Search Results - "Sargent, W. L. W."

Abundance Patterns in the Draco, Sextans, and Ursa Minor Dwarf Spheroidal Galaxies by Shetrone, Matthew D, Côté, Patrick, Sargent, W. L. W

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A first direct measurement of the intergalactic medium temperature around a quasar at z= 6 by Bolton, James S., Becker, George D., Wyithe, J. Stuart B., Haehnelt, Martin G., Sargent, Wallace L. W.

“…The thermal state of the intergalactic medium (IGM) provides an indirect probe of both the H i and He ii reionization epochs. Current constraints on the IGM…”
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Detection of extended He ii reionization in the temperature evolution of the intergalactic medium by Becker, George D., Bolton, James S., Haehnelt, Martin G., Sargent, Wallace L. W.

“…We present new measurements of the temperature of the intergalactic medium (IGM) derived from the Lyα forest over 2.0 ≤z≤ 4.8. The small-scale structure in the…”
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Metallicity of the Intergalactic Medium Using Pixel Statistics. III. Silicon by Aguirre, Anthony, Schaye, Joop, Kim, Tae-Sun, Theuns, Tom, Rauch, Michael, Sargent, Wallace L. W

“…We study the abundance of silicon in the intergalactic medium by analyzing the statistics of Si IV, C IV, and H I pixel optical depths in a sample of 19…”
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Invasive crayfish Orconectes rusticus (Decapoda, Cambaridae) is a more effective predator of substrate nesting fish eggs than native crayfish (O. virilis) by Morse, Joshua W, Baldridge, A. K, Sargent, L. W

“…Non-indigenous crayfish pose substantial threats to native species, community structure, and ecosystem function in invaded lakes across the globe. The…”
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SN 2002cx: The Most Peculiar Known Type Ia Supernova by Li, Weidong, Filippenko, Alexei V., Chornock, Ryan, Berger, Edo, Berlind, Perry, Calkins, Michael L., Challis, Peter, Fassnacht, Chris, Jha, Saurabh, Kirshner, Robert P., Matheson, Thomas, Sargent, Wallace L. W., Simcoe, Robert A., Smith, Graeme H., Squires, Gordon

“…We present photometric and spectroscopic observations of supernova (SN) 2002cx, which reveal it to be unique among all observed Type Ia supernovae (SNe Ia). SN…”
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High-Redshift Metals. I. The Decline of C IV at z > 5.3 by Becker, George D, Rauch, Michael, Sargent, Wallace L. W

“…We present the results from our search for C IV absorption systems at redshifts z = 5.3-6.0. We have observed four z ~ 6 QSOs with Keck/NIRSPEC in echelle…”
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Filamentary infall of cold gas and escape of Lyα and hydrogen ionizing radiation from an interacting high-redshift galaxy by Rauch, Michael, Becker, George D., Haehnelt, Martin G., Gauthier, Jean-Rene, Ravindranath, Swara, Sargent, Wallace L. W.

“…We present observations of a peculiar Lyα-emitting galaxy at redshift z = 3.344, discovered in a deep, blind spectroscopic survey for faint Lyα emitters with…”
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The Distribution of Metallicity in the Intergalactic Medium at z ~ 2.5: O VI and C IV Absorption in the Spectra of Seven QSOs by Simcoe, Robert A, Sargent, Wallace L. W, Rauch, Michael

“…We present a direct measurement of the metallicity distribution function for the high-redshift intergalactic medium (IGM). We determine the shape of this…”
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The Black Hole Masses and Host Galaxies of BL Lacertae Objects by Barth, Aaron J, Ho, Luis C, Sargent, Wallace L. W

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POX 52: A Dwarf Seyfert 1 Galaxy with an Intermediate-Mass Black Hole by Barth, Aaron J, Ho, Luis C, Rutledge, Robert E, Sargent, Wallace L. W

“…We describe new optical images and spectra of POX 52, a dwarf galaxy with an active nucleus that was originally detected in the POX objective-prism survey…”
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The Stellar Populations in the Central Parsecs of Galactic Bulges by Sarzi, Marc, Rix, Hans-Walter, Shields, Joseph C, Ho, Luis C, Barth, Aaron J, Rudnick, Gregory, Filippenko, Alexei V, Sargent, Wallace L. W

“…We present Hubble Space Telescope blue spectra at intermediate spectral resolution for the nuclei of 23 nearby disk galaxies. These objects were selected to…”
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Improved measurements of the intergalactic medium temperature around quasars: possible evidence for the initial stages of He ii reionization at z ≃ 6 by Bolton, James S., Becker, George D., Raskutti, Sudhir, Wyithe, J. Stuart B., Haehnelt, Martin G., Sargent, Wallace L. W.

“…We present measurements of the intergalactic medium (IGM) temperature within ∼5 proper Mpc of seven luminous quasars at z ≃ 6. The constraints are obtained…”
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Small-Scale Structure at High Redshift. I. Glimpses of the Interstellar Medium at Redshift ~3.5 by Rauch, Michael, Sargent, Wallace L. W, Barlow, Tom A

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Small-Scale Structure at High Redshift. IV. Low-Ionization Gas Intersecting Three Lines of Sight to Q2237+0305 by Rauch, Michael, Sargent, Wallace L. W, Barlow, Thomas A, Simcoe, Robert A

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The Hubble Space Telescope quasar absorption line key project. v. redshift evolution of lyman limit absorption in the spectra of a large sample of quasars by Stengler-Larrea, Erik A., Boksenberg, Alec, Steidel, Charles, C., Sargent, W. L. W., Bacall, John N., Bergeron, Jacqueline, Hartig, George F., Jannuzi, Buell T., Kirhakos, Sofia, Savage, Blair D.

“…Using a sample of 119 QSOs, containing objects we have selected having previously available high quality ground-based and IUE spectral observations, together…”
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Small-Scale Structure at High Redshift. III. The Clumpiness of the Intergalactic Medium on Subkiloparsec Scales by Rauch, Michael, Sargent, Wallace L. W, Barlow, Thomas A, Carswell, Robert F

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Stellar Velocity Dispersion and Black Hole Mass in the Blazar Markarian 501 by Barth, Aaron J, Ho, Luis C, Sargent, Wallace L. W

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The Evolution of Optical Depth in the Lyα Forest: Evidence Against Reionization at z~6 by Becker, George D, Rauch, Michael, Sargent, Wallace L. W

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The Hubble Space Telescope Quasar Absorption Line Key Project: The Unusual Absorption-Line System in the Spectrum of PG 2302+029—Ejected or Intervening? by Jannuzi, B. T, Hartig, G. F, Kirhakos, S, Sargent, W. L. W, Turnshek, D. A, Weymann, R. J, Bahcall, J. N, Bergeron, J, Boksenberg, A, Savage, B. D, Schneider, D. P, Wolfe, A. M

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