Initial results from nobeyama molecular gas observations of distant bright galaxies

Daisuke Iono; Bunyo Hatsukade; Kotaro Kohno; Ryohei Kawabe; Soh Ikarashi; Kohei Ichikawa; Tadayuki Kodama; Kentaro Motohara; Taku Nakajima; Koichiro Nakanishi; Kouji Ohta; Kazuaki Ota; Toshiki Saito; Kenta Suzuki; Ken Ichi Tadaki; Yoichi Tamura; Junko Ueda; Hideki Umehata; Kiyoto Yabe; Tessei Yoshida; Suraphong Yuma; Nario Kuno; Shuro Takano; Hiroyuki Iwashita; Kazuyuki Handa; Aya Higuchi; Akihiko Hirota; Shinichi Ishikawa; Kimihiro Kimura; Jun Maekawa; Hiroshi Mikoshiba; Chieko Miyazawa; Kazuhiko Miyazawa; Kazuyuki Muraoka; Hideo Ogawa; Sachiko Onodera; Yasufumi Saito; Takeshi Sakai; Shigeru Takahashi; Min S. Yun

doi:10.1093/pasj/64.4.L2

Initial results from nobeyama molecular gas observations of distant bright galaxies

Daisuke Iono, Bunyo Hatsukade, Kotaro Kohno, Ryohei Kawabe, Soh Ikarashi, Kohei Ichikawa, Tadayuki Kodama, Kentaro Motohara, Taku Nakajima, Koichiro Nakanishi, Kouji Ohta, Kazuaki Ota, Toshiki Saito, Kenta Suzuki, Ken Ichi Tadaki, Yoichi Tamura, Junko Ueda, Hideki Umehata, Kiyoto Yabe, Tessei YoshidaSuraphong Yuma, Nario Kuno, Shuro Takano, Hiroyuki Iwashita, Kazuyuki Handa, Aya Higuchi, Akihiko Hirota, Shinichi Ishikawa, Kimihiro Kimura, Jun Maekawa, Hiroshi Mikoshiba, Chieko Miyazawa, Kazuhiko Miyazawa, Kazuyuki Muraoka, Hideo Ogawa, Sachiko Onodera, Yasufumi Saito, Takeshi Sakai, Shigeru Takahashi, Min S. Yun

Research output: Contribution to journal › Review article › peer-review

14 Citations (Scopus)

Abstract

We present initial results from the CO survey toward high-redshift galaxies using the Nobeyama 45m telescope. Using a new wide bandwidth spectrometer equipped with a two-beam SIS receiver, we have obtained three new detections of high-redshift (z = 1.6-3.4) submillimeter galaxies (SXDF 1100.001/HXMM02, SDP9, and SDP17), one tentative detection (SDSS J160705+533558), and one non-detection (COSMOS-AzTEC1). The galaxies observed during the commissioning phase are sources with known spectroscopic redshifts from previous optical or wide-band submillimeter spectroscopy. The derived molecular gas mass and line widths from Gaussian fits are ∼ 10¹¹ M_⊙ and 430-530km s ^-1, respectively, which are consistent with previous CO observations of distant submillimeter galaxies and quasars. The spectrometer, which realizes a maximum of 32 GHz instantaneous bandwidth, will provide new science capabilities at the Nobeyama 45m telescope, allowing us to determine redshifts of bright submillimeter selected galaxies without any prior redshift information.

Original language	English
Pages (from-to)	L2
Journal	Publications of the Astronomical Society of Japan
Volume	64
Issue number	4
DOIs	https://doi.org/10.1093/pasj/64.4.L2
Publication status	Published - 2012 Aug 25

Keywords

Cosmology
High-redshift - galaxies
Observations - galaxies
Starburst - telescopes

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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Iono, D., Hatsukade, B., Kohno, K., Kawabe, R., Ikarashi, S., Ichikawa, K., Kodama, T., Motohara, K., Nakajima, T., Nakanishi, K., Ohta, K., Ota, K., Saito, T., Suzuki, K., Tadaki, K. I., Tamura, Y., Ueda, J., Umehata, H., Yabe, K., ... Yun, M. S. (2012). Initial results from nobeyama molecular gas observations of distant bright galaxies. Publications of the Astronomical Society of Japan, 64(4), L2. https://doi.org/10.1093/pasj/64.4.L2

