Search Results - "Overzier, Roderik"

The realm of the galaxy protoclusters: A review by Overzier, Roderik A.

“…The study of galaxy protoclusters is beginning to fill in unknown details of the important phase of the assembly of clusters and cluster galaxies. This review…”
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Conditions for Direct Black Hole Seed Collapse near a Radio-loud Quasar 1 Gyr after the Big Bang by Overzier, Roderik A.

“…Abstract Observations of luminous quasars and their supermassive black holes at z ≳ 6 suggest that they formed at dense matter peaks in the early universe…”
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A local clue to the reionization of the universe by Borthakur, Sanchayeeta, Heckman, Timothy M., Leitherer, Claus, Overzier, Roderik A.

“…Identifying the population of galaxies that was responsible for the reionization of the universe is a long-standing quest in astronomy. We present a possible…”
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ANCIENT LIGHT FROM YOUNG COSMIC CITIES: PHYSICAL AND OBSERVATIONAL SIGNATURES OF GALAXY PROTO-CLUSTERS by Chiang, Yi-Kuan, OVERZIER, RODERIK, Gebhardt, Karl

“…A growing number of galaxy clusters at z = 1-2 is being discovered as part of deep optical, IR, X-ray, and Sunyaev-Zel'dovich effect surveys. For a complete…”
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A New Technique for Finding Galaxies Leaking Lyman-continuum Radiation: [S ii]-deficiency by Wang, Bingjie, Heckman, Timothy M., Leitherer, Claus, Alexandroff, Rachel, Borthakur, Sanchayeeta, Overzier, Roderik A.

“…The source responsible for the reionization of the universe is believed to be the population of star-forming galaxies at z ∼ 6 to 12. The biggest uncertainty…”
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VLT/X-Shooter Spectroscopy of Lyman Break Analogs: Direct-method O/H Abundances and Nitrogen Enhancements by Loaiza-Agudelo, Maryory, Overzier, Roderik A., Heckman, Timothy M.

“…We used Very Large Telescope/X-Shooter to target a sample of nearby analogs of Lyman break galaxies (LBGs). These Lyman break analogs are similar to the LBGs…”
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INDIRECT EVIDENCE FOR ESCAPING IONIZING PHOTONS IN LOCAL LYMAN BREAK GALAXY ANALOGS by Alexandroff, Rachael M., Heckman, Timothy M., Borthakur, Sanchayeeta, Overzier, Roderik, Leitherer, Claus

“…ABSTRACT A population of early star-forming galaxies is the leading candidate for the re-ionization of the universe. It is still unclear, however, what…”
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The Fraction of Active Galactic Nuclei in the USS 1558-003 Protocluster at z = 2.53 by Macuga, Michael, Martini, Paul, Miller, Eric D., Brodwin, Mark, Hayashi, Masao, Kodama, Tadayuki, Koyama, Yusei, Overzier, Roderik A., Shimakawa, Rhythm, Tadaki, Ken-ichi, Tanaka, Ichi

“…The incidence of active galactic nuclei (AGNs) within the local environment is a potentially valuable probe of the mechanisms that trigger and provide fuel for…”
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A SYSTEMATIC SURVEY OF PROTOCLUSTERS AT z ∼ 3-6 IN THE CFHTLS DEEP FIELDS by Toshikawa, Jun, Kashikawa, Nobunari, Overzier, Roderik, Malkan, Matthew A., Furusawa, Hisanori, Ishikawa, Shogo, Onoue, Masafusa, Ota, Kazuaki, Tanaka, Masayuki, Niino, Yuu, Uchiyama, Hisakazu

“…ABSTRACT We present the discovery of three protoclusters at z ∼ 3-4 with spectroscopic confirmation in the Canada-France-Hawaii Telescope Legacy Survey Deep…”
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Protocluster detection in simulations of HSC–SSP and the 10-yr LSST forecast, using PCcones by Araya-Araya, Pablo, Vicentin, Marcelo C, Sodré, Laerte, Overzier, Roderik A, Cuevas, Hector

“…ABSTRACT The progenitors of present-day galaxy clusters give important clues about the evolution of the large-scale structure, cosmic mass assembly, and galaxy…”
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SILVERRUSH. VII. Subaru/HSC Identifications of Protocluster Candidates at z ∼ 6-7: Implications for Cosmic Reionization by Higuchi, Ryo, Ouchi, Masami, Ono, Yoshiaki, Shibuya, Takatoshi, Toshikawa, Jun, Harikane, Yuichi, Kojima, Takashi, Chiang, Yi-Kuan, Egami, Eiichi, Kashikawa, Nobunari, Overzier, Roderik, Konno, Akira, Inoue, Akio K., Hasegawa, Kenji, Fujimoto, Seiji, Goto, Tomotsugu, Ishikawa, Shogo, Ito, Kei, Komiyama, Yutaka, Tanaka, Masayuki

