A search for neutral carbon towards two z = 4.05 submillimetre galaxies, GN 20 and GN 20.2

C. M. Casey; S. C. Chapman; E. Daddi; H. Dannerbauer; A. Pope; D. Scott; F. Bertoldi; R. J. Beswick; A. W. Blain; P. Cox; R. Genzel; T. R. Greve; R. J. Ivison; T. W B Muxlow; R. Neri; A. Omont; I. Smail; L. J. Tacconi

doi:10.1111/j.1365-2966.2009.15517.x

A search for neutral carbon towards two z = 4.05 submillimetre galaxies, GN 20 and GN 20.2

C. M. Casey
, S. C. Chapman
, E. Daddi
, H. Dannerbauer
, A. Pope
, D. Scott
, F. Bertoldi
, R. J. Beswick
, A. W. Blain
, P. Cox
, R. Genzel
, T. R. Greve
, R. J. Ivison
, T. W B Muxlow
, R. Neri
, A. Omont
, I. Smail
, L. J. Tacconi

Research output: Contribution to journal › Article › peer-review

Abstract

Using the IRAM Plateau de Bure Interferometer (PdBI) we have searched for the upper fine structure line of neutral carbon [] and 12CO(J = 7 → 6) (νrest = 806 GHz) towards the submillimetre galaxies (SMGs) GN 20 (SMM J123711.9+622212, z = 4.055) and GN 20.2 (SMM J123708.8+622202, z = 4.051). The far-infrared continuum is detected at 8σ significance in GN 20, with a flux density of S1.8 mm = 1.9 ± 0.2 mJy, while no continuum is detected in GN 20.2. Both sources are statistically undetected in both and 12CO(J = 7 → 6) lines; we derive line luminosity limits for both C i and CO of L′ ≲ 2 × 1010 K km s-1 pc2. Assuming carbon excitation temperatures of Tex = 30 K (the galaxies' measured dust temperatures), we infer C i mass limits of MC i <5.4 × 106 M⊙ (GN 20) and MC i <6.8 × 106 M⊙ (GN 20.2). The derived C i abundance limits are

Original language	English
Pages (from-to)	670-676
Number of pages	6
Journal	Monthly Notices of the Royal Astronomical Society
Volume	400
Issue number	2
DOIs	https://doi.org/10.1111/j.1365-2966.2009.15517.x
Publication status	Published - Dec 2009

Keywords

Galaxies: evolution
Galaxies: high-redshift
Galaxies: individual: GN 20
Galaxies: individual: GN 20.2
Galaxies: starburst

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10.1111/j.1365-2966.2009.15517.x

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Casey, C. M., Chapman, S. C., Daddi, E., Dannerbauer, H., Pope, A., Scott, D., Bertoldi, F., Beswick, R. J., Blain, A. W., Cox, P., Genzel, R., Greve, T. R., Ivison, R. J., Muxlow, T. W. B., Neri, R., Omont, A., Smail, I., & Tacconi, L. J. (2009). A search for neutral carbon towards two z = 4.05 submillimetre galaxies, GN 20 and GN 20.2. Monthly Notices of the Royal Astronomical Society, 400(2), 670-676. https://doi.org/10.1111/j.1365-2966.2009.15517.x

@article{bab345f1f6d14bc3a49f65af405c5ead,

title = "A search for neutral carbon towards two z = 4.05 submillimetre galaxies, GN 20 and GN 20.2",

abstract = "Using the IRAM Plateau de Bure Interferometer (PdBI) we have searched for the upper fine structure line of neutral carbon [] and 12CO(J = 7 → 6) (νrest = 806 GHz) towards the submillimetre galaxies (SMGs) GN 20 (SMM J123711.9+622212, z = 4.055) and GN 20.2 (SMM J123708.8+622202, z = 4.051). The far-infrared continuum is detected at 8σ significance in GN 20, with a flux density of S1.8 mm = 1.9 ± 0.2 mJy, while no continuum is detected in GN 20.2. Both sources are statistically undetected in both and 12CO(J = 7 → 6) lines; we derive line luminosity limits for both C i and CO of L′ ≲ 2 {\texttimes} 1010 K km s-1 pc2. Assuming carbon excitation temperatures of Tex = 30 K (the galaxies' measured dust temperatures), we infer C i mass limits of MC i <5.4 {\texttimes} 106 M⊙ (GN 20) and MC i <6.8 {\texttimes} 106 M⊙ (GN 20.2). The derived C i abundance limits are",

keywords = "Galaxies: evolution, Galaxies: high-redshift, Galaxies: individual: GN 20, Galaxies: individual: GN 20.2, Galaxies: starburst",

