent}}$) and grain growth (20–50 ${{\ \rm per\ cent}}$). Over the entire lifetime of these galaxies, the contribution from stardust (>90 ${{\ \rm per\ cent}}$) outweighs the fraction of dust grown in the interstellar medium (<10 ${{\ \rm per\ cent}}$). Our results provide an alternative for the chemical evolution models that require extremely low supernova dust production efficiencies and short grain growth time-scales to reproduce local scaling laws, and could help solving the conundrum on whether or not grains can grow efficiently in the interstellar medium.