Subaru High- z Exploration of Low-luminosity Quasars (SHELLQs). XVI. 69 New Quasars at 5.8 < z < 7.0

We present the spectroscopic discovery of 69 quasars at 5.8 < z < 7.0, drawn from the Hyper Suprime-Cam (HSC) Subaru Strategic Program (SSP) imaging survey data. This is the 16th publication from the Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) project, and it completes identi...

Descripción completa

Detalles Bibliográficos
Autores: Matsuoka, Yoshiki, Iwasawa, Kazushi, Onoue, Masafusa, Izumi, Takuma, Kashikawa, Nobunari, Strauss, Michael A., Imanishi, Masatoshi, Nagao, Tohru, Akiyama, Masayuki, Silverman, John D., Asami, Naoko, Bosch, Jaime, Furusawa, Hisanori, Goto, Tomotsugu, Gunn, James E., Harikane, Yuichi, Ikeda, Hiroyuki, Ishimoto, Rikako, Kawaguchi, Toshihiro, Kato, Nanako, Kikuta, Satoshi, Kohno, Kotaro, Komiyama, Yutaka, Lee, Chien-Hsiu, Lupton, Robert H., Minezaki, Takeo, Miyazaki, Satoshi, Murayama, Hitoshi, Nishizawa, Atsushi J., Oguri, Masamune, Ono, Yoshiaki, Ouchi, Masami, Price, Paul A., Sameshima, Hiroaki, Sugiyama, N., Tait, Philip J., Takada, Masahiro, Takahashi, Ayumi, Tanaka, Masayuki, Toba, Yoshiki, Utsumi, Yousuke, Wang, Shiang-Yu, Yamashita, Takuji
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::6886be027343c1f260bd10fc196870a3
Acceso en línea:http://hdl.handle.net/10261/277875
Access Level:acceso abierto
Palabra clave:Reionization
Quasars
Supermassive black holes
High-redshift galaxies
Descripción
Sumario:We present the spectroscopic discovery of 69 quasars at 5.8 < z < 7.0, drawn from the Hyper Suprime-Cam (HSC) Subaru Strategic Program (SSP) imaging survey data. This is the 16th publication from the Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) project, and it completes identification of all but the faintest candidates (i.e., i-band dropouts with z AB < 24 and y-band detections, and z-band dropouts with y AB < 24) with Bayesian quasar probability PQB>0.1 in the HSC-SSP third public data release (PDR3). The sample reported here also includes three quasars with PQB<0.1 at z ∼6.6, which we selected in an effort to completely cover the reddest point sources with simple color cuts. The number of high-z quasars discovered in SHELLQs has now grown to 162, including 23 type II quasar candidates. This paper also presents identification of seven galaxies at 5.6 < z < 6.7, an [O iii] emitter at z = 0.954, and 31 Galactic cool stars and brown dwarfs. High-z quasars and galaxies compose 75% and 16%, respectively, of all the spectroscopic SHELLQs objects that pass our latest selection algorithm with the PDR3 photometry. That is, a total of 91% of the objects lie at z > 5.6. This demonstrates that the algorithm has very high efficiency, even though we are probing an unprecedentedly low luminosity population down to M 1450 ∼-21 mag.

Similares en LA Referencia