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

J 2018

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

LAKHCHAURA, K.; Norbert WERNER; M. SUN; R. E. A. CANNING; M. GASPARI et. al.

Základní údaje

Originální název

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

Autoři

LAKHCHAURA, K. (356 Indie); Norbert WERNER (703 Slovensko, garant, domácí); M. SUN (840 Spojené státy); R. E. A. CANNING (826 Velká Británie a Severní Irsko); M. GASPARI (380 Itálie); S.W. ALLEN (826 Velká Británie a Severní Irsko); T. CONNOR (840 Spojené státy); M. DONAHUE (840 Spojené státy) a C. SARAZIN (840 Spojené státy)

Vydání

Monthly Notices of the Royal Astronomical Society, MALDEN, WILEY, 2018, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL URL

Impakt faktor

Impact factor: 5.231

Kód RIV

RIV/00216224:14310/18:00105608

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1093/mnras/sty2565

UT WoS

000454575100018

EID Scopus

2-s2.0-85054708322

Klíčová slova anglicky

galaxies: active; galaxies: evolution; galaxies: formation; X-rays: galaxies

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 10. 11. 2022 12:57, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

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.

Citovat

LAKHCHAURA, K.; Norbert WERNER; M. SUN; R. E. A. CANNING; M. GASPARI; S.W. ALLEN; T. CONNOR; M. DONAHUE a C. SARAZIN. Thermodynamic properties, multiphase gas, and AGN feedback in a large sample of giant ellipticals. Monthly Notices of the Royal Astronomical Society. MALDEN: WILEY, 2018, roč. 481, č. 4, s. 4472-4504. ISSN 0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/sty2565.

@article{1487642,
   author = {Lakhchaura, K. and Werner, Norbert and Sun, M. and Canning, R. E. A. and Gaspari, M. and Allen, S.W. and Connor, T. and Donahue, M. and Sarazin, C.},
   article_location = {MALDEN},
   article_number = {4},
   doi = {http://dx.doi.org/10.1093/mnras/sty2565},
   keywords = {galaxies: active; galaxies: evolution; galaxies: formation; X-rays: galaxies},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {Thermodynamic properties, multiphase gas, and AGN feedback in a large sample of giant ellipticals},
   url = {https://arxiv.org/pdf/1806.00455.pdf},
   volume = {481},
   year = {2018}
}

TY  - JOUR
ID  - 1487642
AU  - Lakhchaura, K. - Werner, Norbert - Sun, M. - Canning, R. E. A. - Gaspari, M. - Allen, S.W. - Connor, T. - Donahue, M. - Sarazin, C.
PY  - 2018
TI  - Thermodynamic properties, multiphase gas, and AGN feedback in a large sample of giant ellipticals
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 481
IS  - 4
SP  - 4472-4504
EP  - 4472-4504
PB  - WILEY
SN  - 00358711
KW  - galaxies: active
KW  - galaxies: evolution
KW  - galaxies: formation
KW  - X-rays: galaxies
UR  - https://arxiv.org/pdf/1806.00455.pdf
N2  - 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.
ER  -

LAKHCHAURA, K.; Norbert WERNER; M. SUN; R. E. A. CANNING; M. GASPARI; S.W. ALLEN; T. CONNOR; M. DONAHUE a C. SARAZIN. Thermodynamic properties, multiphase gas, and AGN feedback in a large sample of giant ellipticals. \textit{Monthly Notices of the Royal Astronomical Society}. MALDEN: WILEY, 2018, roč.~481, č.~4, s.~4472-4504. ISSN~0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/sty2565.

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