Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Frederick B. Davies"'
Autor:
Feige Wang, Jinyi Yang, Joseph F. Hennawi, Xiaohui Fan, Minghao Yue, Eduardo Bañados, Shane Bechtel, Fuyan Bian, Sarah Bosman, Jaclyn B. Champagne, Frederick B. Davies, Roberto Decarli, Emanuele Paolo Farina, Chiara Mazzucchelli, Bram Venemans, Fabian Walter
Publikováno v:
The Astrophysical Journal Letters, Vol 962, Iss 1, p L11 (2024)
Protoclusters, the progenitors of galaxy clusters, trace large scale structures in the early Universe and are important to our understanding of structure formation and galaxy evolution. To date, only a handful of protoclusters have been identified in
Externí odkaz:
https://doaj.org/article/d9cc483914194cd38e5d48a39e623667
Autor:
Feige Wang, Jinyi Yang, Xiaohui Fan, Bram Venemans, Roberto Decarli, Eduardo Bañados, Fabian Walter, Aaron J. Barth, Fuyan Bian, Frederick B. Davies, Anna-Christina Eilers, Emanuele Paolo Farina, Joseph F. Hennawi, Jiang-Tao Li, Chiara Mazzucchelli, Ran Wang, Xue-Bing Wu, Minghao Yue
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 1, p 9 (2024)
The [C ii ] 158 μ m emission line and the underlying far-infrared (FIR) dust continuum are important tracers for studying star formation and kinematic properties of early galaxies. We present a survey of the [C ii ] emission lines and FIR continua o
Externí odkaz:
https://doaj.org/article/3ca5a648856e4c0c9c5a76b59ee3cf9e
Autor:
Frederick B. Davies, Sarah E. I. Bosman, Prakash Gaikwad, Fahad Nasir, Joseph F. Hennawi, George D. Becker, Martin G. Haehnelt, Valentina D’Odorico, Manuela Bischetti, Anna-Christina Eilers, Laura C. Keating, Girish Kulkarni, Samuel Lai, Chiara Mazzucchelli, Yuxiang Qin, Sindhu Satyavolu, Feige Wang, Jinyi Yang, Yongda Zhu
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 134 (2024)
The variations in Ly α forest opacity observed at z > 5.3 between lines of sight to different background quasars are too strong to be caused by fluctuations in the density field alone. The leading hypothesis for the cause of this excess variance is
Externí odkaz:
https://doaj.org/article/2b86c9a6a1ff452ab720479c96d8d968
Autor:
Feige Wang, Jinyi Yang, Joseph F. Hennawi, Xiaohui Fan, Fengwu Sun, Jaclyn B. Champagne, Tiago Costa, Melanie Habouzit, Ryan Endsley, Zihao Li, Xiaojing Lin, Romain A. Meyer, Jan–Torge Schindler, Yunjing Wu, Eduardo Bañados, Aaron J. Barth, Aklant K. Bhowmick, Rebekka Bieri, Laura Blecha, Sarah Bosman, Zheng Cai, Luis Colina, Thomas Connor, Frederick B. Davies, Roberto Decarli, Gisella De Rosa, Alyssa B. Drake, Eiichi Egami, Anna-Christina Eilers, Analis E. Evans, Emanuele Paolo Farina, Zoltan Haiman, Linhua Jiang, Xiangyu Jin, Hyunsung D. Jun, Koki Kakiichi, Yana Khusanova, Girish Kulkarni, Mingyu Li, Weizhe Liu, Federica Loiacono, Alessandro Lupi, Chiara Mazzucchelli, Masafusa Onoue, Maria A. Pudoka, Sofía Rojas-Ruiz, Yue Shen, Michael A. Strauss, Wei Leong Tee, Benny Trakhtenbrot, Maxime Trebitsch, Bram Venemans, Marta Volonteri, Fabian Walter, Zhang-Liang Xie, Minghao Yue, Haowen Zhang, Huanian Zhang, Siwei Zou
Publikováno v:
The Astrophysical Journal Letters, Vol 951, Iss 1, p L4 (2023)
We present the first results from the JWST program A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE). This program represents an imaging and spectroscopic survey of 25 reionization-era quasars and their environments by utilizing
Externí odkaz:
https://doaj.org/article/ddc3cfff06e4420494aa2d447f16d97b
Autor:
Jinyi Yang, Feige Wang, Xiaohui Fan, Joseph F. Hennawi, Aaron J. Barth, Eduardo Bañados, Fengwu Sun, Weizhe Liu, Zheng Cai, Linhua Jiang, Zihao Li, Masafusa Onoue, Jan-Torge Schindler, Yue Shen, Yunjing Wu, Aklant K. Bhowmick, Rebekka Bieri, Laura Blecha, Sarah Bosman, Jaclyn B. Champagne, Luis Colina, Thomas Connor, Tiago Costa, Frederick B. Davies, Roberto Decarli, Gisella De Rosa, Alyssa B. Drake, Eiichi Egami, Anna-Christina Eilers, Analis E. Evans, Emanuele Paolo Farina, Melanie Habouzit, Zoltan Haiman, Xiangyu Jin, Hyunsung D. Jun, Koki Kakiichi, Yana Khusanova, Girish Kulkarni, Federica Loiacono, Alessandro Lupi, Chiara Mazzucchelli, Zhiwei Pan, Sofía Rojas-Ruiz, Michael A. Strauss, Wei Leong Tee, Benny Trakhtenbrot, Maxime Trebitsch, Bram Venemans, Marianne Vestergaard, Marta Volonteri, Fabian Walter, Zhang-Liang Xie, Minghao Yue, Haowen Zhang, Huanian Zhang, Siwei Zou
