Details

Autor(en) / Beteiligte

• Jeon, Yiseul
• Im, Myungshin
• Kim, Dohyeong
• Kim, Yongjung
• Jun, Hyunsung David
• Pak, Soojong
• Taak, Yoon Chan
• Baek, Giseon
• Choi, Changsu
• Choi, Nahyun
• Hong, Jueun
• Hyun, Minhee
• Ji, Tae-Geun
• Karouzos, Marios
• Kim, Duho
• Kim, Jae-Woo
• Kim, Ji Hoon
• Kim, Minjin
• Kim, Sanghyuk
• Lee, Hye-In
• Lee, Seong-Kook
• Park, Won-Kee
• Park, Woojin
• Yoon, Yongmin

Titel

The Infrared Medium-deep Survey. III. Survey of Luminous Quasars at 4.7 ≤ z ≤ 5.4

Ist Teil von

• The Astrophysical journal. Supplement series, 2017-08, Vol.231 (2), p.16

Ort / Verlag

Saskatoon: IOP Publishing

Erscheinungsjahr

2017

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Abstract We present the first results of our survey for high-redshift quasars at . The search for quasars in this redshift range has been known to be challenging due to the limitations of the filter sets used in previous studies. We conducted a quasar survey for two specific redshift ranges, 4.60 ≤ z ≤ 5.40 and 5.50 ≤ z ≤ 6.05, using multi-wavelength data that include observations made with custom-designed filters, is and iz . Using these filters and a new selection technique, we were able to reduce the fraction of interlopers. Through optical spectroscopy, we confirmed six quasars at 4.7 ≤ z ≤ 5.4 with that recently were discovered independently by another group. We estimated black hole masses and Eddington ratios of four of these quasars from optical and near-infrared spectra, and found that these quasars are undergoing nearly Eddington-limited accretion that is consistent with the rapid growth of supermassive black holes in luminous quasars at z ∼ 5.