2026-06-29T02:42:18Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/137502023-08-25T12:15:04Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Tress, M.
author
Ferreras, I.
author
Pérez González, Pablo Guillermo
author
Bressan, A.
author
Barro, G.
author
Domínguez Sánchez, H.
author
Eliche Moral, María del Carmen
2023-06-17T13:33:29Z
2023-06-17T13:33:29Z
2019-09
0035-8711
10.1093/mnras/stz1851
https://hdl.handle.net/20.500.14352/13750
http://dx.doi.org/10.1093/mnras/stz1851
https://academic.oup.com/https://arxiv.org/pdf/1904.10025.pdf
A diverse range of dust attenuation laws is found in star-forming galaxies. In particular, Tress et al. (2018) studied the SHARDS survey to constrain the NUV bump strength (B) and the total-to-selective ratio (R_(V)) of 1,753 star-forming galaxies in the GOODS-N field at 1.5<z<3. We revisit here this sample to assess the implications and possible causes of the correlation found between R_(V) and B. The UVJ bicolour plot and main sequence of star formation are scrutinised to look for clues into the observed trend. The standard boundary between quiescent and star-forming galaxies is preserved when taking into account the wide range of attenuation parameters. However, an additional degeneracy – regarding the effective attenuation law – is added to the standard loci of star-forming galaxies in the UVJ diagram. A simple phenomenological model with an age-dependent extinction (at fixed dust composition) is compatible with the observed trend between R_(V) and B, whereby the opacity decreases with the age of the populations, resulting in a weaker NUV bump when the overall attenuation is shallower (greyer). In addition, we compare the constraints obtained by the SHARDS sample with dust models from the literature, supporting a scenario where geometry could potentially drive the correlation between R_(V) and B.
eng
A deeper look at the dust attenuation law of star-forming galaxies at high redshift
journal article
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https://docta.ucm.es/bitstreams/4b482438-39b8-4a0a-bb77-60b32eb1d5c1/download
File
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a06ce3e6ca0815123c2e0023dd01f9a8
1157015
application/pdf
perezgonzalez182preprint.pdf