Dust evolution in pre-stellar cores

TL;DR

This paper investigates how dust grains evolve within pre-stellar cores, using multi-wavelength observations and introducing a new dust model to better understand the transition from diffuse interstellar medium grains to those near protostars.

Contribution

It presents a novel approach combining NIKA2 observations with the SIGMA dust model to characterize dust evolution in pre-stellar cores.

Findings

NIKA2 maps provide improved constraints on dust properties.

Introduction of the SIGMA dust model as a flexible tool.

Enhanced understanding of dust growth processes in early star formation stages.

Abstract

Dust grains are the building {blocks} of future planets. They evolve in size, shape and composition during the life cycle of the interstellar medium. We seek to understand the process which leads from diffuse medium grains to dust grains in the vicinity of protostars inside disks. As a first step, we propose to characterize the dust evolution inside pre-stellar cores thanks to multi-wavelength observations. We will present how NIKA2 maps are crucial to better constrain dust properties and {we will} introduce SIGMA: a new flexible dust model in open access.