Initial results from nobeyama molecular gas observations of distant bright galaxies. / Iono, Daisuke; Hatsukade, Bunyo; Kohno, Kotaro; Kawabe, Ryohei; Ikarashi, Soh; Ichikawa, Kohei ; Kodama, Tadayuki; Motohara, Kentaro; Nakajima, Taku; Nakanishi, Koichiro; Ohta, Kouji; Ota, Kazuaki; Saito, Toshiki; Suzuki, Kenta; Tadaki, Ken Ichi; Tamura, Yoichi; Ueda, Junko; Umehata, Hideki; Yabe, Kiyoto; Yoshida, Tessei; Yuma, Suraphong; Kuno, Nario; Takano, Shuro; Iwashita, Hiroyuki; Handa, Kazuyuki; Higuchi, Aya; Hirota, Akihiko; Ishikawa, Shinichi; Kimura, Kimihiro; Maekawa, Jun; Mikoshiba, Hiroshi; Miyazawa, Chieko; Miyazawa, Kazuhiko; Muraoka, Kazuyuki; Ogawa, Hideo; Onodera, Sachiko; Saito, Yasufumi; Sakai, Takeshi; Takahashi, Shigeru; Yun, Min S.

In: Publications of the Astronomical Society of Japan, Vol. 64, No. 4, 25.08.2012, p. L2.

Research output: Contribution to journal › Review article › peer-review

Iono, D, Hatsukade, B, Kohno, K, Kawabe, R, Ikarashi, S, Ichikawa, K , Kodama, T, Motohara, K, Nakajima, T, Nakanishi, K, Ohta, K, Ota, K, Saito, T, Suzuki, K, Tadaki, KI, Tamura, Y, Ueda, J, Umehata, H, Yabe, K, Yoshida, T, Yuma, S, Kuno, N, Takano, S, Iwashita, H, Handa, K, Higuchi, A, Hirota, A, Ishikawa, S, Kimura, K, Maekawa, J, Mikoshiba, H, Miyazawa, C, Miyazawa, K, Muraoka, K, Ogawa, H, Onodera, S, Saito, Y, Sakai, T, Takahashi, S & Yun, MS 2012, 'Initial results from nobeyama molecular gas observations of distant bright galaxies', Publications of the Astronomical Society of Japan, vol. 64, no. 4, pp. L2. https://doi.org/10.1093/pasj/64.4.L2

Iono, Daisuke ; Hatsukade, Bunyo ; Kohno, Kotaro ; Kawabe, Ryohei ; Ikarashi, Soh ; Ichikawa, Kohei ; Kodama, Tadayuki ; Motohara, Kentaro ; Nakajima, Taku ; Nakanishi, Koichiro ; Ohta, Kouji ; Ota, Kazuaki ; Saito, Toshiki ; Suzuki, Kenta ; Tadaki, Ken Ichi ; Tamura, Yoichi ; Ueda, Junko ; Umehata, Hideki ; Yabe, Kiyoto ; Yoshida, Tessei ; Yuma, Suraphong ; Kuno, Nario ; Takano, Shuro ; Iwashita, Hiroyuki ; Handa, Kazuyuki ; Higuchi, Aya ; Hirota, Akihiko ; Ishikawa, Shinichi ; Kimura, Kimihiro ; Maekawa, Jun ; Mikoshiba, Hiroshi ; Miyazawa, Chieko ; Miyazawa, Kazuhiko ; Muraoka, Kazuyuki ; Ogawa, Hideo ; Onodera, Sachiko ; Saito, Yasufumi ; Sakai, Takeshi ; Takahashi, Shigeru ; Yun, Min S. / Initial results from nobeyama molecular gas observations of distant bright galaxies. In: Publications of the Astronomical Society of Japan. 2012 ; Vol. 64, No. 4. pp. L2.

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title = "Initial results from nobeyama molecular gas observations of distant bright galaxies",

abstract = "We present initial results from the CO survey toward high-redshift galaxies using the Nobeyama 45m telescope. Using a new wide bandwidth spectrometer equipped with a two-beam SIS receiver, we have obtained three new detections of high-redshift (z = 1.6-3.4) submillimeter galaxies (SXDF 1100.001/HXMM02, SDP9, and SDP17), one tentative detection (SDSS J160705+533558), and one non-detection (COSMOS-AzTEC1). The galaxies observed during the commissioning phase are sources with known spectroscopic redshifts from previous optical or wide-band submillimeter spectroscopy. The derived molecular gas mass and line widths from Gaussian fits are ∼ 1011 M⊙ and 430-530km s -1, respectively, which are consistent with previous CO observations of distant submillimeter galaxies and quasars. The spectrometer, which realizes a maximum of 32 GHz instantaneous bandwidth, will provide new science capabilities at the Nobeyama 45m telescope, allowing us to determine redshifts of bright submillimeter selected galaxies without any prior redshift information.",

keywords = "Cosmology, High-redshift - galaxies, Observations - galaxies, Starburst - telescopes",

