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Ram-pressure induced radial inflows of gas to the galaxy centre

Published online by Cambridge University Press:  28 October 2024

Nina Akerman Open the ORCID record for Nina Akerman [Opens in a new window] ,
Stephanie Tonnesen ,
Bianca Maria Poggianti ,
Rory Smith  and
Antonino Marasco
Nina Akerman*
Affiliation:
INAF - Astronomical Observatory of Padova, vicolo dell’Osservatorio 5, IT-35122 Padova, Italy Dipartimento di Fisica e Astronomia ‘Galileo Galilei’, Università di Padova, vicolo dell’Osservatorio 3, IT-35122, Padova, Italy, email: nina.akerman@studenti.unipd.it
Stephanie Tonnesen
Affiliation:
Flatiron Institute, CCA, 162 5th Avenue, New York, NY 10010, USA
Bianca Maria Poggianti
Affiliation:
INAF - Astronomical Observatory of Padova, vicolo dell’Osservatorio 5, IT-35122 Padova, Italy
Rory Smith
Affiliation:
Departamento de Física, Universidad Técnica Federico Santa María, Vicuña Mackenna 3939, San Joaquín, Santiago de Chile
Antonino Marasco
Affiliation:
INAF - Astronomical Observatory of Padova, vicolo dell’Osservatorio 5, IT-35122 Padova, Italy
*
email: nina.akerman@inaf.it
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Abstract

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Ram-pressure stripping (RPS) is a process known to remove gas from satellite galaxies. Recent observational studies have found an increased ratio of active galactic nuclei (AGN) among the population of RPS galaxies compared to regular galaxies in the field. To test whether ram pressure (RP) can trigger an AGN, we perform a suite of hydrodynamical wind-tunnel simulations of a massive (Mstar = 1011 Mȯ) galaxy, with inclusion of star formation, stellar feedback and high resolution up to 39 pc. We find that RP increases the inflow of gas to the galaxy centre, which in turn can result in the enhanced BH accretion, as measured by the Bondi-Hoyle model. We also estimate pressure of outflows from our accretion rates and show that AGN feedback would play an important role on the early stages of stripping, while RP itself is not so strong.

Keywords

galaxies: activegalaxies: evolutionmethods: numerical
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S378: Black Hole Winds at All Scales , December 2023 , pp. 63 - 67
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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