“…We report 14 and 26 protocluster candidates at z = 5.7 and 6.6 over 14 and 16 deg2 areas, respectively, selected from 2230 (259) Ly emitters (LAEs)…”
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Extreme Feedback and the Epoch of Reionization: Clues in the Local Universe by Heckman, Timothy M, Borthakur, Sanchayeeta, Overzier, Roderik, Kauffmann, Guinevere, Basu-Zych, Antara, Leitherer, Claus, Sembach, Ken, Martin, D. Chris, Rich, R. Michael, Schiminovich, David, Seibert, Mark

“…The source responsible for reionizing the universe at z>6 remains uncertain. While an energetically adequate population of star-forming galaxies may be in…”
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Discovery of Protoclusters at z ∼ 3.7 and 4.9: Embedded in Primordial Superclusters by Toshikawa, Jun, Malkan, Matthew A., Kashikawa, Nobunari, Overzier, Roderik, Uchiyama, Hisakazu, Ota, Kazuaki, Ishikawa, Shogo, Ito, Kei

“…We have carried out follow-up spectroscopy on three overdense regions of g- and r-dropout galaxies in the Canada-France-Hawaii Telescope Legacy Survey Deep…”
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SURVEYING GALAXY PROTO-CLUSTERS IN EMISSION: A LARGE-SCALE STRUCTURE AT z = 2.44 AND THE OUTLOOK FOR HETDEX by Chiang, Yi-Kuan, Overzier, Roderik A., Gebhardt, Karl, Finkelstein, Steven L., Chiang, Chi-Ting, Hill, Gary J., Blanc, Guillermo A., Drory, Niv, Chonis, Taylor S., Zeimann, Gregory R., Hagen, Alex, Schneider, Donald P., Jogee, Shardha, Ciardullo, Robin, Gronwall, Caryl

“…ABSTRACT Galaxy proto-clusters at provide a direct probe of the rapid mass assembly and galaxy growth of present-day massive clusters. Because of the need for…”
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Planck Far-infrared Detection of Hyper Suprime-Cam Protoclusters at z ∼ 4: Hidden AGN and Star Formation Activity by Kubo, Mariko, Toshikawa, Jun, Kashikawa, Nobunari, Chiang, Yi-Kuan, Overzier, Roderik, Uchiyama, Hisakazu, Clements, David L., Alexander, David M., Matsuda, Yuichi, Kodama, Tadayuki, Ono, Yoshiaki, Goto, Tomotsugu, Cheng, Tai-An, Ito, Kei

“…We perform a stacking analysis of Planck, AKARI, Infrared Astronomical Satellite, Wide-field Infrared Survey Explorer, and Herschel images of the largest…”
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EVIDENCE FOR ELEVATED X-RAY EMISSION IN LOCAL LYMAN BREAK GALAXY ANALOGS by Basu-Zych, Antara R, Lehmer, Bret D, Hornschemeier, Ann E, Goncalves, Thiago S, Fragos, Tassos, Heckman, Timothy M, OVERZIER, RODERIK A, Ptak, Andrew F, Schiminovich, David

“…Our knowledge of how X-ray emission scales with star formation at the earliest times in the universe relies on studies of very distant Lyman break galaxies…”
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The UV Luminosity Function of Protocluster Galaxies at z ∼ 4: The Bright-end Excess and the Enhanced Star Formation Rate Density by Ito, Kei, Kashikawa, Nobunari, Toshikawa, Jun, Overzier, Roderik, Kubo, Mariko, Uchiyama, Hisakazu, Liang, Yongming, Onoue, Masafusa, Tanaka, Masayuki, Komiyama, Yutaka, Lee, Chien-Hsiu, Lin, Yen-Ting, Marinello, Murilo, Martin, Crystal L., Shibuya, Takatoshi

“…We report the rest-frame ultraviolet luminosity function of g-dropout galaxies in 177 protocluster candidates (PC UVLF) at z ∼ 4 selected in the Hyper…”
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Confronting theoretical models with the observed evolution of the galaxy population out to z= 4 by Henriques, Bruno M. B., White, Simon D. M., Lemson, Gerard, Thomas, Peter A., Guo, Qi, Marleau, Gabriel-Dominique, Overzier, Roderik A.

“…We construct light cones for the semi-analytic galaxy formation simulation of Guo et al. and make mock catalogues for comparison with deep high-redshift…”
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Discovery of an overdensity of Lyman alpha emitters around a z ∼ 4 QSO with the Large Binocular Telescope by Adams, Scott M., Martini, Paul, Croxall, Kevin V., Overzier, Roderik A., Silverman, John D.

“…Measurements of QSO clustering in the SDSS show that z > 4 QSOs are some of the most highly biased objects in the Universe. Their large correlation lengths of…”
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Suppression of Low-mass Galaxy Formation around Quasars at z ∼ 2-3 by Uchiyama, Hisakazu, Kashikawa, Nobunari, Overzier, Roderik, Toshikawa, Jun, Onoue, Masafusa, Ishikawa, Shogo, Kubo, Mariko, Ito, Kei, Namiki, Shigeru, Liang, Yongming

“…We have carried out deep and wide field imaging observations with narrow bands, targeting 11 quasar fields to systematically study the possible…”
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