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Thermodynamic properties, multiphase gas, and AGN feedback in a large sample of giant ellipticals

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00105608" target="_blank" >RIV/00216224:14310/18:00105608 - isvavai.cz</a>

  • Result on the web

    <a href="https://arxiv.org/pdf/1806.00455.pdf" target="_blank" >https://arxiv.org/pdf/1806.00455.pdf</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1093/mnras/sty2565" target="_blank" >10.1093/mnras/sty2565</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Thermodynamic properties, multiphase gas, and AGN feedback in a large sample of giant ellipticals

  • Original language description

    We present a study of the thermal structure of the hot X-ray emitting atmospheres for a sample of 49 nearby X-ray and optically bright elliptical galaxies using Chandra X-ray data. We focus on the connection between the properties of the hot X-ray emitting gas and the cooler H alpha+[N II] emitting phase, and the possible role of the latter in the Active Galactic Nuclei (AGN) feedback cycle. We do not find evident correlations between the H alpha+[N II] emission and global properties such as X-ray luminosity, mass of hot gas, and gas mass fraction. We find that the presence of H alpha+[N II] emission is more likely in systems with higher densities, lower entropies, shorter cooling times, shallower entropy profiles, lower values of min(t(cool)/t(ff)), and disturbed X-ray morphologies (linked to turbulent motions). However, we see no clear separations in the observables obtained for galaxies with and without optical emission line nebulae. The AGN jet powers of the galaxies with X-ray cavities show hint of a possible weak positive correlation with their H alpha+[N II] luminosities. This correlation and the observed trends in the thermodynamic propertiesmay result from chaotic cold accretion (CCA) powering AGN jets, as seen in some high-resolution hydrodynamic simulations.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10308 - Astronomy (including astrophysics,space science)

Result continuities

  • Project

  • Continuities

    S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2018

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Monthly Notices of the Royal Astronomical Society

  • ISSN

    0035-8711

  • e-ISSN

  • Volume of the periodical

    481

  • Issue of the periodical within the volume

    4

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    33

  • Pages from-to

    4472-4504

  • UT code for WoS article

    000454575100018

  • EID of the result in the Scopus database

    2-s2.0-85054708322