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