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  The IRAM/GISMO 2 mm Survey in the COSMOS Field

Magnelli, B., Karim, A., Staguhn, J., Kovács, A., Jiménez-Andrade, E. F., Casey, C. M., Zavala, J. A., Schinnerer, E., Sargent, M., Aravena, M., Bertoldi, F., Capak, P. L., Riechers, D. A., & Benford, D. J. (2019). The IRAM/GISMO 2 mm Survey in the COSMOS Field. The Astrophysical Journal, 877.

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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-0005-D080-E 版のパーマリンク: https://hdl.handle.net/21.11116/0000-0005-D081-D
資料種別: 学術論文

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URL:
https://ui.adsabs.harvard.edu/abs/2019ApJ...877...45M (全文テキスト(全般))
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 作成者:
Magnelli, B.1, 著者
Karim, A.1, 著者
Staguhn, J.1, 著者
Kovács, A.1, 著者
Jiménez-Andrade, E. F.1, 著者
Casey, C. M.1, 著者
Zavala, J. A.1, 著者
Schinnerer, E.1, 著者
Sargent, M.1, 著者
Aravena, M.1, 著者
Bertoldi, F.1, 著者
Capak, P. L.1, 著者
Riechers, D. A.1, 著者
Benford, D. J.1, 著者
所属:
1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

内容説明

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キーワード: galaxies: evolution galaxies: formation galaxies: high-redshift galaxies: luminosity function mass function galaxies: photometry galaxies: starburst Astrophysics - Astrophysics of Galaxies
 要旨: We present deep continuum observations at a wavelength of 2 mm centered on the COSMOS field using the Goddard IRAM Superconducting Millimeter Observer (GISMO) at the IRAM 30 m telescope. These data constitute the widest deep 2 mm survey to date, reaching a uniform σ ∼ 0.23 mJy beam−1 sensitivity over ∼250 arcmin2 at ∼24″ resolution. We detect four sources at high significance (S/N ≥ 4.4) with an expected number of false detections of 0.09 sources and five sources at 4.4 > S/N ≥ 3.7 with an expected number of false detections of 1.65 sources. Combined with deep GISMO observations in GOODS-N, we constrain the 2 mm number counts over one decade in flux density. These measurements agree with most galaxy evolution models tested here, except those with a large population of dusty star-forming galaxies at z > 7. Five GISMO sources have counterparts in (sub)millimeter catalogs available in COSMOS. Their redshifts suggest that all but one lie above z ∼ 3. These four high-redshift (z > 3) galaxies have \tilde{z} = 3.9, SFRs ∼ 400─1200 M yr−1, and M dust ∼ 109.5 M . They provide a relatively complete selection (∼66%) of the most luminous (L IR > 1012.6 L ) and highest- redshift (z > 3) galaxies detected within our survey area by AzTEC at 1.1 mm. We thus conclude that 2 mm surveys favor the selection of massive, vigorously star-forming, high-redshift galaxies. This is corroborated by GISMO-C4, a source with a low false-detection probability (∼6.2%), for which the absence of a (sub)millimeter counterpart supports a high-redshift origin (z ≳ 3). Based on observations with the IRAM 30 m telescope.

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 日付: 2019
 出版の状態: 出版
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出版物 1

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出版物名: The Astrophysical Journal
種別: 学術雑誌
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出版社, 出版地: -
ページ: - 巻号: 877 通巻号: - 開始・終了ページ: - 識別子(ISBN, ISSN, DOIなど): -