Zobrazeno 1 - 10
of 148
pro vyhledávání: '"John M O'Meara"'
Autor:
Sameer, Nicolas Lehner, J. Christopher Howk, Andrew J. Fox, John M. O’Meara, Benjamin D. Oppenheimer
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 264 (2024)
We analyze the O vi content and kinematics for 126 H i -selected absorbers at 0.14 ≲ z ≲ 0.73 for which the metallicities of their cool photoionized phase have been determined. We separate the absorbers into 100 strong Ly α forest systems (SLFSs
Externí odkaz:
https://doaj.org/article/60525e0c0c8f4b1c9b24b41631bd56dc
Autor:
Eilat Glikman, Rachel Langgin, Makoto A. Johnstone, Ilsang Yoon, Julia M. Comerford, Brooke D. Simmons, Hannah Stacey, Mark Lacy, John M. O’Meara
Publikováno v:
The Astrophysical Journal Letters, Vol 951, Iss 1, p L18 (2023)
We report the discovery of a candidate dual QSO at z = 1.889, a redshift that is in the era known as “cosmic noon” where most of the universe’s black hole and stellar mass growth occurred. The source was identified in Hubble Space Telescope WFC
Externí odkaz:
https://doaj.org/article/a0df07cdcdc949908ef43f1a116db20a
Autor:
Kirill Tchernyshyov, Jessica K. Werk, Matthew C. Wilde, J. Xavier Prochaska, Todd M. Tripp, Joseph N. Burchett, Rongmon Bordoloi, J. Christopher Howk, Nicolas Lehner, John M. O’Meara, Nicolas Tejos, Jason Tumlinson
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 2, p 41 (2023)
This study addresses how the incidence rate of strong O vi absorbers in a galaxy’s circumgalactic medium (CGM) depends on galaxy mass and, independently, on the amount of star formation in the galaxy. We use Hubble Space Telescope/Cosmic Origins Sp
Externí odkaz:
https://doaj.org/article/3cde290eaf26450eb6f9a1377a106892
Autor:
Matthew C. Wilde, Kirill Tchernyshyov, Jessica K. Werk, Todd M. Tripp, Joseph N. Burchett, J. Xavier Prochaska, Nicolas Tejos, Nicolas Lehner, Rongmon Bordoloi, John M. O’Meara, Jason Tumlinson, J. Christopher Howk
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 114 (2023)
We combine data sets from the CGM ^2 and CASBaH surveys to model a transition point, R _cross , between circumgalactic and intergalactic media (CGM and IGM, respectively). In total, our data consist of 7244 galaxies at z < 0.5 with precisely measured
Externí odkaz:
https://doaj.org/article/9a8d954e82c5453e9042fea1021e8262
Autor:
Michelle A. Berg, Nicolas Lehner, J. Christopher Howk, John M. O’Meara, Joop Schaye, Lorrie A. Straka, Kathy L. Cooksey, Todd M. Tripp, J. Xavier Prochaska, Benjamin D. Oppenheimer, Sean D. Johnson, Sowgat Muzahid, Rongmon Bordoloi, Jessica K. Werk, Andrew J. Fox, Neal Katz, Martin Wendt, Molly S. Peeples, Joseph Ribaudo, Jason Tumlinson
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 1, p 101 (2023)
The bimodal absorption system imaging campaign (BASIC) aims to characterize the galaxy environments of a sample of 36 H i -selected partial Lyman limit systems (pLLSs) and Lyman limit systems (LLSs) in 23 QSO fields at z ≲ 1. These pLLSs/LLSs provi
Externí odkaz:
https://doaj.org/article/295ba686bbc144d98994d5c3725e6bff
Autor:
Eilat Glikman, Cristian E. Rusu, Geoff C.-F. Chen, James Hung-Hsu Chan, Cristiana Spingola, Hannah Stacey, John McKean, Ciprian T. Berghea, S. G. Djorgovski, Matthew J. Graham, Daniel Stern, Tanya Urrutia, Mark Lacy, Nathan J. Secrest, John M. O’Meara
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 1, p 25 (2023)
We present the discovery of a gravitationally lensed dust-reddened QSO at z = 2.517, identified in a survey for QSOs by infrared selection. Hubble Space Telescope imaging reveals a quadruply lensed system in a cusp configuration, with a maximum image
Externí odkaz:
