2024
High-spectral-resolution Observations of the Optical Filamentary Nebula Surrounding NGC 1275
VIGNERON, Benjamin, Julie HLAVACEK-LARRONDO, Carter Lee RHEA, Marie-Lou GENDRON-MARSOLAIS, Jeremy LIM et. al.Základní údaje
Originální název
High-spectral-resolution Observations of the Optical Filamentary Nebula Surrounding NGC 1275
Autoři
VIGNERON, Benjamin, Julie HLAVACEK-LARRONDO, Carter Lee RHEA, Marie-Lou GENDRON-MARSOLAIS, Jeremy LIM, Jake REINHEIMER, Yuan LI, Laurent DRISSEN, Greg L. BRYAN, Megan DONAHUE, Alastair EDGE, Andrew FABIAN, Stephen HAMER, Martin THOMAS, Michael MCDONALD, Brian MCNAMARA, Annabelle RICHARD-LAFFERRIERE, Laurie ROUSSEAU-NEPTON, G Mark VOIT, Tracy WEBB a Norbert WERNER (703 Slovensko, domácí)
Vydání
Astrophysical Journal, IOP Publishing Ltd, 2024, 0004-637X
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
Impakt faktor
Impact factor: 4.900 v roce 2022
Organizační jednotka
Přírodovědecká fakulta
UT WoS
001159801700001
Klíčová slova anglicky
AGN host galaxies; Active galaxies; Brightest cluster galaxies; Filamentary nebulae; Perseus Cluster
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 28. 2. 2024 10:22, Mgr. Marie Šípková, DiS.
Anotace
V originále
We present new high-spectral-resolution observations (R = lambda/Delta lambda = 7000) of the filamentary nebula surrounding NGC 1275, the central galaxy of the Perseus cluster. These observations have been obtained with SITELLE, an imaging Fourier transform spectrometer installed on the Canada-France-Hawai Telescope with a field of view of 11 ' x11 ' , encapsulating the entire filamentary structure of ionized gas despite its large size of 80 kpc x 50 kpc. Here, we present renewed fluxes, velocities, and velocity dispersion maps that show in great detail the kinematics of the optical nebula at [S ii] lambda 6716, [S ii] lambda 6731, [N ii] lambda 6584, H alpha (6563 angstrom), and [N ii] lambda 6548. These maps reveal the existence of a bright flattened disk-shaped structure in the core extending to r similar to 10 kpc and dominated by a chaotic velocity field. This structure is located in the wake of X-ray cavities and characterized by a high mean velocity dispersion of 134 km s-1. The disk-shaped structure is surrounded by an extended array of filaments spread out to r similar to 50 kpc that are 10 times fainter in flux, remarkably quiescent, and have a uniform mean velocity dispersion of 44 km s-1. This stability is puzzling given that the cluster core exhibits several energetic phenomena. Based on these results, we argue that there are two mechanisms that form multiphase gas in clusters of galaxies: a first triggered in the wake of X-ray cavities leading to more turbulent multiphase gas and a second, distinct mechanism, that is gentle and leads to large-scale multiphase gas spreading throughout the core.
Návaznosti
GX21-13491X, projekt VaV |
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