Search Results - "Crenshaw, D."
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FEEDBACK FROM MASS OUTFLOWS IN NEARBY ACTIVE GALACTIC NUCLEI. I. ULTRAVIOLET AND X-RAY ABSORBERS
Published in The Astrophysical journal (01-07-2012)“…We present an investigation into the impact of feedback from out-flowing UV and X-ray absorbers in nearby active galactic nuclei (AGNs). From studies of the…”
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BAT AGN Spectroscopic Survey. I. Spectral Measurements, Derived Quantities, and AGN Demographics
Published in The Astrophysical journal (20-11-2017)“…We present the first catalog and data release of the Swift-BAT AGN Spectroscopic Survey. We analyze optical spectra of the majority of the detected AGNs (77%,…”
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The biological stress of early weaned piglets
Published in Journal of animal science and biotechnology (30-04-2013)“…Pigs experience biological stress such as physiological, environmental, and social challenges when weaned from the sow. The process of weaning is one of the…”
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Quantifying Feedback from Narrow Line Region Outflows in Nearby Active Galaxies. I. Spatially Resolved Mass Outflow Rates for the Seyfert 2 Galaxy Markarian 573
Published in The Astrophysical journal (20-03-2018)“…Abstract We present the first spatially resolved mass outflow rate measurements ( ) of the optical emission line gas in the narrow line region (NLR) of a…”
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A REVERBERATION-BASED BLACK HOLE MASS FOR MCG-06-30-15
Published in The Astrophysical journal (20-10-2016)“…ABSTRACT We present the results of a reverberation campaign targeting MGC-06-30-15. Spectrophotometric monitoring and broad-band photometric monitoring over…”
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A Dissection of Spatially Resolved AGN Feedback across the Electromagnetic Spectrum
Published in The Astrophysical journal (20-12-2019)“…We present optical SuperNova Integral Field Spectrograph integral field spectroscopy, Hubble Space Telescope optical imaging, Chandra X-ray imaging, and Very…”
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FEEDBACK FROM MASS OUTFLOWS IN NEARBY ACTIVE GALACTIC NUCLEI. II. OUTFLOWS IN THE NARROW-LINE REGION OF NGC 4151
Published in The Astrophysical journal (20-01-2015)“…We present a detailed study of active galactic nucleus feedback in the narrow-line region (NLR) of the Seyfert 1 galaxy NGC 4151. We illustrate the data and…”
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Radial Velocity Offsets Due to Mass Outflows and Extinction in Active Galactic Nuclei
Published in The Astrophysical journal (01-01-2010)“…We present a study of the radial velocity offsets between narrow emission lines and host galaxy lines (stellar absorption and H I 21 cm emission) in Seyfert…”
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BAT AGN Spectroscopic Survey – III. An observed link between AGN Eddington ratio and narrow-emission-line ratios
Published in Monthly notices of the Royal Astronomical Society (11-01-2017)“…We investigate the observed relationship between black hole mass (M^sub BH^), bolometric luminosity (L^sub bol^) and Eddington ratio (λ^sub Edd^) with optical…”
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GEMINI NEAR INFRARED FIELD SPECTROGRAPH OBSERVATIONS OF THE SEYFERT 2 GALAXY MRK 573: IN SITU ACCELERATION OF IONIZED AND MOLECULAR GAS OFF FUELING FLOWS
Published in The Astrophysical journal (01-01-2017)“…ABSTRACT We present near-infrared and optical emission-line and stellar kinematics of the Seyfert 2 galaxy Mrk 573 using the Near-Infrared Field Spectrograph…”
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Quantifying Feedback from Narrow Line Region Outflows in Nearby Active Galaxies. III. Results for the Seyfert 2 Galaxies Markarian 3, Markarian 78, and NGC 1068
Published in The Astrophysical journal (01-04-2021)“…Outflows of ionized gas driven by active galactic nuclei (AGN) may significantly impact the evolution of their host galaxies. However, determining the…”
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No Small-scale Radio Jets Here: Multiepoch Observations of Radio Continuum Structures in NGC 1068 with the VLBA
Published in The Astrophysical journal (01-08-2023)“…Abstract We present recent Very Long Baseline Array (VLBA) 5 GHz radio observations of the nearby, luminous Seyfert 2 galaxy NGC 1068 for comparison to similar…”
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Determining the Extents, Geometries, and Kinematics of Narrow-line Region Outflows in Nearby Seyfert Galaxies
Published in The Astrophysical journal (01-11-2024)“…Abstract Outflowing gas from supermassive black holes in the centers of active galaxies has been postulated as a major contributor to galactic evolution. To…”
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An Analysis of Active Galactic Nucleus–driven Outflows in the Seyfert 1 Galaxy NGC 3227
Published in The Astrophysical journal (01-08-2024)“…Abstract We have characterized the ionized, neutral, and warm molecular gas kinematics in the Seyfert 1 galaxy NGC 3227 using observations from the Hubble…”
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Quantifying Feedback from Narrow Line Region Outflows in Nearby Active Galaxies. II. Spatially Resolved Mass Outflow Rates for the QSO2 Markarian 34
Published in The Astrophysical journal (10-11-2018)“…Abstract We present spatially resolved mass outflow rate measurements ( ) for the narrow line region of Markarian 34, the nearest Compton-thick type 2 quasar…”
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MASS LOSS FROM THE NUCLEI OF ACTIVE GALAXIES
Published in Annual review of astronomy and astrophysics (01-01-2003)“…Blueshifted absorption lines in the UV and X-ray spectra of active galaxies reveal the presence of massive outflows of ionized gas from their nuclei. The…”
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Hubble Space Telescope Observations of Extended [O iii]λ 5007 Emission in Nearby QSO2s: New Constraints on AGN Host Galaxy Interaction
Published in The Astrophysical journal (01-04-2018)“…We present a Hubble Space Telescope survey of extended [O iii] λ5007 emission for a sample of 12 nearby (z < 0.12), luminous Type 2 quasars (QSO2s), which we…”
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Investigating the Narrow-line Region Dynamics in Nearby Active Galaxies
Published in The Astrophysical journal (01-02-2023)“…Abstract We present dynamical models of the narrow-line region (NLR) outflows in the nearby Seyfert galaxies Mrk 3, Mrk 78, NGC 1068, and NGC 4151 using…”
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A UFO Seen Edge-on? Resolving Ultrafast Outflow Emission on ∼200 pc Scales with Chandra in the Active Nucleus of Mrk 34
Published in The Astrophysical journal (01-07-2023)“…Abstract We present Chandra ACIS imaging spectroscopy of the nucleus of the Seyfert 2 Galaxy Mrk 34. We identify spatially and spectrally resolved features in…”
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Outflows in the narrow-line region of bright Seyfert galaxies – I. GMOS-IFU data
Published in Monthly notices of the Royal Astronomical Society (11-05-2018)“…Abstract We present two-dimensional maps of emission-line fluxes and kinematics, as well as of the stellar kinematics of the central few kpc of five bright…”
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