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Where does galactic dust come from?
- Publication Year :
- 2018
-
Abstract
- Here we investigate the origin of the dust mass (Mdust) observed in the Milky Way (MW) and of dust scaling relations found in a sample of local galaxies from the DGS and KINGFISH surveys. To this aim, we model dust production from Asymptotic Giant Branch (AGB) stars and supernovae (SNe) in simulated galaxies forming along the assembly of a Milky Way-like halo in a well resolved cosmic volume of 4cMpc using the GAMESH pipeline. We explore the impact of different sets of metallicity and mass-dependent AGB and SN dust yields on the predicted Mdust. Our results show that models accounting for grain destruction by the SN reverse shock predict a total dust mass in the MW that is a factor of ~4 lower than observed, and can not reproduce the observed galaxy-scale relations between dust and stellar masses, and dust-to-gas ratios and metallicity, with a smaller discrepancy in galaxies with low metallicity (12 + log(O/H) < 7.5) and low stellar masses (Mstar < 10^7 Msun). In agreement with previous studies, we suggest that competing processes in the interstellar medium must be at play to explain the observed trends. Our result reinforces this conclusion by showing that it holds independently of the adopted AGB and SN dust yields.<br />6 pages, 4 figures. Accepted version for publication in MNRAS
- Subjects :
- stars: AGB and post-AGB
supernovae: general
dust, extinction
local interstellar matter
galaxies: evolution
Milky Way
Metallicity
Extinction (astronomy)
FOS: Physical sciences
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
0103 physical sciences
Asymptotic giant branch
Astrophysics::Solar and Stellar Astrophysics
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Physics
extinction
010308 nuclear & particles physics
Astronomy
Astronomy and Astrophysics
Astrophysics - Astrophysics of Galaxies
Dust lane
Galaxy
Interstellar medium
Supernova
Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
dust
Astrophysics::Earth and Planetary Astrophysics
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....900544c786bfe2bd77675f79102fea7a