CHORUS. I. Cosmic HydrOgen Reionization Unveiled with Subaru: Overview. (6th November 2020)
- Record Type:
- Journal Article
- Title:
- CHORUS. I. Cosmic HydrOgen Reionization Unveiled with Subaru: Overview. (6th November 2020)
- Main Title:
- CHORUS. I. Cosmic HydrOgen Reionization Unveiled with Subaru: Overview
- Authors:
- Inoue, Akio K
Yamanaka, Satoshi
Ouchi, Masami
Iwata, Ikuru
Shimasaku, Kazuhiro
Taniguchi, Yoshiaki
Nagao, Tohru
Kashikawa, Nobunari
Ono, Yoshiaki
Mawatari, Ken
Shibuya, Takatoshi
Hayashi, Masao
Ikeda, Hiroyuki
Zhang, Haibin
Liang, Yongming
Lee, Chien-Hsiu
Hilmi, Miftahul
Kikuta, Satoshi
Kusakabe, Haruka
Furusawa, Hisanori
Hayashino, Tomoki
Kajisawa, Masaru
Matsuda, Yuichi
Nakajima, Kimihiko
Momose, Rieko
Harikane, Yuichi
Saito, Tomoki
Kodama, Tadayuki
Kikuchihara, Shotaro
Iye, Masanori
Goto, Tomotsugu
… (more) - Abstract:
- Abstract: To determine the dominant sources for cosmic reionization, the evolution history of the global ionizing fraction, and the topology of the ionized regions, we have conducted a deep imaging survey using four narrow-band (NB) and one intermediate-band (IB) filters on the Subaru/Hyper Suprime-Cam (HSC), called Cosmic HydrOgen Reionization Unveiled with Subaru (CHORUS). The central wavelengths and full-widths-at-half-maximum of the CHORUS filters are, respectively, 386.2 nm and 5.5 nm for NB387, 526.0 nm and 7.9 nm for NB527, 717.1 nm and 11.1 nm for NB718, 946.2 nm and 33.0 nm for IB945, and 971.2 nm and 11.2 nm for NB973 . This combination, including NB921 (921.5 nm and 13.5 nm) from the Subaru Strategic Program with HSC (HSC SSP), is carefully designed, as if they were playing a chorus, to observe multiple spectral features simultaneously, such as Lyman continuum, Lyα, C iv, and He ii for $z$ = 2–7. The observing field is the same as that of the deepest footprint of the HSC SSP in the COSMOS field and its effective area is about 1.6 deg 2 . We present an overview of the CHORUS project, which includes descriptions of the filter design philosophy, observations and data reduction, multiband photometric catalogs, assessments of the imaging quality, measurements of the number counts, and example use cases for the data. All the imaging data, photometric catalogs, masked pixel images, data of limiting magnitudes and point spread functions, results of completenessAbstract: To determine the dominant sources for cosmic reionization, the evolution history of the global ionizing fraction, and the topology of the ionized regions, we have conducted a deep imaging survey using four narrow-band (NB) and one intermediate-band (IB) filters on the Subaru/Hyper Suprime-Cam (HSC), called Cosmic HydrOgen Reionization Unveiled with Subaru (CHORUS). The central wavelengths and full-widths-at-half-maximum of the CHORUS filters are, respectively, 386.2 nm and 5.5 nm for NB387, 526.0 nm and 7.9 nm for NB527, 717.1 nm and 11.1 nm for NB718, 946.2 nm and 33.0 nm for IB945, and 971.2 nm and 11.2 nm for NB973 . This combination, including NB921 (921.5 nm and 13.5 nm) from the Subaru Strategic Program with HSC (HSC SSP), is carefully designed, as if they were playing a chorus, to observe multiple spectral features simultaneously, such as Lyman continuum, Lyα, C iv, and He ii for $z$ = 2–7. The observing field is the same as that of the deepest footprint of the HSC SSP in the COSMOS field and its effective area is about 1.6 deg 2 . We present an overview of the CHORUS project, which includes descriptions of the filter design philosophy, observations and data reduction, multiband photometric catalogs, assessments of the imaging quality, measurements of the number counts, and example use cases for the data. All the imaging data, photometric catalogs, masked pixel images, data of limiting magnitudes and point spread functions, results of completeness simulations, and source number counts are publicly available through the HSC SSP database. … (more)
- Is Part Of:
- Publications of the Astronomical Society of Japan. Volume 72:Number 6(2020:Dec.)
- Journal:
- Publications of the Astronomical Society of Japan
- Issue:
- Volume 72:Number 6(2020:Dec.)
- Issue Display:
- Volume 72, Issue 6 (2020)
- Year:
- 2020
- Volume:
- 72
- Issue:
- 6
- Issue Sort Value:
- 2020-0072-0006-0000
- Page Start:
- Page End:
- Publication Date:
- 2020-11-06
- Subjects:
- catalogs -- dark ages, reionization, first stars -- galaxies: high-redshift -- surveys
Astronomy -- Periodicals
520.5 - Journal URLs:
- http://pasj.asj.or.jp/ ↗
http://pasj.oxfordjournals.org/ ↗
http://www.oxfordjournals.org/ ↗ - DOI:
- 10.1093/pasj/psaa100 ↗
- Languages:
- English
- ISSNs:
- 0004-6264
- Deposit Type:
- Legaldeposit
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- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 7029.000000
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- 15238.xml