Zobrazeno 1 - 10
of 218
pro vyhledávání: '"O'Sullivan, Dónal"'
Autor:
Li, Jessica S., Vargas, Carlos J., O'Sullivan, Donal, Hamden, Erika, Cai, Zheng, Matuszewski, Mateusz, Martin, Christopher, Keppler, Miriam, Chung, Haeun, Melso, Nicole, Zhang, Shiwu
Publikováno v:
ApJ 952 137 (2023)
The recent discovery of enormous Ly$\alpha$ nebulae (ELANe), characterized by physical extents $>200$ kpc and Ly$\alpha$ luminosities $>10^{44}$ erg s$^{-1}$, provide a unique opportunity to study the intergalactic and circumgalactic medium (IGM/CGM)
Externí odkaz:
http://arxiv.org/abs/2307.15779
Autor:
O'Sullivan, Dónal Brendan
The population of galaxies we see today is the result of billions of years of gas inflows, outflows, mergers, and feedback. To develop any holistic picture of the origin and evolution of galaxies, we thus need to understand their environments. The ci
Externí odkaz:
https://thesis.library.caltech.edu/13846/1/Thesis__Mapping_the_Cosmic_Web_Updated.pdf
Autor:
O'Sullivan, Donal, Chen, Yuguang
The Palomar Cosmic Web Imager (PCWI) and Keck Cosmic Web Imager (KCWI) are integral-field spectrographs on the Hale 5m telescope at Palomar Observatory and the Keck-2 10m telescope at W. M. Keck Observatory, respectively. In recent years, these instr
Externí odkaz:
http://arxiv.org/abs/2011.05444
Autor:
Hamden, Erika, Martin, D. Christopher, Milliard, Bruno, Schiminovich, David, Nikzad, Shouleh, Evrard, Jean, Kyne, Gillian, Grange, Robert, Montel, Johan, Pirot, Etienne, Hoadley, Keri, O'Sullivan, Donal, Melso, Nicole, Picouet, Vincent, Vibert, Didier, Balard, Philippe, Blanchard, Patrick, Crabill, Marty, Pascal, Sandrine, Mirc, Frederi, Bray, Nicolas, Jewell, April, Bird, Julia Blue, Zorilla, Jose, Ong, Hwei Ru, Matuszewski, Mateusz, Lingner, Nicole, Augustin, Ramona, Limon, Michele, Gomes, Albert, Tapie, Pierre, Soors, Xavier, Zenone, Isabelle, Saccoccio, Muriel
The Faint Intergalactic Medium Redshifted Emission Balloon (FIREBall) is a mission designed to observe faint emission from the circumgalactic medium of moderate redshift (z~0.7) galaxies for the first time. FIREBall observes a component of galaxies t
Externí odkaz:
http://arxiv.org/abs/2007.08528
Autor:
Darvish, Behnam, Scoville, Nick Z., Martin, Christopher, Sobral, David, Mobasher, Bahram, Rettura, Alessandro, Matthee, Jorryt, Capak, Peter, Chartab, Nima, Hemmati, Shoubaneh, Masters, Daniel, Nayyeri, Hooshang, O'Sullivan, Donal, Paulino-Afonso, Ana, Sattari, Zahra, Shahidi, Abtin, Salvato, Mara, Lemaux, Brian C., Fevre, Olivier Le, Cucciati, Olga
We report the spectroscopic confirmation of a new protocluster in the COSMOS field at $z$ $\sim$ 2.2, COSMOS Cluster 2.2 (CC2.2), originally identified as an overdensity of narrowband selected H$\alpha$ emitting candidates. With only two masks of Kec
Externí odkaz:
http://arxiv.org/abs/2002.06207
Autor:
O'Sullivan, Donal, Martin, Christopher, Matuszewski, Mateusz, Hoadley, Keri, Hamden, Erika, Neill, James D, Lin, Zeren, Parihar, Prachi
Publikováno v:
ApJ 894 3 (2020)