author = "Casey, \{C. M.\} and Chapman, \{S. C.\} and E. Daddi and H. Dannerbauer and A. Pope and D. Scott and F. Bertoldi and Beswick, \{R. J.\} and Blain, \{A. W.\} and P. Cox and R. Genzel and Greve, \{T. R.\} and Ivison, \{R. J.\} and Muxlow, \{T. W B\} and R. Neri and A. Omont and I. Smail and Tacconi, \{L. J.\}",

year = "2009",

month = dec,

doi = "10.1111/j.1365-2966.2009.15517.x",

language = "English",

volume = "400",

pages = "670--676",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "1365-2966",

publisher = "Oxford University Press",

number = "2",

}

Casey, CM, Chapman, SC, Daddi, E, Dannerbauer, H, Pope, A, Scott, D, Bertoldi, F, Beswick, RJ, Blain, AW, Cox, P, Genzel, R, Greve, TR, Ivison, RJ, Muxlow, TWB, Neri, R, Omont, A, Smail, I & Tacconi, LJ 2009, 'A search for neutral carbon towards two z = 4.05 submillimetre galaxies, GN 20 and GN 20.2', Monthly Notices of the Royal Astronomical Society, vol. 400, no. 2, pp. 670-676. https://doi.org/10.1111/j.1365-2966.2009.15517.x

TY - JOUR

T1 - A search for neutral carbon towards two z = 4.05 submillimetre galaxies, GN 20 and GN 20.2

AU - Casey, C. M.

AU - Chapman, S. C.

AU - Daddi, E.

AU - Dannerbauer, H.

AU - Pope, A.

AU - Scott, D.

AU - Bertoldi, F.

AU - Beswick, R. J.

AU - Blain, A. W.

AU - Cox, P.

AU - Genzel, R.

AU - Greve, T. R.

AU - Ivison, R. J.

AU - Muxlow, T. W B

AU - Neri, R.

AU - Omont, A.

AU - Smail, I.

AU - Tacconi, L. J.

PY - 2009/12

Y1 - 2009/12

N2 - Using the IRAM Plateau de Bure Interferometer (PdBI) we have searched for the upper fine structure line of neutral carbon [] and 12CO(J = 7 → 6) (νrest = 806 GHz) towards the submillimetre galaxies (SMGs) GN 20 (SMM J123711.9+622212, z = 4.055) and GN 20.2 (SMM J123708.8+622202, z = 4.051). The far-infrared continuum is detected at 8σ significance in GN 20, with a flux density of S1.8 mm = 1.9 ± 0.2 mJy, while no continuum is detected in GN 20.2. Both sources are statistically undetected in both and 12CO(J = 7 → 6) lines; we derive line luminosity limits for both C i and CO of L′ ≲ 2 × 1010 K km s-1 pc2. Assuming carbon excitation temperatures of Tex = 30 K (the galaxies' measured dust temperatures), we infer C i mass limits of MC i <5.4 × 106 M⊙ (GN 20) and MC i <6.8 × 106 M⊙ (GN 20.2). The derived C i abundance limits are

AB - Using the IRAM Plateau de Bure Interferometer (PdBI) we have searched for the upper fine structure line of neutral carbon [] and 12CO(J = 7 → 6) (νrest = 806 GHz) towards the submillimetre galaxies (SMGs) GN 20 (SMM J123711.9+622212, z = 4.055) and GN 20.2 (SMM J123708.8+622202, z = 4.051). The far-infrared continuum is detected at 8σ significance in GN 20, with a flux density of S1.8 mm = 1.9 ± 0.2 mJy, while no continuum is detected in GN 20.2. Both sources are statistically undetected in both and 12CO(J = 7 → 6) lines; we derive line luminosity limits for both C i and CO of L′ ≲ 2 × 1010 K km s-1 pc2. Assuming carbon excitation temperatures of Tex = 30 K (the galaxies' measured dust temperatures), we infer C i mass limits of MC i <5.4 × 106 M⊙ (GN 20) and MC i <6.8 × 106 M⊙ (GN 20.2). The derived C i abundance limits are

KW - Galaxies: evolution

KW - Galaxies: high-redshift

KW - Galaxies: individual: GN 20

KW - Galaxies: individual: GN 20.2

KW - Galaxies: starburst

U2 - 10.1111/j.1365-2966.2009.15517.x

DO - 10.1111/j.1365-2966.2009.15517.x

M3 - Article

SN - 1365-2966

VL - 400

SP - 670

EP - 676

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

A search for neutral carbon towards two z = 4.05 submillimetre galaxies, GN 20 and GN 20.2

Abstract

Keywords

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