Publikováno v:
The Astrophysical Journal Letters, Vol 951, Iss 1, p L5 (2023)
Studies of rest-frame optical emission in quasars at z > 6 have historically been limited by the wavelengths accessible by ground-based telescopes. The James Webb Space Telescope (JWST) now offers the opportunity to probe this emission deep into the
Externí odkaz:
https://doaj.org/article/8de574c47d28453a88c84f7344cbf379
Autor:
Holly M. Christenson, George D. Becker, Anson D’Aloisio, Frederick B. Davies, Yongda Zhu, Elisa Boera, Fahad Nasir, Steven R. Furlanetto, Matthew A. Malkan
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 2, p 138 (2023)
Observed scatter in the Ly α opacity of quasar sightlines at z < 6 has motivated measurements of the correlation between Ly α opacity and galaxy density, as models that predict this scatter make strong and sometimes opposite predictions for how the
Externí odkaz:
https://doaj.org/article/1ce2152e03fa4cf189abf14eaf93d51d
Autor:
Yongda Zhu, George D. Becker, Holly M. Christenson, Anson D’Aloisio, Sarah E. I. Bosman, Tom Bakx, Valentina D’Odorico, Manuela Bischetti, Christopher Cain, Frederick B. Davies, Rebecca L. Davies, Anna-Christina Eilers, Xiaohui Fan, Prakash Gaikwad, Martin G. Haehnelt, Laura C. Keating, Girish Kulkarni, Samuel Lai, Hai-Xia Ma, Andrei Mesinger, Yuxiang Qin, Sindhu Satyavolu, Tsutomu T. Takeuchi, Hideki Umehata, Jinyi Yang
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 2, p 115 (2023)
The mean free path of ionizing photons, λ _mfp , is a critical parameter for modeling the intergalactic medium (IGM) both during and after reionization. We present direct measurements of λ _mfp from QSO spectra over the redshift range 5 < z < 6, in
Externí odkaz:
https://doaj.org/article/598d97dba9064e05a6e4de4028082ba7
Autor:
Minghao Yue, Anna-Christina Eilers, Robert A. Simcoe, Sirio Belli, Frederick B. Davies, David DePalma, Joseph F. Hennawi, Charlotte A. Mason, Julian B. Muñoz, Erica J. Nelson, Sandro Tacchella
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 105 (2023)
We test the impact of gravitational lensing on the lifetime estimates of seven high-redshift quasars at redshift z ≳ 6. The targeted quasars are identified by their small observed proximity zone sizes, which indicate extremely short quasar lifetime
Externí odkaz:
https://doaj.org/article/90e92c625f7a4f00ae04e2ada6715bca
Autor:
Xiangyu Jin, Jinyi Yang, Xiaohui Fan, Feige Wang, Eduardo Bañados, Fuyan Bian, Frederick B. Davies, Anna-Christina Eilers, Emanuele Paolo Farina, Joseph F. Hennawi, Fabio Pacucci, Bram Venemans, Fabian Walter
Publikováno v:
The Astrophysical Journal, Vol 942, Iss 2, p 59 (2023)
Cosmic reionization was the last major phase transition of hydrogen from neutral to highly ionized in the intergalactic medium (IGM). Current observations show that the IGM is significantly neutral at z > 7 and largely ionized by z ∼ 5.5. However,
Externí odkaz:
https://doaj.org/article/e3808152080d4f459ce4b5764ab80f1a
Autor:
Irham Taufik Andika, Knud Jahnke, Arjen van der Wel, Eduardo Bañados, Sarah E. I. Bosman, Frederick B. Davies, Anna-Christina Eilers, Anton Timur Jaelani, Chiara Mazzucchelli, Masafusa Onoue, Jan-Torge Schindler
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 2, p 150 (2023)
Over the last two decades, around 300 quasars have been discovered at z ≳ 6, yet only one has been identified as being strongly gravitationally lensed. We explore a new approach—enlarging the permitted spectral parameter space, while introducing
Externí odkaz:
https://doaj.org/article/e6750fe19e7e49b9a5868fcc7ef228b6