We present the pilot study component of the Fluorescent Lyman-Alpha Structures in High-z Environments (FLASHES) Survey; the largest integral-field spectroscopy survey to date of the circumgalactic medium at $z=2.3-3.1$. We observed 48 quasar fields b
Externí odkaz:
http://arxiv.org/abs/1911.10740
Autor:
Hamden, Erika T., Hoadley, Keri, Martin, D. Christopher, Schiminovich, David, Milliard, Bruno, Nikzad, Shouleh, Augustin, Ramona, Balard, Philippe, Blanchard, Patrick, Bray, Nicolas, Crabill, Marty, Evrard, Jean, Gomes, Albert, Grange, Robert, Gross, Julia, Jewell, April, Kyne, Gillian, Limon, Michele, Lingner, Nicole, Matuszewski, Mateusz, Melso, Nicole, Mirc, Frederi, Montel, Johan, Ong, Hwei Ru, O'Sullivan, Donal, Pascal, Sandrine, Perot, Etienne, Picouet, Vincent, Saccoccio, Muriel, Smiley, Brian, Soors, Xavier, Tapie, Pierre, Vibert, Didier, Zenone, Isabelle, Zorilla, Jose
Here we discuss advances in UV technology over the last decade, with an emphasis on photon counting, low noise, high efficiency detectors in sub-orbital programs. We focus on the use of innovative UV detectors in a NASA astrophysics balloon telescope
Externí odkaz:
http://arxiv.org/abs/1905.00433
Autor:
Martin, D. Christopher, O'Sullivan, Donal, Matuszweski, Mateusz, Hamden, Erika, Dekel, Avishai, Lapiner, Sharon, Morrissey, Patrick, Neill, James D., Cantalupo, Sebastiano, Prochaska, J. Xavier, Steidel, Charles, Trainor, Ryan, Moore, Anna, Ceverino, Daniel, Primack, Joel, Rizzi, Luca
Theory suggests that there are two primary modes of accretion through which dark matter halos acquire the gas to form and fuel galaxies, hot and cold mode accretion. In cold mode accretion, gas streams along cosmic web filaments to the center of the
Externí odkaz:
http://arxiv.org/abs/1904.11465
Autor:
Morrissey, Patrick, Matuszewski, Matuesz, Martin, D. Christopher, Neill, James D., Epps, Harland, Fucik, Jason, Weber, Bob, Darvish, Behnam, Adkins, Sean, Allen, Steve, Bartos, Randy, Belicki, Justin, Cabak, Jerry, Callahan, Shawn, Cowley, Dave, Crabill, Marty, Deich, Willian, Delecroix, Alex, Doppman, Greg, Hilyard, David, James, Ean, Kaye, Steve, Kokorowski, Michael, Kwok, Shui, Lanclos, Kyle, Milner, Steve, Moore, Anna, O'Sullivan, Donal, Parihar, Prachi, Park, Sam, Phillips, Andrew, Rizzi, Luca, Rockosi, Constance, Rodriguez, Hector, Salaun, Yves, Seaman, Kirk, Sheikh, David, Weiss, Jason, Zarzaca, Ray
We report on the design and performance of the Keck Cosmic Web Imager (KCWI), a general purpose optical integral field spectrograph that has been installed at the Nasmyth port of the 10 m Keck II telescope on Mauna Kea, HI. The novel design provides
Externí odkaz:
http://arxiv.org/abs/1807.10356
Autor:
Cai, Zheng, Hamden, Erika, Matuszewski, Matt, Prochaska, J. Xavier, Li, Qiong, Cantalupo, Sebastiano, Battaia, Fabrizio Arrigoni, Martin, Christopher, Neill, James D., O'Sullivan, Donal, Wang, Ran, Moore, Anna, Morrissey, Patrick
Enormous Ly$\alpha$ nebulae (ELANe) represent the extrema of Ly$\alpha$ nebulosities. They have detected extents of $>200$ kpc in Ly$\alpha$ and Ly$\alpha$ luminosities $>10^{44}$ erg s$^{-1}$. The ELAN population is an ideal laboratory to study the
Externí odkaz:
http://arxiv.org/abs/1803.10781