Zobrazeno 1 - 10
of 141
pro vyhledávání: '"Penton Steven"'
Autor:
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.
We present a detailed study of two partial Lyman limit systems (pLLSs) of neutral hydrogen column density $N_\mathrm{H\,I}\approx(1-3)\times10^{16}\,\mathrm{cm}^{-2}$ discovered at $z=0.5$ in the Cosmic Ultraviolet Baryon Survey (CUBS). Available far
Externí odkaz:
http://arxiv.org/abs/2110.13933
Autor:
Zahedy, Fakhri S., Chen, Hsiao-Wen, Cooper, Thomas M., Boettcher, Erin T., 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.
(Abridged) We present a systematic investigation of physical conditions and elemental abundances in four optically thick Lyman-limit systems (LLSs) at $z=0.36-0.6$ discovered within the Cosmic Ultraviolet Baryon Survey (CUBS). CUBS LLSs exhibit multi
Externí odkaz:
http://arxiv.org/abs/2106.04608
Autor:
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 Lyman-$\alpha$ absorber at z = 0.576 in the spectrum of the QSO J0111-0316 in the Cosmic Ultraviolet Baryon Survey. Spectroscopic observations from HST-COS in the far-ultraviolet reve
Externí odkaz:
http://arxiv.org/abs/2010.11958
Autor:
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-Gigu`ere, Claude-Andre, 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 absorption-line spectroscopy of 15 UV-bright QSOs with matching deep galaxy survey data. CUBS QSOs
Externí odkaz:
http://arxiv.org/abs/2005.02408
Autor:
Richard Erik, Coddington Odele, Harber Dave, Chambliss Michael, Penton Steven, Brooks Keira, Charbonneau Luke, Peck Courtney, Béland Stéphane, Pilewskie Peter, Woods Tom
Publikováno v:
Journal of Space Weather and Space Climate, Vol 14, p 10 (2024)
The first implementation of NASA’s Total and Spectral Solar Irradiance Sensor (TSIS-1) launched on December 15th, 2017, and was integrated into the International Space Station (ISS) to measure both the total solar irradiance (TSI) and the solar spe
Externí odkaz:
https://doaj.org/article/56fcfdd925c4434fa176f989768986bc
Autor:
Keeney, Brian A., Stocke, John T., Pratt, Cameron T., Davis, Julie D., Syphers, David, Danforth, Charles W., Shull, J. Michael, Froning, Cynthia S., Green, James C., Penton, Steven V., Savage, Blair D.
Publikováno v:
2018, ApJS, 237, 11
To establish the connection between galaxies and UV-detected absorption systems in the local universe, a deep ($g\leq20$) and wide ($\sim20^{\prime}$ radius) galaxy redshift survey is presented around 47 sight lines to UV-bright AGN observed by the C
Externí odkaz:
http://arxiv.org/abs/1805.08767
Autor:
Keeney, Brian A., Stocke, John T., Danforth, Charles W., Shull, J. Michael, Pratt, Cameron T., Froning, Cynthia S., Green, James C., Penton, Steven V., Savage, Blair D.
We present basic data and modeling for a survey of the cool, photo-ionized Circum-Galactic Medium (CGM) of low-redshift galaxies using far-UV QSO absorption line probes. This survey consists of "targeted" and "serendipitous" CGM subsamples, originall
Externí odkaz:
http://arxiv.org/abs/1704.00235
The relative abundances of atomic and molecular species in planet-forming disks around young stars provide important constraints on photochemical disk models and provide a baseline for calculating disk masses from measurements of trace species. A kno
Externí odkaz:
http://arxiv.org/abs/1409.0861
Autor:
Danforth, Charles W., Keeney, Brian A., Tilton, Evan M., Shull, J. Michael, Stevans, Matthew, Pieri, Matthew M., Stocke, John T., 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 {\it Hubble Space Telescope}/Cosmic Origins Spectrograph (\HST/COS) observations of 82 UV-bright AGN at redshifts $z_{AGN}<0.85$ to construct the largest survey of the low-redshift intergalactic medium (IGM) to
Externí odkaz:
http://arxiv.org/abs/1402.2655
Autor:
Stocke, John T., Keeney, Brian A., Danforth, Charles W., Shull, J. Michael, Froning, Cynthia S., Green, James C., Penton, Steven V., Savage, Blair D.
Publikováno v:
2013ApJ...763..148S
The Circumgalactic Medium (CGM) of late-type galaxies is characterized using UV spectroscopy of 11 targeted QSO/galaxy pairs at z < 0.02 with the Hubble Space Telescope Cosmic Origins Spectrograph and ~60 serendipitous absorber/galaxy pairs at z < 0.
Externí odkaz:
http://arxiv.org/abs/1212.5658