Search Results - "Federman, S. R"

A Reexamination of Phosphorus and Chlorine Depletions in the Diffuse Interstellar Medium by Ritchey, Adam M., Brown, J. M., Federman, S. R., Sonnentrucker, Paule

“…Abstract We present a comprehensive examination of interstellar P and Cl abundances based on an analysis of archival spectra acquired with the Space Telescope…”
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The Distribution of Metallicities in the Local Galactic Interstellar Medium by Ritchey, Adam M., Jenkins, Edward B., Shull, J. Michael, Savage, Blair D., Federman, S. R., Lambert, David L.

“…Abstract In this investigation, we present an analysis of the metallicity distribution that pertains to neutral gas in the local Galactic interstellar medium…”
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ULTRAVIOLET MEASUREMENTS OF INTERSTELLAR C2 by HUPE, Ryan C, SHEFFER, Y, FEDERMAN, S. R

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Cloud Structure and Physical Conditions in Star-forming Regions from Optical Observations. II. Analysis by Pan, K, Federman, S. R, Sheffer, Y, Andersson, B-G

“…To complement the optical absorption line survey of diffuse molecular gas in Paper I, we obtained and analyzed far-ultraviolet H sub(2) and CO data on lines of…”
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Comment on "Experimental test of self-shielding in vacuum ultraviolet photodissociation of CO" by Federman, S R, Young, E D

“…Chakraborty et al. (Reports, 5 September 2008, p. 1328) suggested that experimental results provide support for CO photodissociation having caused the oxygen…”
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A refined search for high-velocity gas in the Cygnus Loop supernova remnant by Ritchey, Adam M, Federman, S R, Lambert, David L

“…ABSTRACT We present the results of a sensitive search for high-velocity gas in interstellar absorption lines associated with the Cygnus Loop supernova remnant…”
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Rubidium in the Interstellar Medium by Walker, Kyle M, Federman, S. R, Knauth, David C, Lambert, David L

“…We present observations of interstellar rubidium toward o Per, Delta *z Per, AE Aur, HD 147889, Delta *y Oph, Delta *z Oph, and 20 Aql. Theory suggests that…”
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Diffuse Atomic and Molecular Gas Near IC 443 by Hirschauer, A, Federman, S. R, Wallerstein, George, Means, T

“…We present an analysis of results on absorption from Ca II, Ca I, K I, and the molecules CH+, CH, C2, and CN that probes gas interacting with the supernova…”
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Runaway O-star Bow Shocks as Particle Accelerators? The Case of AE Aur Revisited by Rangelov, Blagoy, Montmerle, Thierry, Federman, S. R., Boissé, Patrick, Gabici, Stefano

“…We present results of our Chandra/ACIS observations of the field centered on the fast, runaway O star AE Aur and its bow shock. Previous XMM-Newton…”
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Hubble Space Telescope Measurements of Vacuum Ultraviolet Lines of Interstellar CH by Sheffer, Y, Federman, S. R

“…Three interstellar absorption lines near 1370 AA seen toward [unk] Oph have been assigned by Watson to Rydberg transitions in the [unk] X (or 3d- X) band of…”
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The Nature of Interstellar Gas toward the Pleiades Revealed in Absorption Lines by Ritchey, A. M, Martinez, M, Pan, K, Federman, S. R, Lambert, D. L

“…We present high-resolution, high signal-to-noise ratio absorption-line observations of CN, Ca II, Ca I, CH super(+), and CH along 20 lines of sight toward…”
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Physical Conditions in Shocked Interstellar Gas Interacting with the Supernova Remnant IC 443 by Ritchey, Adam M., Jenkins, Edward B., Federman, S. R., Rice, Johnathan S., Caprioli, Damiano, Wallerstein, George

“…Abstract We present the results of a detailed investigation into the physical conditions in interstellar material interacting with the supernova remnant (SNR)…”
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Lifetimes and Oscillator Strengths for Ultraviolet Transitions in Singly Ionized Copper by Brown, Michael S, Federman, S. R, Irving, R. E, Cheng, S, Curtis, L. J

“…High-quality oscillator strengths are needed to convert the amount of interstellar absorption into an accurate abundance from data acquired with the Hubble…”
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Reanalysis of Copernicus Measurements of Interstellar Carbon Monoxide by Crenny, T, Federman, S. R

“…We used archival data acquired with Copernicus to reexamine CO column densities, as self-consistent oscillator strengths are now available. Our focus is on…”
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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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The nature of the Nai D-lines in the Red Rectangle by Thomas, Joshua D, Witt, Adolf N, Aufdenberg, Jason P, Bjorkman, J. E, Dahlstrom, Julie A, Federman, S. R, Hobbs, L. M, Vijh, Uma P, York, Donald G

“…ABSTRACT In this paper we examine the profiles of the complex Nai D-lines in the Red Rectangle. The spectra were acquired with the Astrophysical Research…”
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Ab Initio Study of Ground-state CS Photodissociation via Highly Excited Electronic States by Xu, Zhongxing, Luo, Nan, Federman, S. R., Jackson, William M., Ng, Cheuk-Yiu, Wang, Lee-Ping, Crabtree, Kyle N.

“…Photodissociation by ultraviolet radiation is the key destruction pathway for CS in photon-dominated regions, such as diffuse clouds. However, the large…”
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Lifetimes and Oscillator Strengths for Ultraviolet Transitions in Neutral Chlorine by Alkhayat, R. B., Irving, R. E., Federman, S. R., Ellis, D. G., Cheng, S.

“…We present lifetime measurements using beam-foil techniques for radiative transitions from the 3p4(1S)4s 2S1/2, 3p4(3P)5 , and 3p4(3P)3d 2F5/2 levels in Cl I…”
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The Transition from Diffuse Molecular Gas to Molecular Cloud Material in Taurus by Federman, S. R., Rice, Johnathan S., Ritchey, A. M., Kim, Hwihyun, Lacy, John H., Goldsmith, Paul F., Flagey, Nicolas, Mace, Gregory N., Lambert, David L.

“…Abstract We study four lines of sight that probe the transition from diffuse molecular gas to molecular cloud material in Taurus. Measurements of atomic and…”
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Far Ultraviolet Spectroscopic Explorer Measurements of Interstellar Fluorine by Federman, S. R, Sheffer, Yaron, Lambert, David L, Smith, V. V

“…The source of fluorine is not well understood, although core-collapse supernovae, Wolf-Rayet stars, and asymptotic giant branch stars have been suggested. A…”
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