scholarly journals Emission‐Line Galaxies in the Space Telescope Imaging Spectrograph Parallel Survey. I. Observations and Data Analysis

2003 ◽  
Vol 146 (2) ◽  
pp. 209-248 ◽  
Author(s):  
Harry I. Teplitz ◽  
Nicholas R. Collins ◽  
Jonathan P. Gardner ◽  
Robert S. Hill ◽  
Sara R. Heap ◽  
...  
Keyword(s):  
Data Analysis ◽  
Emission Line ◽  
Space Telescope ◽  
Emission Line Galaxies ◽  
Imaging Spectrograph

Space Telescope Imaging Spectrograph Spectroscopy of the Emission‐Line Gas in the Nuclei of Nearby FR‐I Galaxies

2003 ◽  
Vol 148 (2) ◽  
pp. 419-472 ◽  
Author(s):  
Jacob Noel‐Storr ◽  
Stefi A. Baum ◽  
Gijs Verdoes Kleijn ◽  
Roeland P. van der Marel ◽  
Christopher P. O’Dea ◽  
...  
Keyword(s):  
Emission Line ◽  
Space Telescope ◽  
Imaging Spectrograph

Space Telescope Imaging Spectrograph Long‐Slit Spectroscopy of the Narrow‐Line Region of NGC 4151. I. Kinematics and Emission‐Line Ratios

2000 ◽  
Vol 531 (1) ◽  
pp. 257-277 ◽  
Author(s):  
C. H. Nelson ◽  
D. Weistrop ◽  
J. B. Hutchings ◽  
D. M. Crenshaw ◽  
T. R. Gull ◽  
...  
Keyword(s):  
Emission Line ◽  
Narrow Line ◽  
Space Telescope ◽  
Ngc 4151 ◽  
Line Region ◽  
Narrow Line Region ◽  
Imaging Spectrograph

scholarly journals Space Telescope Imaging Spectrograph Slitless Observations of Small Magellanic Cloud Planetary Nebulae: A Study on Morphology, Emission‐Line Intensity, and Evolution

2003 ◽  
Vol 596 (2) ◽  
pp. 997-1014 ◽  
Author(s):  
Letizia Stanghellini ◽  
Richard A. Shaw ◽  
Bruce Balick ◽  
Max Mutchler ◽  
J. Chris Blades ◽  
...  
Keyword(s):  
Emission Line ◽  
Line Intensity ◽  
Planetary Nebulae ◽  
Magellanic Cloud ◽  
Small Magellanic Cloud ◽  
Space Telescope ◽  
Imaging Spectrograph

scholarly journals The Survey of Nearby Nuclei with the Space Telescope Imaging Spectrograph: Emission‐Line Nuclei atHubble Space TelescopeResolution

2007 ◽  
Vol 654 (1) ◽  
pp. 125-137 ◽  
Author(s):  
Joseph C. Shields ◽  
Hans‐Walter Rix ◽  
Marc Sarzi ◽  
Aaron J. Barth ◽  
Alexei V. Filippenko ◽  
...  
Keyword(s):  
Emission Line ◽  
Space Telescope ◽  
Imaging Spectrograph

scholarly journals OMEGA – OSIRIS Mapping of Emission-line Galaxies in A901/2 – I. Survey description, data analysis, and star formation and AGN activity in the highest density regions

2015 ◽  
Vol 450 (4) ◽  
pp. 4458-4474 ◽  
Author(s):  
Ana L. Chies-Santos ◽  
Bruno Rodríguez del Pino ◽  
Alfonso Aragón-Salamanca ◽  
Steven P. Bamford ◽  
Meghan E. Gray ◽  
...  
Keyword(s):  
Data Analysis ◽  
Star Formation ◽  
Emission Line ◽  
Emission Line Galaxies

HST observations of [O III] emission in nearby QSO2s: Physical properties of the outflows

2020 ◽  
Vol 15 (S359) ◽  
pp. 269-271
Author(s):  
Anna Trindade Falcao ◽  
S. B. Kraemer ◽  
T. C. Fischer ◽  
D. M. Crenshaw ◽  
M. Revalski ◽  
...  
Keyword(s):  
Physical Properties ◽  
Emission Line ◽  
Radial Distance ◽  
Space Telescope ◽  
X Ray ◽  
Medium Resolution ◽  
Mass Outflow ◽  
Imaging Spectrograph

AbstractWe used Space Telescope Imaging Spectrograph (STIS) long slit medium-resolution G430M and G750M spectra to analyze the extended [O III] λ5007 emission in a sample of twelve QSO2s from Reyes et al. (2008). The purpose of the study was to determine the properties of the mass outflows and their role in AGN feedback. We measured fluxes and velocities as functions of deprojected radial distances. Using photoionization models and ionizing luminosities derived from [O III], we were able to estimate the densities for the emission-line gas. From these results, we derived masses, mass outflow rates, kinetic energies and kinetic luminosity rates as a function of radial distance for each of the targets. Masses are several times 103 - 107 solar masses, which are comparable to values determined from a recent photoionization study of Mrk 34 (Revalski). Additionally, we are studying the possible role of X-ray winds in these QSO2s.

