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Supermassive Black Hole feedback in early type galaxies

Published online by Cambridge University Press:  29 March 2021

W. Forman Open the ORCID record for W. Forman [Opens in a new window] ,
C. Jones Open the ORCID record for C. Jones [Opens in a new window] ,
A. Bogdan ,
R. Kraft ,
E. Churazov ,
S. Randall ,
M. Sun ,
E. O’Sullivan ,
J. Vrtilek  and
P. Nulsen
W. Forman
Affiliation:
SAO-CfA, 60 Garden St. Cambridge, MA, USA email: wforman@cfa.harvard.edu
C. Jones
Affiliation:
SAO-CfA, 60 Garden St. Cambridge, MA, USA
A. Bogdan
Affiliation:
SAO-CfA, 60 Garden St. Cambridge, MA, USA
R. Kraft
Affiliation:
SAO-CfA, 60 Garden St. Cambridge, MA, USA
E. Churazov
Affiliation:
Space Research Institute, Profsoyuznaya 84/32, Moscow, Russia Max Planck Institute for Astrophysics, Karl Schwarzschild Strasse 1, Garching, Germany
S. Randall
Affiliation:
SAO-CfA, 60 Garden St. Cambridge, MA, USA
M. Sun
Affiliation:
University of Alabama in Huntsville, 301 Sparkman Drive, Huntsville, Alabama
E. O’Sullivan
Affiliation:
SAO-CfA, 60 Garden St. Cambridge, MA, USA
J. Vrtilek
Affiliation:
SAO-CfA, 60 Garden St. Cambridge, MA, USA
P. Nulsen
Affiliation:
SAO-CfA, 60 Garden St. Cambridge, MA, USA
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Abstract

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Optically luminous early type galaxies host X-ray luminous, hot atmospheres. These hot atmospheres, which we refer to as coronae, undergo the same cooling and feedback processes as are commonly found in their more massive cousins, the gas rich atmospheres of galaxy groups and galaxy clusters. In particular, the hot coronae around galaxies radiatively cool and show cavities in X-ray images that are filled with relativistic plasma originating from jets powered by supermassive black holes (SMBH) at the galaxy centers. We discuss the SMBH feedback using an X-ray survey of early type galaxies carried out using Chandra X-ray Observatory observations. Early type galaxies with coronae very commonly have weak X-ray active nuclei and have associated radio sources. Based on the enthalpy of observed cavities in the coronae, there is sufficient energy to “balance” the observed radiative cooling. There are a very few remarkable examples of optically faint galaxies that are 1) unusually X-ray luminous, 2) have large dark matter halo masses, and 3) have large SMBHs (e.g., NGC4342 and NGC4291). These properties suggest that, in some galaxies, star formation may have been truncated at early times, breaking the simple scaling relations.

Keywords

galaxies: elliptical and lenticularcD X-rays: galaxiesgalaxies: jetsgalaxies: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S359: Galaxy Evolution and Feedback across Different Environments , March 2019 , pp. 119 - 125
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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