Search Results - "Penton, Steven V."

AN HST/COS SURVEY OF THE LOW-REDSHIFT INTERGALACTIC MEDIUM. I. SURVEY, METHODOLOGY, AND OVERALL RESULTS by Danforth, Charles W, Keeney, Brian A, Tilton, Evan M, Shull, J Michael, Stocke, John T, Stevans, Matthew, Pieri, Matthew M, Savage, Blair D, France, Kevin, Syphers, David, Smith, Britton D, Green, James C, Froning, Cynthia, Penton, Steven V, Osterman, Steven N

“…We use high-quality, medium-resolution Hubble Space Telescope /Cosmic Origins Spectrograph ( HST /COS) observations of 82 UV-bright active galactic nuclei…”
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SORCE and TSIS-1 SIM Comparison: Absolute Irradiance Scale Reconciliation by Harder, Jerald, Béland, Stéphane, Penton, Steven V., Richard, Erik, Weatherhead, Elizabeth, Araujo-Pradere, Eduardo

“…The Solar Radiation and Climate Experiment (SORCE) and Total and Spectral Irradiance Sensor (TSIS-1) conducted an intercomparison for the two Spectral…”
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HST-COS OBSERVATIONS OF HYDROGEN, HELIUM, CARBON, AND NITROGEN EMISSION FROM THE SN 1987A REVERSE SHOCK by FRANCE, Kevin, MCCRAY, Richard, HENG, Kevin, LARSSON, Josefin, LAWRENCE, Stephen, LUNDQVIST, Peter, PANAGIA, Nino, PUN, Chun S. J, SMITH, Nathan, SOLLERMAN, Jesper, SONNEBORN, George, SUGERMAN, Ben, PENTON, Steven V, CRAIG WHEELER, J, KIRSHNER, Robert P, CHALLIS, Peter, MARTIN LAMING, J, BOUCHET, Patrice, CHEVALIER, Roger, GARNAVICH, Peter M, FRANSSON, Claes

“…We present the most sensitive ultraviolet observations of Supernova 1987A to date. Imaging spectroscopy from the Hubble Space Telescope-Cosmic Origins…”
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CHARACTERIZING THE CIRCUMGALACTIC MEDIUM OF NEARBY GALAXIES WITH HST /COS AND HST /STIS ABSORPTION-LINE SPECTROSCOPY by Stocke, John T, Keeney, Brian A, Danforth, Charles W, Shull, J Michael, Froning, Cynthia S, Green, James C, Penton, Steven V, Savage, Blair D

“…The circumgalactic medium (CGM) of late-type galaxies is characterized using UV spectroscopy of 11 targeted QSO/galaxy pairs at z [< or =, slant] 0.02 with the…”
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The Cosmic Ultraviolet Baryon Survey (CUBS) – I. Overview and the diverse environments of Lyman limit systems at z < 1 by Chen, Hsiao-Wen, Zahedy, Fakhri S, Boettcher, Erin, Cooper, Thomas M, Johnson, Sean D, Rudie, Gwen C, Chen, Mandy C, Walth, Gregory L, Cantalupo, Sebastiano, Cooksey, Kathy L, Faucher-Giguère, Claude-André, Greene, Jenny E, Lopez, Sebastian, Mulchaey, John S, Penton, Steven V, Petitjean, Patrick, Putman, Mary E, Rafelski, Marc, Rauch, Michael, Schaye, Joop, Simcoe, Robert A, Weiner, Benjamin J

“…We present initial results from the Cosmic Ultraviolet Baryon Survey (CUBS). CUBS is designed to map diffuse baryonic structures at redshift z ≲ 1 using…”
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The Cosmic Origins Spectrograph by Green, James C, Froning, Cynthia S, Osterman, Steve, Ebbets, Dennis, Heap, Sara H, Leitherer, Claus, Linsky, Jeffrey L, Savage, Blair D, Sembach, Kenneth, Michael Shull, J, Siegmund, Oswald H. W, Snow, Theodore P, Spencer, John, Alan Stern, S, Stocke, John, Welsh, Barry, Béland, Stéphane, Burgh, Eric B, Danforth, Charles, France, Kevin, Keeney, Brian, McPhate, Jason, Penton, Steven V, Andrews, John, Brownsberger, Kenneth, Morse, Jon, Wilkinson, Erik

“…The Cosmic Origins Spectrograph (COS) is a moderate-resolution spectrograph with unprecedented sensitivity that was installed into the Hubble Space Telescope…”
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The Cosmic Ultraviolet Baryon Survey (CUBS) – III. Physical properties and elemental abundances of Lyman-limit systems at z < 1 by Zahedy, Fakhri S, Chen, Hsiao-Wen, Cooper, Thomas M, Boettcher, Erin, Johnson, Sean D, Rudie, Gwen C, Chen, Mandy C, Cantalupo, Sebastiano, Cooksey, Kathy L, Faucher-Giguère, Claude-André, Greene, Jenny E, Lopez, Sebastian, Mulchaey, John S, Penton, Steven V, Petitjean, Patrick, Putman, Mary E, Rafelski, Marc, Rauch, Michael, Schaye, Joop, Simcoe, Robert A, Walth, Gregory L

“…We present a systematic investigation of physical conditions and elemental abundances in four optically thick Lyman-limit systems (LLSs) at z = 0.36–0.6…”
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The Cosmic Ultraviolet Baryon Survey (CUBS). II. Discovery of an H2-bearing DLA in the Vicinity of an Early-type Galaxy at z = 0.576 by Boettcher, Erin, Hsiao-Wen, Chen, Zahedy, Fakhri S, Cooper, Thomas J, Johnson, Sean D, Rudie, Gwen C, Chen, Mandy C, Petitjean, Patrick, Cantalupo, Sebastiano, Cooksey, Kathy L, Claude-André Faucher-Giguère, Greene, Jenny E, Lopez, Sebastian, Mulchaey, John S, Penton, Steven V, Putman, Mary E, Rafelski, Marc, Rauch, Michael, Schaye, Joop, Simcoe, Robert A, Walth, Gregory L

