A quasar discovered at redshift 6.6 from Pan-STARRS1

Ji Jia Tang; Tomotsugu Goto; Youichi Ohyama; Wen Ping Chen; Fabian Walter; Bram Venemans; Kenneth C. Chambers; Eduardo Bañados; Roberto Decarli; Xiaohui Fan; Emanuele Farina; Chiara Mazzucchelli; Nick Kaiser; Eugene A. Magnier

doi:10.1093/mnras/stw3287

A quasar discovered at redshift 6.6 from Pan-STARRS1

Ji Jia Tang, Tomotsugu Goto, Youichi Ohyama, Wen Ping Chen, Fabian Walter, Bram Venemans, Kenneth C. Chambers, Eduardo Bañados, Roberto Decarli, Xiaohui Fan, Emanuele Farina, Chiara Mazzucchelli, Nick Kaiser, Eugene A. Magnier

Astronomy

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33 Scopus citations

Abstract

Luminous high-redshift quasars can be used to probe of the intergalactic medium in the early universe because their UV light is absorbed by the neutral hydrogen along the line of sight. They help us to measure the neutral hydrogen fraction of the high-z universe, shedding light on the end of reionization epoch. In this paper, we present a discovery of a new quasar (PSO J006.1240+39.2219) at redshift z = 6.61 ± 0.02 from Panoramic Survey Telescope & Rapid Response System 1. Including this quasar, there are nine quasars above z > 6.5 up to date. The estimated continuum brightness is M₁₄₅₀ = −25.96 ± 0.08. PSO J006.1240+39.2219 has a strong Ly α emission compared with typical low-redshift quasars, but the measured near-zone region size is R_NZ = 3.2 ± 1.1 proper megaparsecs, which is consistent with other quasars at z ∼ 6.

Original language	English (US)
Pages (from-to)	4568-4572
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society
Volume	466
Issue number	4
DOIs	https://doi.org/10.1093/mnras/stw3287
State	Published - May 1 2017

Keywords

Dark ages
First stars
Quasars: general
Quasars: individual
Reionization

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/stw3287

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title = "A quasar discovered at redshift 6.6 from Pan-STARRS1",

abstract = "Luminous high-redshift quasars can be used to probe of the intergalactic medium in the early universe because their UV light is absorbed by the neutral hydrogen along the line of sight. They help us to measure the neutral hydrogen fraction of the high-z universe, shedding light on the end of reionization epoch. In this paper, we present a discovery of a new quasar (PSO J006.1240+39.2219) at redshift z = 6.61 ± 0.02 from Panoramic Survey Telescope & Rapid Response System 1. Including this quasar, there are nine quasars above z > 6.5 up to date. The estimated continuum brightness is M1450 = −25.96 ± 0.08. PSO J006.1240+39.2219 has a strong Ly α emission compared with typical low-redshift quasars, but the measured near-zone region size is RNZ = 3.2 ± 1.1 proper megaparsecs, which is consistent with other quasars at z ∼ 6.",

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AU - Tang, Ji Jia

AU - Goto, Tomotsugu

AU - Ohyama, Youichi

AU - Chen, Wen Ping

AU - Walter, Fabian

AU - Venemans, Bram

AU - Chambers, Kenneth C.

AU - Bañados, Eduardo

AU - Decarli, Roberto

AU - Fan, Xiaohui

AU - Farina, Emanuele

AU - Mazzucchelli, Chiara

AU - Kaiser, Nick

AU - Magnier, Eugene A.

PY - 2017/5/1

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N2 - Luminous high-redshift quasars can be used to probe of the intergalactic medium in the early universe because their UV light is absorbed by the neutral hydrogen along the line of sight. They help us to measure the neutral hydrogen fraction of the high-z universe, shedding light on the end of reionization epoch. In this paper, we present a discovery of a new quasar (PSO J006.1240+39.2219) at redshift z = 6.61 ± 0.02 from Panoramic Survey Telescope & Rapid Response System 1. Including this quasar, there are nine quasars above z > 6.5 up to date. The estimated continuum brightness is M1450 = −25.96 ± 0.08. PSO J006.1240+39.2219 has a strong Ly α emission compared with typical low-redshift quasars, but the measured near-zone region size is RNZ = 3.2 ± 1.1 proper megaparsecs, which is consistent with other quasars at z ∼ 6.

AB - Luminous high-redshift quasars can be used to probe of the intergalactic medium in the early universe because their UV light is absorbed by the neutral hydrogen along the line of sight. They help us to measure the neutral hydrogen fraction of the high-z universe, shedding light on the end of reionization epoch. In this paper, we present a discovery of a new quasar (PSO J006.1240+39.2219) at redshift z = 6.61 ± 0.02 from Panoramic Survey Telescope & Rapid Response System 1. Including this quasar, there are nine quasars above z > 6.5 up to date. The estimated continuum brightness is M1450 = −25.96 ± 0.08. PSO J006.1240+39.2219 has a strong Ly α emission compared with typical low-redshift quasars, but the measured near-zone region size is RNZ = 3.2 ± 1.1 proper megaparsecs, which is consistent with other quasars at z ∼ 6.

KW - Dark ages

KW - First stars

KW - Quasars: general

KW - Quasars: individual

KW - Reionization

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A quasar discovered at redshift 6.6 from Pan-STARRS1

Abstract

Keywords

ASJC Scopus subject areas

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