An outflow in the Seyfert ESO 362-G18 revealed by Gemini-GMOS/IFU observations
dc.contributor.author | Humire, Pedro K. | pt_BR |
dc.contributor.author | Nagar, Neil M. | pt_BR |
dc.contributor.author | Finlez, Carolina | pt_BR |
dc.contributor.author | Firpo, Verónica | pt_BR |
dc.contributor.author | Slater, Roy | pt_BR |
dc.contributor.author | Lena, Davide | pt_BR |
dc.contributor.author | Soto-Pinto, Pamela | pt_BR |
dc.contributor.author | Munõz-Vergara, Dania | pt_BR |
dc.contributor.author | Riffel, Rogemar André | pt_BR |
dc.contributor.author | Schmitt, Henrique Roberto | pt_BR |
dc.contributor.author | Kraemer, S. B. | pt_BR |
dc.contributor.author | Müller, Allan Schnorr | pt_BR |
dc.contributor.author | Fischer, Travis C. | pt_BR |
dc.contributor.author | Robinson, Andrew | pt_BR |
dc.contributor.author | Storchi-Bergmann, Thaisa | pt_BR |
dc.contributor.author | Crenshaw, Daniel Michael | pt_BR |
dc.contributor.author | Elvis, Martin | pt_BR |
dc.date.accessioned | 2019-08-28T02:34:06Z | pt_BR |
dc.date.issued | 2018 | pt_BR |
dc.identifier.issn | 0004-6361 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/198442 | pt_BR |
dc.description.abstract | We present two-dimensional stellar and gaseous kinematics of the inner 0.7 × 1.2 kpc2 of the Seyfert 1.5 galaxy ESO 362-G18, derived from optical (4092–7338 Å) spectra obtained with the GMOS integral field spectrograph on the Gemini South telescope at a spatial resolution of ≈170 pc and spectral resolution of 36 km s-¹. ESO 362-G18 is a strongly perturbed galaxy of morphological type Sa or S0/a, with a minor merger approaching along the NE direction. Previous studies have shown that the [O III] emission shows a fan-shaped extension of ≈10′′ to the SE. We detect the [O III] doublet, [N II] and Hα emission lines throughout our field of view. The stellar kinematics is dominated by circular motions in the galaxy plane, with a kinematic position angle of ≈137° and is centred approximately on the continuum peak. The gas kinematics is also dominated by rotation, with kinematic position angles ranging from 122° to 139°, projected velocity amplitudes of the order of 100 km s-¹, and a mean velocity dispersion of 100 km s-¹. A double-Gaussian fit to the [O III]λ5007 and Hα lines, which have the highest signal to noise ratios of the emission lines, reveal two kinematic components: (1) a component at lower radial velocities which we interpret as gas rotating in the galactic disk; and (2) a component with line of sight velocities 100–250 km s-¹ higher than the systemic velocity, interpreted as originating in the outflowing gas within the AGN ionization cone. We estimate a mass outflow rate of 7.4 × 10-² M⊙yr-¹ in the SE ionization cone (this rate doubles if we assume a biconical configuration), and a mass accretion rate on the supermassive black hole (SMBH) of 2.2 × 10−2 M⊙ yr−1. The total ionized gas mass within ~84 pc of the nucleus is 3.3 × 105 M⊙; infall velocities of ~34 km s−1 in this gas would be required to feed both the outflow and SMBH accretion. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Astronomy and astrophysics. Les Ulis. Vol. 614 (June 2018), A94, 16 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Galaxies: active | en |
dc.subject | Galáxias ativas | pt_BR |
dc.subject | Galaxias seyfert | pt_BR |
dc.subject | Galaxies: individual: ESO 362-G18 | en |
dc.subject | Galaxies: Seyfert | en |
dc.subject | Nucleo galatico | pt_BR |
dc.subject | Cinemática estelar | pt_BR |
dc.subject | Galaxies: nuclei | en |
dc.subject | Dinamica estelar | pt_BR |
dc.subject | Galaxies: kinematics and dynamics | en |
dc.title | An outflow in the Seyfert ESO 362-G18 revealed by Gemini-GMOS/IFU observations | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001098748 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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