“…We report the serendipitous detection of an H2-bearing damped Lyα absorber at z = 0.576 in the spectrum of the QSO J0111–0316 in the Cosmic Ultraviolet Baryon…”
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The cosmic ultraviolet baryon survey (CUBS) IV: The complex multiphase circumgalactic medium as revealed by partial Lyman limit systems by Cooper, Thomas J, Rudie, Gwen C, Chen, Hsiao-Wen, Johnson, Sean D, Zahedy, Fakhri S, Chen, Mandy C, Boettcher, Erin, Walth, Gregory L, Cantalupo, Sebastiano, Cooksey, Kathy L, Faucher-Giguère, Claude-André, Greene, Jenny E, Lopez, Sebastian, Mulchaey, John S, Penton, Steven V, Petitjean, Patrick, Putman, Mary E, Rafelski, Marc, Rauch, Michael, Schaye, Joop, Simcoe, Robert A

“…ABSTRACT We present a detailed study of two partial Lyman limit systems (pLLSs) of neutral hydrogen column density $N_\mathrm{H\, I}\approx (1-3)\times…”
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The Galaxy Environment of O VI Absorption Systems by Stocke, John T, Penton, Steven V, Danforth, Charles W, Shull, J. Michael, Tumlinson, Jason, McLin, Kevin M

“…We combine a FUSE sample of O VI absorbers (z < 0.15) with a database of 1.07 million galaxy redshifts to explore the relationship between absorbers and galaxy…”
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A Hubble Space Telescope/Cosmic Origins Spectrograph Search for Warm-hot Baryons in the Mrk 421 Sight Line by Danforth, Charles W, Stocke, John T, Keeney, Brian A, Penton, Steven V, Shull, J. Michael, Yao, Yangsen, Green, James C

“…Thermally broadened Ly Delta *a absorbers (BLAs) offer an alternate method to using highly ionized metal absorbers (O VI, O VII, etc.) to probe the warm-hot…”
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The Local Lyα Forest. II. Distribution of H I Absorbers,Doppler Widths, and Baryon Content by Penton, Steven V, Shull, J. Michael, Stocke, John T

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Does the Milky Way Produce a Nuclear Galactic Wind? by Keeney, Brian A, Danforth, Charles W, Stocke, John T, Penton, Steven V, Shull, J. Michael, Sembach, Kenneth R

“…We detect high-velocity absorbing gas using Hubble Space Telescope and Far Ultraviolet Spectroscopic Explorer medium-resolution spectroscopy along two…”
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HST/COS Observations of Galactic High-velocity Clouds: Four Active Galactic Nucleus Sight Lines through Complex C by Shull, J. Michael, Stevans, Matthew, Danforth, Charles, Penton, Steven V, Lockman, Felix J, Arav, Nahum

“…We report ultraviolet spectra of Galactic high-velocity clouds (HVCs) in Complex C, taken by the Cosmic Origins Spectrograph (COS) on the Hubble Space…”
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The Local Lyα Forest. III. Relationship between Lyα Absorbers and Galaxies, Voids, and Superclusters by Penton, Steven V, Stocke, John T, Shull, J. Michael

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The Metallicity of Intergalactic Gas in Cosmic Voids by Stocke, John T, Danforth, Charles W, Shull, J. Michael, Penton, Steven V, Giroux, Mark L

“…We have used the Hubble STIS and FUSE archives of ultraviolet spectra of bright AGNs to identify intergalactic Ly alpha absorbers in nearby (z less than or…”
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The Local Lyα Forest: Absorbers in Galaxy Voids by McLin, Kevin M, Stocke, John T, Weymann, R. J, Penton, Steven V, Shull, J. Michael

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Far Ultraviolet Spectroscopic Explorer Observations of the Low-Redshift Lyβ Forest by Shull, J. Michael, Giroux, Mark L, Penton, Steven V, Tumlinson, Jason, Stocke, John T, Jenkins, Edward B, Moos, H. Warren, Oegerle, William R, Savage, Blair D, Sembach, Kenneth R, York, Donald G, Green, James C, Woodgate, Bruce E

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The Cosmic Ultraviolet Baryon Survey (CUBS). II. Discovery of an H 2 -bearing DLA in the Vicinity of an Early-type Galaxy at z = 0.576 by Boettcher, Erin, Chen, Hsiao-Wen, Zahedy, Fakhri S., Cooper, Thomas J., Johnson, Sean D., Rudie, Gwen C., Chen, Mandy C., Petitjean, Patrick, Cantalupo, Sebastiano, Cooksey, Kathy L., Faucher-Giguère, Claude-André, Greene, Jenny E., Lopez, Sebastian, Mulchaey, John S., Penton, Steven V., Putman, Mary E., Rafelski, Marc, Rauch, Michael, Schaye, Joop, Simcoe, Robert A., Walth, Gregory L.

“…We report the serendipitous detection of an H 2 -bearing damped Ly α absorber at z = 0.576 in the spectrum of the QSO J0111–0316 in the Cosmic Ultraviolet…”
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CO/H{sub 2} abundance ratio ≈ 10{sup –4} in a protoplanetary disk by France, Kevin, McJunkin, Matthew, Herczeg, Gregory J., Penton, Steven V.

“…The relative abundances of atomic and molecular species in planet-forming disks around young stars provide important constraints on photochemical disk models…”
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