Issue |
A&A
Volume 684, April 2024
|
|
---|---|---|
Article Number | A163 | |
Number of page(s) | 8 | |
Section | Interstellar and circumstellar matter | |
DOI | https://doi.org/10.1051/0004-6361/202348024 | |
Published online | 24 April 2024 |
Dust survival in harsh environments
Investigating the relevance of photo-evaporation process
1
National Centre for Nuclear Research,
ul. Pasteura 7,
02-093
Warsaw,
Poland
e-mail: ambra.nanni@ncbj.gov.pl
2
INAF – Osservatorio astronomico d’Abruzzo,
Via Maggini SNC,
64100
Teramo,
Italy
3
INFN – Sezione di Perugia,
Via A. Pascoli SNC,
06123
Perugia,
Italy
4
SISSA,
Via Bonomea 265,
Trieste,
Italy
5
IFPU – Institute for fundamental physics of the Universe,
Via Beirut 2,
34014
Trieste,
Italy
6
Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University,
ul. Słoneczna 36,
60-286
Poznań,
Poland
7
INAF – Osservatorio Astronomico di Padova,
Vicolo dell’Osservatorio 5,
35122
Padova,
Italy
Received:
19
September
2023
Accepted:
24
December
2023
Aims. We investigate the role of photo-evaporation of dust that is exposed to the radiation field of hot young stars and planetary nebulae (PNe) as a possible destruction mechanism of dust grains in the interstellar medium (ISM).
Methods. We estimated photo-evaporation induced by the feedback of individual or clustered young stars, of PNe, and in the presence of a variable radiation field that scales with the interstellar radiation field. For PNe, we investigated the dust photo-evaporation of dust grains already present in the ISM and of those formed in the last phases of the evolution of thermally pulsing asymptotic giant branch (TP-AGB) stars. We included dust photo-evaporation rate in models of dust evolution in galaxies for different assumptions of the dust growth scenario, the dust-to-gas ratios, the star formation histories, and the initial mass functions of the stars.
Results. For all the cases we considered, we found that both photo-evaporation from young stars and from PNe is negligible with respect to other dust-removal processes such as destruction from supernova shocks, astration, and possibly outflow. Grains are stable against photo-evaporation when they are exposed to a radiation field that is up to 107 times the interstellar radiation field.
Conclusions. Dust grains of size ≥0.01 µm are not efficiently destroyed either by photo-evaporation in the presence of a strong radiation field.
Key words: dust, extinction / evolution / galaxies: evolution / galaxies: ISM
© The Authors 2024
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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