Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Zhen-Ya Zheng"'
Autor:
Yuanhang Ning, Zheng Cai, Xiaojing Lin, Zhen-Ya Zheng, Xiaotong Feng, Mingyu Li, Qiong Li, Daniele Spinoso, Yunjing Wu, Haibin Zhang
Publikováno v:
The Astrophysical Journal Letters, Vol 963, Iss 2, p L38 (2024)
We study a sample of 14 spectroscopically confirmed Ly α emitters (LAEs) in the late era of reionization (at redshift z ≈ 6) based on the JWST/NIRCam imaging data set. These LAEs with high Ly α luminosity of L (Ly α ) ∼10 ^42.4 –10 ^43.4 erg
Externí odkaz:
https://doaj.org/article/c257f0de42dc44bf929bd968376eeb8d
Autor:
Yibin Luo, Lulu Fan, Yongming Liang, Weida Hu, Junxian Wang, Zhen-ya Zheng, Zheyu Lin, Bojun Tao, Zesen Lin, Minxuan Cai, Mengqiu Huang, Zhen Wan, Yongling Tang
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 51 (2024)
Hot dust-obscured galaxies (hot DOGs) are a population of hyperluminous, heavily obscured quasars discovered by the Wide-field Infrared Survey Explorer all-sky survey at high redshift. Observations suggested the growth of these galaxies may be driven
Externí odkaz:
https://doaj.org/article/3dabfd88ef724c73bcddc5e702a6d0d9
Autor:
Shuairu Zhu, Zhen-Ya Zheng, James Rhoads, Junxian Wang, Linhua Jiang, Chunyan Jiang, Fang-Ting Yuan, P. T. Rahna, Weida Hu, Ruqiu Lin, Huanyuan Shan, Chun Xu, Leopoldo Infante, L. Felipe Barrientos, Xianzhong Zheng, Guanwen Fang, Zhixiong Liang
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 271, Iss 1, p 5 (2024)
We present the first results of the Hubble Deep Hydrogen Alpha (HDH α ) project, which analyzes the space-borne deep H α narrowband imaging data in the GOODS-S region. The HDH α data comprises 72 orbits’ images taken with the Hubble Space Telesc
Externí odkaz:
https://doaj.org/article/4d1422682ad7468aa26b8700df54563f
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 22 (2023)
We present a study of Lyman continuum (LyC) emission in a sample of ∼150 Ly α emitters (LAEs) at z ≈ 3.1 in the Subaru-XMM Deep Survey field. These LAEs were previously selected using the narrowband technique and spectroscopically confirmed with
Externí odkaz:
https://doaj.org/article/eab32744d4f54ecfb2f3d29bcac58d5b
Autor:
Qi-Qi Wu, Shi-Long Liao, Xiang Ji, Zhao-Xiang Qi, Zhen-Ya Zheng, Ru-Qiu Lin, Ying-Kang Zhang, Tao An
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
Given their extremely large distances and small apparent sizes, quasars are generally considered as objects with near-zero parallax and proper motion. However, some special quasars may have abnormal astrometric characteristics, such as quasar pairs,
Externí odkaz:
https://doaj.org/article/8f7f3a8a2ee84c9e8ce5c060638ed0e1
Autor:
Wu, Qi-Qi, Liao, Shi-Long, Ji, Xiang, Qi, Zhao-Xiang, Lin, Zhen-Ya Zheng Ru-Qiu, Zhang, Ying-Kang, An, Tao
Publikováno v:
March 2022 | Volume 9 | Article 822768
Given their extremely large distances and small apparent sizes, quasars are generally considered as objects with near-zero parallax and proper motion. However, some special quasars may have abnormal astrometric characteristics, such as quasar pairs,
Externí odkaz:
http://arxiv.org/abs/2203.03197
Autor:
Liming Dou, Ning Jiang, Tinggui Wang, Xinwen Shu, Huan Yang, Zhen Pan, Jiazheng Zhu, Tao An, Zhen-Ya Zheng, Yanli Ai
Recently we discovered an unprecedented supermassive black hole binary (SMBHB) candidate in the nearby Seyfert galaxy SDSS J1430+2303, which is predicted to merge within three years. X-ray spectroscopy may bring unique kinematic evidence for the last
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9def3ea8c8693998e61b7d6f052b0bf8
http://arxiv.org/abs/2208.11968
http://arxiv.org/abs/2208.11968
Autor:
Linhua Jiang, Yuanhang Ning, Xiaohui Fan, Luis C. Ho, Bin Luo, Feige Wang, Jin Wu, Xue-Bing Wu, Jinyi Yang, Zhen-Ya Zheng
Cosmic (hydrogen) reionization marks one of the major phase transitions of the universe at redshift z >= 6. During this epoch, hydrogen atoms in the intergalactic medium (IGM) were ionized by Lyman continuum (LyC) photons. However, it remains challen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d4ecd4d2223421da1515b0eb0efbc6f
http://arxiv.org/abs/2206.07825
http://arxiv.org/abs/2206.07825
Autor:
Alistair R. Walker, L. F. Barrientos, Isak Wold, Alicia Coughlin, James E. Rhoads, Leopoldo Infante, Ali Ahmad Khostovan, Weida Hu, S. Malhotra, Jun Xian Wang, Zhen-Ya Zheng, F. Valdes, Lucia A. Perez, John Pharo, Santosh Harish, C. Jiang
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 503:5115-5133
The H$\alpha$ equivalent width (EW) is an observational proxy for specific star formation rate (sSFR) and a tracer of episodic star-formation activity. Previous assessments show that EW strongly anti-correlates with stellar mass as $M^{-0.25}$ simila
Autor:
Junxian Wang, Santosh Harish, Lucia A. Perez, Alistair R. Walker, Xu Kong, Xianzhong Zheng, Ali Ahmad Khostovan, Leopoldo Infante, Isak Wold, Chunyan Jiang, Alicia Coughlin, Jorge González-López, Weida Hu, John Pharo, Huan Yang, Zhen-Ya Zheng, Gonzalo Prieto, L. Felipe Barrientos, James E. Rhoads, Gaspar Galaz, Wenyong Kang, Pascale Hibon, Francisco Valdes, Sangeeta Malhotra
Publikováno v:
Nature Astronomy. 5:485-490
Protoclusters, the progenitors of the most massive structures in the Universe, have been identified at redshifts of up to 6.6. Besides exploring early structure formation, searching for protoclusters at even higher redshifts is particularly useful to