author = "Daisuke Iono and Bunyo Hatsukade and Kotaro Kohno and Ryohei Kawabe and Soh Ikarashi and Kohei Ichikawa and Tadayuki Kodama and Kentaro Motohara and Taku Nakajima and Koichiro Nakanishi and Kouji Ohta and Kazuaki Ota and Toshiki Saito and Kenta Suzuki and Tadaki, {Ken Ichi} and Yoichi Tamura and Junko Ueda and Hideki Umehata and Kiyoto Yabe and Tessei Yoshida and Suraphong Yuma and Nario Kuno and Shuro Takano and Hiroyuki Iwashita and Kazuyuki Handa and Aya Higuchi and Akihiko Hirota and Shinichi Ishikawa and Kimihiro Kimura and Jun Maekawa and Hiroshi Mikoshiba and Chieko Miyazawa and Kazuhiko Miyazawa and Kazuyuki Muraoka and Hideo Ogawa and Sachiko Onodera and Yasufumi Saito and Takeshi Sakai and Shigeru Takahashi and Yun, {Min S.}",

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T1 - Initial results from nobeyama molecular gas observations of distant bright galaxies

AU - Iono, Daisuke

AU - Hatsukade, Bunyo

AU - Kohno, Kotaro

AU - Kawabe, Ryohei

AU - Ikarashi, Soh

AU - Ichikawa, Kohei

AU - Kodama, Tadayuki

AU - Motohara, Kentaro

AU - Nakajima, Taku

AU - Nakanishi, Koichiro

AU - Ohta, Kouji

AU - Ota, Kazuaki

AU - Saito, Toshiki

AU - Suzuki, Kenta

AU - Tadaki, Ken Ichi

AU - Tamura, Yoichi

AU - Ueda, Junko

AU - Umehata, Hideki

AU - Yabe, Kiyoto

AU - Yoshida, Tessei

AU - Yuma, Suraphong

AU - Kuno, Nario

AU - Takano, Shuro

AU - Iwashita, Hiroyuki

AU - Handa, Kazuyuki

AU - Higuchi, Aya

AU - Hirota, Akihiko

AU - Ishikawa, Shinichi

AU - Kimura, Kimihiro

AU - Maekawa, Jun

AU - Mikoshiba, Hiroshi

AU - Miyazawa, Chieko

AU - Miyazawa, Kazuhiko

AU - Muraoka, Kazuyuki

AU - Ogawa, Hideo

AU - Onodera, Sachiko

AU - Saito, Yasufumi

AU - Sakai, Takeshi

AU - Takahashi, Shigeru

AU - Yun, Min S.

PY - 2012/8/25

Y1 - 2012/8/25

N2 - We present initial results from the CO survey toward high-redshift galaxies using the Nobeyama 45m telescope. Using a new wide bandwidth spectrometer equipped with a two-beam SIS receiver, we have obtained three new detections of high-redshift (z = 1.6-3.4) submillimeter galaxies (SXDF 1100.001/HXMM02, SDP9, and SDP17), one tentative detection (SDSS J160705+533558), and one non-detection (COSMOS-AzTEC1). The galaxies observed during the commissioning phase are sources with known spectroscopic redshifts from previous optical or wide-band submillimeter spectroscopy. The derived molecular gas mass and line widths from Gaussian fits are ∼ 1011 M⊙ and 430-530km s -1, respectively, which are consistent with previous CO observations of distant submillimeter galaxies and quasars. The spectrometer, which realizes a maximum of 32 GHz instantaneous bandwidth, will provide new science capabilities at the Nobeyama 45m telescope, allowing us to determine redshifts of bright submillimeter selected galaxies without any prior redshift information.

AB - We present initial results from the CO survey toward high-redshift galaxies using the Nobeyama 45m telescope. Using a new wide bandwidth spectrometer equipped with a two-beam SIS receiver, we have obtained three new detections of high-redshift (z = 1.6-3.4) submillimeter galaxies (SXDF 1100.001/HXMM02, SDP9, and SDP17), one tentative detection (SDSS J160705+533558), and one non-detection (COSMOS-AzTEC1). The galaxies observed during the commissioning phase are sources with known spectroscopic redshifts from previous optical or wide-band submillimeter spectroscopy. The derived molecular gas mass and line widths from Gaussian fits are ∼ 1011 M⊙ and 430-530km s -1, respectively, which are consistent with previous CO observations of distant submillimeter galaxies and quasars. The spectrometer, which realizes a maximum of 32 GHz instantaneous bandwidth, will provide new science capabilities at the Nobeyama 45m telescope, allowing us to determine redshifts of bright submillimeter selected galaxies without any prior redshift information.

KW - Cosmology

KW - High-redshift - galaxies

KW - Observations - galaxies

KW - Starburst - telescopes

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