Digging for red nuggets: discovery of hot haloes surrounding
massive, compact, relic galaxies

J 2018

Digging for red nuggets: discovery of hot haloes surrounding massive, compact, relic galaxies

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

Základní údaje

Originální název

Digging for red nuggets: discovery of hot haloes surrounding massive, compact, relic galaxies

Autoři

WERNER, Norbert; K. LAKHCHAURA; R.E.A. CANNING; M. GASPARI a A. SIMIONESCU

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

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/18:00103758

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

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

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 10. 11. 2022 12:32, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

We present the results of Chandra X-ray observations of the isolated, massive, compact, relic galaxies MRK 1216 and PGC 032873. Compact massive galaxies observed at z > 2, also called red nuggets, formed in quick dissipative events and later grew by dry mergers into the local giant ellipticals. Due to the stochastic nature of mergers, a few of the primordial massive galaxies avoided the mergers and remained untouched over cosmic time. We find that the hot atmosphere surrounding MRK 1216 extends far beyond the stellar population and has a 0.5-7 keV X-ray luminosity of L-X = (7.0 +/- 0.2) x 10(41) erg s(-1), which is similar to the nearby X-ray bright giant ellipticals. The hot gas has a short central cooling time of similar to 50 Myr and the galaxy has an similar to 13-Gyr-old stellar population. The presence of an X-ray atmosphere with a short nominal cooling time and the lack of young stars indicate the presence of a sustained heating source, which prevented star formation since the dissipative origin of the galaxy 13 Gyr ago. The central temperature peak and the presence of radio emission in the core of the galaxy indicate that the heating source is radio-mechanical active galactic nucleus (AGN) feedback. Given that both MRK 1216 and PGC 032873 appear to have evolved in isolation, the order of magnitude difference in their current X-ray luminosity could be traced back to a difference in the ferocity of the AGN outbursts in these systems. Finally, we discuss the potential connection between the presence of hot haloes around such massive galaxies and the growth of super-/overmassive black holes via chaotic cold accretion.

Citovat

WERNER, Norbert; K. LAKHCHAURA; R.E.A. CANNING; M. GASPARI a A. SIMIONESCU. Digging for red nuggets: discovery of hot haloes surrounding massive, compact, relic galaxies. Monthly Notices of the Royal Astronomical Society. MALDEN: WILEY, 2018, roč. 477, č. 3, s. 3886-3891. ISSN 0035-8711. Dostupné z: https://doi.org/10.1093/mnras/sty862.

@article{1440016,
   author = {Werner, Norbert and Lakhchaura, K. and Canning, R.E.A. and Gaspari, M. and Simionescu, A.},
   article_location = {MALDEN},
   article_number = {3},
   doi = {https://doi.org/10.1093/mnras/sty862},
   keywords = {galaxies: active; galaxies: evolution; galaxies: formation; X-rays: galaxies},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {Digging for red nuggets: discovery of hot haloes surrounding massive, compact, relic galaxies},
   url = {https://arxiv.org/pdf/1711.09983.pdf},
   volume = {477},
   year = {2018}
}

TY  - JOUR
ID  - 1440016
AU  - Werner, Norbert - Lakhchaura, K. - Canning, R.E.A. - Gaspari, M. - Simionescu, A.
PY  - 2018
TI  - Digging for red nuggets: discovery of hot haloes surrounding massive, compact, relic galaxies
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 477
IS  - 3
SP  - 3886-3891
EP  - 3886-3891
PB  - WILEY
SN  - 00358711
KW  - galaxies: active
KW  - galaxies: evolution
KW  - galaxies: formation
KW  - X-rays: galaxies
UR  - https://arxiv.org/pdf/1711.09983.pdf
N2  - We present the results of Chandra X-ray observations of the isolated, massive, compact, relic galaxies MRK 1216 and PGC 032873. Compact massive galaxies observed at z > 2, also called red nuggets, formed in quick dissipative events and later grew by dry mergers into the local giant ellipticals. Due to the stochastic nature of mergers, a few of the primordial massive galaxies avoided the mergers and remained untouched over cosmic time. We find that the hot atmosphere surrounding MRK 1216 extends far beyond the stellar population and has a 0.5-7 keV X-ray luminosity of L-X = (7.0 +/- 0.2) x 10(41) erg s(-1), which is similar to the nearby X-ray bright giant ellipticals. The hot gas has a short central cooling time of similar to 50 Myr and the galaxy has an similar to 13-Gyr-old stellar population. The presence of an X-ray atmosphere with a short nominal cooling time and the lack of young stars indicate the presence of a sustained heating source, which prevented star formation since the dissipative origin of the galaxy 13 Gyr ago. The central temperature peak and the presence of radio emission in the core of the galaxy indicate that the heating source is radio-mechanical active galactic nucleus (AGN) feedback. Given that both MRK 1216 and PGC 032873 appear to have evolved in isolation, the order of magnitude difference in their current X-ray luminosity could be traced back to a difference in the ferocity of the AGN outbursts in these systems. Finally, we discuss the potential connection between the presence of hot haloes around such massive galaxies and the growth of super-/overmassive black holes via chaotic cold accretion.
ER  -

WERNER, Norbert; K. LAKHCHAURA; R.E.A. CANNING; M. GASPARI a A. SIMIONESCU. Digging for red nuggets: discovery of hot haloes surrounding massive, compact, relic galaxies. \textit{Monthly Notices of the Royal Astronomical Society}. MALDEN: WILEY, 2018, roč.~477, č.~3, s.~3886-3891. ISSN~0035-8711. Dostupné z: https://doi.org/10.1093/mnras/sty862.

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