scholarly journals Hubble Space Telescope Observations of [O III] Emission in Nearby QSO2s: Physical Properties of the Ionised Outflows

2020 ◽  
Author(s):  
Anna Trindade Falcão ◽  
S B Kraemer ◽  
T C Fischer ◽  
D M Crenshaw ◽  
M Revalski ◽  
...  
Keyword(s):  
Physical Properties ◽  
Emission Line ◽  
Hubble Space Telescope ◽  
Radial Distance ◽  
Flow Rates ◽  
Space Telescope ◽  
Bolometric Luminosity ◽  
Mass Outflow ◽  
Peak Outflow ◽  
Imaging Spectrograph

Abstract We use Hubble Space Telescope (HST)/ Space Telescope Imaging Spectrograph (STIS) long-slit G430M and G750M spectra to analyse the extended [O III] λ5007 emission in a sample of twelve nearby (z >0.12) luminous (Lbol > 1.6 × 1045 erg s−1) QSO2s. The purpose of the study is to determine the properties of the mass outflows of ionised gas and their role in AGN feedback. We measure fluxes and velocities as functions of radial distances. Using Cloudy models and ionising luminosities derived from [O III] λ5007, we are able to estimate the densities for the emission-line gas. From these results, we derive masses of [O III]-emitting gas, mass outflow rates, kinetic energies, kinetic luminosities, momenta and momentum flow rates as a function of radial distance for each of the targets. For the sample, masses are several times 103M⊙ − 107M⊙ and peak outflow rates are 9.3 × 10−3M⊙ yr−1 to 10.3 M⊙ yr−1. The peak kinetic luminosities are 3.4 × 10−8 to 4.9 × 10−4 of the bolometric luminosity, which does not approach the 5.0 × 10−3 - 5.0 × 10−2 range required by some models for efficient feedback. For Mrk 34, which has the largest kinetic luminosity of our sample, in order to produce efficient feedback there would have to be 10 times more [O III]-emitting gas than we detected at its position of maximum kinetic luminosity. Three targets show extended [O III] emission, but compact outflow regions. This may be due to different mass profiles or different evolutionary histories.

scholarly journals Mass outflow of the X-ray emission line gas in NGC 4151

2020 ◽  
Vol 15 (S359) ◽  
pp. 131-135
Author(s):  
S. B. Kraemer ◽  
T. J. Turner ◽  
D. M. Crenshaw ◽  
H. R. Schmitt ◽  
M. Revalski ◽  
...  
Keyword(s):  
Emission Line ◽  
Total Mass ◽  
High Energy ◽  
Model Parameters ◽  
Zeroth Order ◽  
Space Telescope ◽  
X Ray ◽  
Ngc 4151 ◽  
Outflow Rate ◽  
Mass Outflow

AbstractWe have analyzed Chandra/High Energy Transmission Grating spectra of the X-ray emission line gas in the Seyfert galaxy NGC 4151. The zeroth-order spectral images show extended H- and He-like O and Ne, up to a distance r ˜ 200 pc from the nucleus. Using the 1st-order spectra, we measure an average line velocity ˜230 km s–1, suggesting significant outflow of X-ray gas. We generated Cloudy photoionization models to fit the 1st-order spectra; the fit required three distinct emission-line components. To estimate the total mass of ionized gas (M) and the mass outflow rates, we applied the model parameters to fit the zeroth-order emission-line profiles of Ne IX and Ne X. We determined an M ≍ 5.4 × 105Mʘ. Assuming the same kinematic profile as that for the [O III] gas, derived from our analysis of Hubble Space Telescope/Space Telescope Imaging Spectrograph spectra, the peak X-ray mass outflow rate is approximately 1.8 Mʘ yr–1, at r ˜ 150 pc. The total mass and mass outflow rates are similar to those determined using [O III], implying that the X-ray gas is a major outflow component. However, unlike the optical outflows, the X-ray emitting mass outflow rate does not drop off at r > 100pc, which suggests that it may have a greater impact on the host galaxy.

A Study of the [OII]λ3727/Hα Flux Ratio of Emission Line Galaxies

2010 ◽  
Vol 34 (3) ◽  
pp. 234-244 ◽  
Author(s):  
Gao Feng ◽  
Kong Xu ◽  
Lin Xuan-bin ◽  
Zhang Wei ◽  
Li Jun-rong
Keyword(s):  
Emission Line ◽  
Flux Ratio ◽  
Emission Line Galaxies
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