Listar Ciencias Exactas y Naturales por tema "Nucleo galatico"
Mostrando ítems 1-20 de 215
-
A 0.8-2.4 μm spectral atlas of active galactic nuclei
(2006) [Artículo de periódico]Aims. We present a near-infrared spectral atlas of 47 active galactic nuclei (AGN) of all degrees of activity in the wavelength interval of 0.8–2.4 μm, including the fluxes of the observed emission lines. We analyze the ... -
Active galactic nuclei signatures in Red Geyser galaxies from Gemini GMOS-IFU observations
(2022) [Artículo de periódico]Red Geysers are quiescent galaxies with galactic scale ionized outflows, likely due to low-luminosity active galactic nuclei (AGN). We used Gemini GMOS-IFU observations of the inner~1–3 kpc of nine Red Geysers selected ... -
Active galactic nuclei winds as the origin of the H2 emission excess in nearby galaxies
(2020) [Artículo de periódico]In most galaxies, the fluxes of rotational H2 lines strongly correlate with star formation diagnostics [such as polycyclic aromatic hydrocarbons (PAHs)], suggesting that H2 emission from warm molecular gas is a minor ... -
AGNIFS survey of local AGN : GMOS-IFU data and outflows in 30 sources
(2021) [Artículo de periódico]We analyse optical data cubes of the inner kiloparsec of 30 local (z ≤ 0.02) active galactic nucleus (AGN) hosts that our research group, AGNIFS, has collected over the past decade via observations with the integral field ... -
AGN–starburst connection in NGC 7582 : Gemini near-infrared spectrograph integral field unit observations
(2009) [Artículo de periódico]We analyse two-dimensional near-infrared K-band spectra from the inner 660 × 315 pc² of the Seyfert galaxy NGC7582 obtained with the Gemini near-infrared spectrograph integral field unit at a spatial resolution of ≈50 pc ... -
AGN STORM 2 : II. Ultraviolet Observations of Mrk 817 with the Cosmic Origins Spectrograph on the Hubble Space Telescope
(2023) [Artículo de periódico]We present reverberation mapping measurements for the prominent ultraviolet broad emission lines of the active galactic nucleus Mrk 817 using 165 spectra obtained with the Cosmic Origins Spectrograph on the Hubble Space ... -
An atlas of calcium triplet spectra of active galaxies
(2005) [Artículo de periódico]We present a spectroscopic atlas of active galactic nuclei covering the region around the λλ8498, 8542, 8662 calcium triplet (CaT). The sample comprises 78 objects, divided into 43 Seyfert 2s, 26 Seyfert 1s, three starburst ... -
An atlas of Hubble Space Telescope STIS spectra of Seyfert galaxies
(2006) [Artículo de periódico]We present a compilation of spectra of 101 Seyfert galaxies obtained with the Hubble Space Telescope (HST ) Space Telescope Imaging Spectrograph (STIS), covering the UV and/or optical spectral range. Information on all the ... -
An atlas of the circumnuclear regions of 75 Seyfert galaxies in the near-ultraviolet with the Hubble Space Telescope advanced camara for surveys
(2007) [Artículo de periódico]We present an atlas of the central regions of 75 Seyfert galaxies imaged in the near-UV with the Advanced Camera for Surveys of the Hubble Space Telescope at an average resolution of ~10 pc. These data complement archival ... -
An embedded active nucleus in the OH megamaser galaxy IRAS16399-0937
(2015) [Artículo de periódico]We present a multiwavelength study of the OH megamaser galaxy IRAS16399−0937, based on new Hubble Space Telescope (HST)/Advanced Camera for Surveys F814W and Hα+[N ii] images and archive data from HST, Two Micron All Sky ... -
An emission mechanism for extragalactic radio jets
(1996) [Artículo de periódico]The observed emtsswns of radio waves from extragalactic radio jets are customarily interpreted in terms of the incoherent synchrotron radiation produced by a nonthermal population of relativistic electrons (or positrons) ... -
An Hα nuclear spiral structure in the E0 active galaxy Arp 102B
(2011) [Artículo de periódico]We report the discovery of a two-armed mini-spiral structure within the inner kiloparsec of the E0 LINER/Seyfert 1 galaxy Arp 102B. The arms are observed in Hα emission and located east and west of the nucleus, extending ... -
Anisotropic high-excitation emission and chemical abundances in the Seyfert 2 galaxy NGC 5643
(1994) [Artículo de periódico]We present narrow-band images in the lines [O III] λ5007 and Hα(+ [N II] λλ6548, 6584 and long-slit spec troscopy along the bar of the Seyfert 2 galaxy NGC 5643. The continuum subtracted [O III] and Hα( images show that ... -
An outflow in the Seyfert ESO 362-G18 revealed by Gemini-GMOS/IFU observations
(2018) [Artículo de periódico]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 ... -
An outflow perpendicular to the radio jet in the Seyfert nucleus of NGC 5929
(2013) [Artículo de periódico]We report the observation of an outflow perpendicular to the radio jet in near-infrared integral field spectra of the inner 250 pc of the Seyfert 2 galaxy NGC 5929. The observations were obtained with the Gemini Near-infrared ... -
BASS. XXII : the BASS DR2 AGN catalog and data
(2022) [Artículo de periódico]We present the active galactic nucleus (AGN) catalog and optical spectroscopy for the second data release of the Swift BAT AGN Spectroscopic Survey (BASS DR2). With this DR2 release we provide 1449 optical spectra, of which ... -
BASS. XXIV : the BASS DR2 spectroscopic line measurements and AGN demographics
(2022) [Artículo de periódico]We present the second catalog and data release of optical spectral line measurements and active galactic nucleus (AGN) demographics of the BAT AGN Spectroscopic Survey, which focuses on the Swift-BAT hard X-ray detected ... -
BASS. XXIX : the near-infrared view of the broad-line region (BLR) : the effects of obscuration in BLR characterization
(2022) [Artículo de periódico]Virial black hole (BH) mass (MBH) determination directly involves knowing the broad-line region (BLR) clouds' velocity distribution, their distance from the central supermassive BH (RBLR), and the virial factor (f). ... -
BASS. XXVIII : Near-infrared Data Release 2 : high-ionization and broad lines in active galactic nuclei
(2022) [Artículo de periódico]We present the BAT AGN Spectroscopic Survey (BASS) Near-infrared Data Release 2 (DR2), a study of 168 nearby (z¯= 0.04, z < 0.6) active galactic nuclei (AGN) from the all-sky Swift Burst Array Telescope X-ray survey observed ... -
BASS XXXI : outflow scaling relations in low redshift X-ray AGN host galaxies with MUSE
(2022) [Artículo de periódico]Ionized gas kinematics provide crucial evidence of the impact that active galactic nuclei (AGNs) have in regulating star formation in their host galaxies. Although the presence of outflows in AGN host galaxies has been ...