https://doaj.org/article/b9be94aa262c4a639e4bdeb0185ef880
Autor:
Rongmon Bordoloi, John M. O’Meara, Keren Sharon, Jane R. Rigby, Jeff Cooke, Ahmed Shaban, Mateusz Matuszewski, Luca Rizzi, Greg Doppmann, D. Christopher Martin, Anna M. Moore, Patrick Morrissey, James D. Neill
Publikováno v:
Nature. 606:59-63
Reservoirs of dense atomic gas (primarily hydrogen), contain approximately 90 percent of the neutral gas at a redshift of 3, and contribute to 2-3 percent of the total baryons in the Universe. These damped Lyman-${\alpha}$ systems (so called because
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee6c0ec98ef04e7aa6c54eca0b5834fd
https://doi.org/10.1038/s41586-022-04616-1
https://doi.org/10.1038/s41586-022-04616-1
Autor:
Marc . Kassis, Steve Allen, Carlos Alvarez, Ravinder Banyal, Robert Bertz, Charles Beichman, Aaron Brown, Matthew Brown, Gerald Cabak, Kevin Bundy, Sylvain Cetre, Jason Chin, Mark Chun, Will Deich, Richard Dekany, Jacques-Robert Delorme, Mark Devenot, Greg Doppmann, Michael P. Fitzgerald, Jason R. Fucik, Grant Hill, Philip . Hinz, Bradford P. Holden, Andrew W. Howard, Maodong Gao, Steve Gibson, Percy Gomez, Colby Gottschalk, Peter R. Gillingham, Tucker Jones, Nemanja Jovanovic, Evan Kirby, Quinn Konopacky, Shanti Krishnan, Renate Kupke, James E. Larkin, Stephanie D. Leifer, Hilton A. Lewis, Scott Lilley, Jessica Lu, James E. Lyke, Nicholas MacDonald, Eduardo Marin, Matt Matuszewski, Dimitri Mawet, Rosalie McGurk, Maxwell A. Millar-Blanchaer, Reston . Nash, Craig Nance, James D. Neill, John M. O'Meara, Eliad Peretz, Claire . Poppett, John C. Mather, Matthew V. Radovan, Mitsuko K. Roberts, Sam Ragland, Kodi Rider, Constance . Rockosi, Dale Sandfor, Boqiang Shen, Charles C. Steidel, Sunil Simha, Andy Skemer, Richard Stelter, Avinash Surendran, James Thorne, Ben McCarney, Kyle Lanclos, Ashley Baker, Ryan Rubenzahl, Arpita Roy, Sam Halverson, Jerry Edelstein, Christopher Martin, Maureen Savage, Dale Sandford, Stephanie Sallum, Josh Walawender, Peter Wizinowich, Kyle B. Westfall, Kerry J. Vahala, Shelley A. Wright, Truman Wold, Sherry Yeh
Publikováno v:
Ground-based and Airborne Instrumentation for Astronomy IX.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65328af3f1273f3342b2c41178afe082
https://doi.org/10.1117/12.2628630
https://doi.org/10.1117/12.2628630
Autor:
Kate H. R. Rubin, Christian Juarez, Kathy L. Cooksey, Jessica K. Werk, J. Xavier Prochaska, John M. O’Meara, Joseph N. Burchett, Ryan J. Rickards Vaught, Varsha P. Kulkarni, Lorrie A. Straka
Publikováno v:
The Astrophysical Journal, 936(2):171
We use medium-resolution Keck/Echellette Spectrograph and Imager spectroscopy of bright quasars to study cool gas traced by CaII 3934,3969 and NaI 5891,5897 absorption in the interstellar/circumgalactic media of 21 foreground star-forming galaxies at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06b73279ca33a450df3e5e01ec0af490
http://arxiv.org/abs/2208.04973
http://arxiv.org/abs/2208.04973
Autor:
Abby Mintz, Marc Rafelski, Regina A. Jorgenson, Michele Fumagalli, Rajeshwari Dutta, Crystal L. Martin, Elisabeta Lusso, Kate H. R. Rubin, John M. O’Meara
Publikováno v:
The Astronomical Journal
The Astronomical Journal, vol 164, iss 2
The Astronomical Journal, vol 164, iss 2
The circumgalactic medium (CGM) plays a vital role in the formation and evolution of galaxies, acting as a lifeline between galaxies and the surrounding intergalactic medium (IGM). In this study we leverage a unique sample of quasar pairs to investig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::957c6656cadafe18fb825e2f592f1651
http://arxiv.org/abs/2206.03514
http://arxiv.org/abs/2206.03514