Effects of dust sources on dust attenuation properties in IllustrisTNG galaxies at z ∼ 7
- Author
- Yuan-Ming Hsu, Hiroyuki Hirashita, Yen-Hsing Lin, Peter Camps (UGent) and Maarten Baes (UGent)
- Organization
- Abstract
- Dust emission from high-redshift galaxies gives us a clue to the origin and evolution of dust in the early Universe. Previous studies have shown that different sources of dust (stellar dust production and dust growth in dense clouds) predict different ultraviolet (UV) extinction curves for galaxies at z ~ 7 but that the observed attenuation curves depend strongly on the geometry of dust and star distributions. Thus, we perform radiative transfer calculations under the dust-star geometries computed by a cosmological hydrodynamic simulation (IllustrisTNG). This serves to investigate the dust attenuation curves predicted from 'realistic' geometries. We choose objects with stellar mass and star formation rate appropriate for Lyman break galaxies at z ~ 7. We find that the attenuation curves are very different from the original extinction curves in most of the galaxies. This makes it difficult to constrain the dominant dust sources from the observed attenuation curves. We further include infrared dust emission in the analysis and plot the infrared excess (IRX)-UV spectral slope (β) diagram. We find that different sources of dust cause different IRX-β relations for the simulated galaxies. In particular, if dust growth is the main source of dust, a variation of dust-to-metal ratio causes a more extended sequence with smaller IRX in the IRX-β diagram. Thus, the comprehensive analysis of the abundance of dust and metals, the UV slope, and the dust emission could provide a clue to the dominant dust sources in the Universe.
- Keywords
- radiative transfer, methods: numerical, dust, extinction, galaxies: evolution, galaxies: high-redshift, galaxies: ISM
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01GQF2M67RDQBW64ABYSWVT60P
- MLA
- Hsu, Yuan-Ming, et al. “Effects of Dust Sources on Dust Attenuation Properties in IllustrisTNG Galaxies at z ∼ 7.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 519, no. 2, Oxford University Press (OUP), 2023, pp. 2475–85, doi:10.1093/mnras/stac3666.
- APA
- Hsu, Y.-M., Hirashita, H., Lin, Y.-H., Camps, P., & Baes, M. (2023). Effects of dust sources on dust attenuation properties in IllustrisTNG galaxies at z ∼ 7. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 519(2), 2475–2485. https://doi.org/10.1093/mnras/stac3666
- Chicago author-date
- Hsu, Yuan-Ming, Hiroyuki Hirashita, Yen-Hsing Lin, Peter Camps, and Maarten Baes. 2023. “Effects of Dust Sources on Dust Attenuation Properties in IllustrisTNG Galaxies at z ∼ 7.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 519 (2): 2475–85. https://doi.org/10.1093/mnras/stac3666.
- Chicago author-date (all authors)
- Hsu, Yuan-Ming, Hiroyuki Hirashita, Yen-Hsing Lin, Peter Camps, and Maarten Baes. 2023. “Effects of Dust Sources on Dust Attenuation Properties in IllustrisTNG Galaxies at z ∼ 7.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 519 (2): 2475–2485. doi:10.1093/mnras/stac3666.
- Vancouver
- 1.Hsu Y-M, Hirashita H, Lin Y-H, Camps P, Baes M. Effects of dust sources on dust attenuation properties in IllustrisTNG galaxies at z ∼ 7. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2023;519(2):2475–85.
- IEEE
- [1]Y.-M. Hsu, H. Hirashita, Y.-H. Lin, P. Camps, and M. Baes, “Effects of dust sources on dust attenuation properties in IllustrisTNG galaxies at z ∼ 7,” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 519, no. 2, pp. 2475–2485, 2023.
@article{01GQF2M67RDQBW64ABYSWVT60P,
abstract = {{Dust emission from high-redshift galaxies gives us a clue to the origin and evolution of dust in the early Universe. Previous studies have shown that different sources of dust (stellar dust production and dust growth in dense clouds) predict different ultraviolet (UV) extinction curves for galaxies at z ~ 7 but that the observed attenuation curves depend strongly on the geometry of dust and star distributions. Thus, we perform radiative transfer calculations under the dust-star geometries computed by a cosmological hydrodynamic simulation (IllustrisTNG). This serves to investigate the dust attenuation curves predicted from 'realistic' geometries. We choose objects with stellar mass and star formation rate appropriate for Lyman break galaxies at z ~ 7. We find that the attenuation curves are very different from the original extinction curves in most of the galaxies. This makes it difficult to constrain the dominant dust sources from the observed attenuation curves. We further include infrared dust emission in the analysis and plot the infrared excess (IRX)-UV spectral slope (β) diagram. We find that different sources of dust cause different IRX-β relations for the simulated galaxies. In particular, if dust growth is the main source of dust, a variation of dust-to-metal ratio causes a more extended sequence with smaller IRX in the IRX-β diagram. Thus, the comprehensive analysis of the abundance of dust and metals, the UV slope, and the dust emission could provide a clue to the dominant dust sources in the Universe.}},
author = {{Hsu, Yuan-Ming and Hirashita, Hiroyuki and Lin, Yen-Hsing and Camps, Peter and Baes, Maarten}},
issn = {{0035-8711}},
journal = {{MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY}},
keywords = {{radiative transfer,methods: numerical,dust,extinction,galaxies: evolution,galaxies: high-redshift,galaxies: ISM}},
language = {{eng}},
number = {{2}},
pages = {{2475--2485}},
publisher = {{Oxford University Press (OUP)}},
title = {{Effects of dust sources on dust attenuation properties in IllustrisTNG galaxies at z ∼ 7}},
url = {{http://doi.org/10.1093/mnras/stac3666}},
volume = {{519}},
year = {{2023}},
}
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