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Clouds accreting from the IGM are not able to feed the star formation of low-redshift disc galaxies
Indexado
WoS WOS:001031787300008
Scopus SCOPUS_ID:85166633014
DOI 10.1093/MNRAS/STAD1963
Año 2023
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



Galactic halos accrete material from the intergalactic medium (IGM) and part of this accretion is expected to be in the form of cool (T & SIM; 10(4) K) gas. A signature of this process could reside in the detection of numerous clouds in the circumgalactic medium (CGM). However, whether this material is able to accrete onto the galaxies and feed their star formation or, instead, evaporates into the CGM hot phase (corona, T & SIM; 10(6) K), is not yet understood. Here, we investigate the evolution of cool CGM clouds accreted from the IGM and falling through the hot corona of low-redshift disc galaxies, using 3D high-resolution hydrodynamical simulations. We include the effects of gravity due to the dark matter halo, isotropic thermal conduction, radiative cooling, and an ionizing UV background. We explored different values of parameters such as the halo mass, coronal mass, initial cloud velocity and strength of the thermal conduction. We find that the clouds lose the vast majority of their mass at distances larger than half of the galaxy virial radius and are completely dissolved in the corona before reaching the central galaxy. Resolving the Field length with at least 5-7 cells is crucial to correctly capture the evolution of the infalling cool gas. Our results indicate that cool IGM accretion can not feed star formation in z & SIM; 0 star-forming galaxies in halos with masses of 10(11.9) M-& ODOT; or above. This suggests that present-day massive star-forming galaxies can sustain their star formation only via the spontaneous or induced cooling of their hot corona.

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Disciplinas de Investigación



WOS
Astronomy & Astrophysics
Scopus
Sin Disciplinas
SciELO
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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Afruni, Andrea Mujer Universidad de Chile - Chile
Univ Groningen - Países Bajos
Kapteyn Instituut - Países Bajos
2 Pezzulli, G. Mujer Univ Groningen - Países Bajos
Kapteyn Instituut - Países Bajos
3 Fraternali, F. - Univ Groningen - Países Bajos
Kapteyn Instituut - Países Bajos
4 Grønnow, Asger - Univ Groningen - Países Bajos
Kapteyn Instituut - Países Bajos

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Financiamiento



Fuente
European School of Oncology
Nederlandse Onderzoekschool voor Astronomie
Netherlands Research School for Astronomy (Nederlandse Onderzoekschool voor Astronomie, NOVA)
Joint Committee European Southern Observatory (ESO)-Chile grant
Joint Committee European Southern Observatory

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Agradecimientos



Agradecimiento
The authors would like to thank Lucia Armillotta, for providing the CLOUDY tables that have been used to calculate the gas cooling and heating rates. We are grateful to the anonymous referee for insightful and interesting comments. AA acknowledges the financial support of the Joint Committee European Southern Observatory (ESO)-Chile grant. GP acknowledges support from the Netherlands Research School for Astronomy (Nederlandse Onderzoekschool Voor Astronomie, NOVA). The analysis of the simulation outputs presented in this paper has been done using the YT PYTHON toolkit (Turk et al. 2011 ).
The authors would like to thank Lucia Armillotta, for providing the cloudy tables that have been used to calculate the gas cooling and heating rates. We are grateful to the anonymous referee for insightful and interesting comments. AA acknowledges the financial support of the Joint Committee European Southern Observatory (ESO)-Chile grant. GP acknowledges support from the Netherlands Research School for Astronomy (Nederlandse Onderzoekschool Voor Astronomie, NOVA). The analysis of the simulation outputs presented in this paper has been done using the yt python toolkit (Turk et al. ).

Muestra la fuente de financiamiento declarada en la publicación.