Dust Grain Growth at High Redshift: Starburst-driven CMB-Dark Supershells

Abstract

We present a novel scenario for the growth of dust grains in galaxies at high-redshift ($z\sim 6$). In our model, the mechanical feedback from massive star clusters evolving within high-density pre-enriched media allows to pile-up a large amount of matter into massive supershells. If the gas metallicity ($\ge$ Z${}_{\odot }$), number density ($\ge 10^6$ cm${}^{-3}$) and dust-to-gas mass ratio ($\sim 1/150\times Z$) within the supershell are sufficiently large, such supershells may become optically thick to the starlight emerging from their host star clusters and even to radiation from the Cosmic Microwave Background (CMB). Based on semi-analytic models, we argue that this mechanism, occurring in the case of massive ($\ge 10^7$ M${}_{\odot }$) molecular clouds hosting $\ge 10^6$ M${}_{\odot }$ star clusters, allows a large mass of gas and dust to acquire a temperature below that of the CMB, whereupon dust grain growth may occur with ease. In galaxies with total stellar mass $M_{\ast }$, grain growth within supershells may increase the dust mass by $\sim 10^6$ M${}_{\odot }$ $(M_{\ast }/10^8$ M${}_{\odot }$).

10 pages, 7 figures, accepted for publication by MNRAS

References in corpus (18)

• Evolution of interstellar dust and stardust in the solar neighbourhood
• Dust in the reionization era: ALMA observations of a $z$=8.38 Galaxy
• Gemini Near-infrared Spectroscopy of Luminous z~6 Quasars: Chemical Abundances, Black Hole Masses, and MgII Absorption
• The cycle of interstellar dust in galaxies of different morphological types
• The influence of residual gas expulsion on the evolution of the Galactic globular cluster system and the origin of the Population II halo
• Dust production scenarios in galaxies at z ~ 6-8.3
• The Physical Conditions in a Pre Super Star Cluster Molecular Cloud in the Antennae Galaxies
• Modeling the Anomalous Microwave Emission with Spinning Nanoparticles: No PAHs Required
• Star Cluster Catalogs for the LEGUS Dwarf Galaxies
• Time Varying Dynamical Star Formation Rate
• Supernova feedback and the energy deposition in molecular clouds
• Globular Cluster Formation at High Density: A model for Elemental Enrichment with Fast Recycling of Massive-Star Debris
• AGN-stimulated Cooling of Hot Gas in Elliptical Galaxies
• Supernovae within Pre-existing Wind-Blown Bubbles: Dust Injection vs. Ambient Dust Destruction
• Numerical Simulations of Turbulent Molecular Clouds Regulated by Radiation Feedback Forces II: Radiation-Gas Interactions and Outflows
• On the impact of radiation pressure on the dynamics and inner structure of dusty wind-driven shells
• From flux to dust mass: Does the grain-temperature distribution matter for estimates of cold dust masses in supernova remnants?
• Can Dust Injected by SNe Explain the NIR-MIR Excess in Young Massive Stellar Clusters?

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