Search Results - "Abel, N. P"

Deciphering the 3D Orion Nebula-I: Expanding Shells in the Huygens Region by O'Dell, C. R., Abel, N. P., Ferland, G. J.

“…Based on imaging and spectroscopic data, we develop a 3D model for the Huygens Region of the Orion Nebula. Ori C, the hottest star in the Trapezium, is…”
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[Ne V] Emission in Optically Classified Starbursts by Abel, N. P, Satyapal, S

“…Detecting active galactic nuclei (AGNs) in galaxies dominated by powerful nuclear star formation and extinction effects poses a unique challenge. Due to the…”
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The Structure of the Orion Nebula in the Direction of θ1 Ori C by Abel, N. P., Ferland, G. J., O'Dell, C. R.

“…We have used existing optical emission and absorption lines, [C ii] emission lines, and H i absorption lines to create a new model for a central column of…”
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A FAR-INFRARED SPECTRAL SEQUENCE OF GALAXIES: TRENDS AND MODELS by Fischer, Jacqueline, Abel, N P, Gonzalez-Alfonso, E, Dudley, C C, Satyapal, S, VAN HOOF, P A M

“…We present a framework for the interpretation of the far-infrared spectra of galaxies in which we have expanded the model parameters compared with previous…”
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The Incidence of Active Galactic Nuclei in Pure Disk Galaxies: The Spitzer View by Satyapal, S, Böker, T, Mcalpine, W, Gliozzi, M, Abel, N. P, Heckman, T

“…Using the Spitzer telescope, we have conducted a high-resolution spectroscopic study of 18 bulgeless (Hubble type of Sd or Sdm) galaxies that show no…”
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Spitzer Uncovers Active Galactic Nuclei Missed by Optical Surveys in Seven Late-Type Galaxies by Satyapal, S, Vega, D, Dudik, R. P, Abel, N. P, Heckman, T

“…We report the discovery using Spitzer's high-resolution spectrograph of seven active galactic nuclei (AGNs) in a sample of 32 late-type galaxies that show no…”
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Molecular Hydrogen in Star-forming Regions: Implementation of its Microphysics in CLOUDY by Shaw, G, Ferland, G. J, Abel, N. P, Stancil, P. C, van Hoof, P. A. M

“…Much of the baryonic matter in the universe is in the form of H sub(2), which includes most of the gas in Galactic and extragalactic interstellar clouds…”
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A Magnetically Supported Photodissociation Region in M17 by Pellegrini, E. W, Baldwin, J. A, Brogan, C. L, Hanson, M. M, Abel, N. P, Ferland, G. J, Nemala, H. B, Shaw, G, Troland, T. H

“…The southwestern (SW) part of the Galactic H II region M17 contains an obscured ionization front that is most easily seen at infrared and radio wavelengths. It…”
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Sensitivity of PDR Calculations to Microphysical Details by Abel, N. P, Hoof, P. A. M. van, Shaw, G, Ferland, G. J, Elwert, T

“…Our understanding of physical processes in photodissociation regions or photon-dominated regions (PDRs) largely depends on the ability of spectral synthesis…”
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Dust-Bounded Ultraluminous Infrared Galaxies: Model Predictions for Infrared Spectroscopic Surveys by Abel, N. P, Dudley, C, Fischer, Jacqueline, Satyapal, S, van Hoof, P. A. M

“…The observed faintness of infrared fine-structure line emission along with the warm far-infrared (FIR) colors of ultraluminous infrared galaxies (ULIRGs) is a…”
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On the Enhanced Cosmic-Ray Ionization Rate in the Diffuse Cloud toward ζ Persei by Shaw, Gargi, Ferland, G. J, Srianand, R, Abel, N. P, van Hoof, P. A. M, Stancil, P. C

“…The spatial distribution of the cosmic-ray flux is important in understanding the interstellar medium (ISM) of the Galaxy. This distribution can be analyzed by…”
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Tracing the [Fe II]/[Ne II] Ratio and Its Relationship with Other ISM Indicators within Star-forming Dwarf Galaxies: A Spitzer IRS Archival Study by O’Halloran, B, Madden, S. C, Abel, N. P

“…Archival Spitzer observations of 41 starburst galaxies that span a wide range in metallicity reveal for the first time a correlation between the [Fe ii]/[Ne…”
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Optically Thick [O I] and [C II] Emission toward NGC 6334A by Abel, N. P, Sarma, A. P, Troland, T. H, Ferland, G. J

“…This work focuses on [O I] and [C II] emission toward NGC 6334A, an embedded H super(+) region/PDR only observable at infrared or longer wavelengths. A…”
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Physical Conditions in Orion's Veil. II. A Multicomponent Study of the Line of Sight toward the Trapezium by Abel, N. P, Ferland, G. J, O’Dell, C. R, Shaw, G, Troland, T. H

“…Orion's Veil is an absorbing screen that lies along the line of sight to the Orion H II region. It consists of two or more layers of gas that must lie within a…”
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Physical Conditions in Orion's Veil by Abel, N. P, Brogan, C. L, Ferland, G. J, O’Dell, C. R, Shaw, G, Troland, T. H

“…Orion's veil consists of several layers of largely neutral gas lying between us and the main ionizing stars of the Orion Nebula. It is visible in 21 cm H I…”
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Physical Conditions in the Interstellar Medium toward HD 185418 by Shaw, Gargi, Ferland, G. J, Srianand, R, Abel, N. P

“…We have developed a complete model of the hydrogen molecule as part of the spectral simulation code Cloudy. Our goal is to apply this to spectra of…”
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Deciphering the 3D Orion Nebula. II. A Low Ionization Region of Multiple Velocity Components Southwest of θ 1 Ori C Confounds Interpretation of Low Velocity Resolution Studies of Temperature, Density, and Abundance by O’Dell, C. R., Abel, N. P., Ferland, G. J.

“…Abstract We establish that there are two velocity systems along lines of sight that contribute to the emission-line spectrum of the brightest parts of the…”
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Ultraviolet Survey of CO and H2 in Diffuse Molecular Clouds: The Reflection of Two Photochemistry Regimes in Abundance Relationships by Sheffer, Y, Rogers, M, Federman, S. R, Abel, N. P, Gredel, R, Lambert, D. L, Shaw, G

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Deciphering the 3D Orion Nebula. III. Structure on the NE Boundary of the Orion-S Embedded Molecular Cloud by O’Dell, C. R., Abel, N. P., Ferland, G. J.

“…Abstract We have extended the work of Papers I and II of this series to determine at a higher spatial resolution the properties of the embedded Orion-S…”
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Deciphering the 3D Orion Nebula-IV: The HH 269 Flow Emerges from the Orion-S Embedded Molecular Cloud by O’Dell, C. R., Abel, N. P., Ferland, G. J.

“…Abstract We have extended the membership and determined the 3D structure of the large (0.19 pc) HH 269 sequence of shocks in the Orion Nebula. All of the…”
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