The CO line SED and atomic carbon in IRAS F10214+4724

Abstract

Using the IRAM 30m telescope and the Plateau de Bure interferometer we have detected the \ctwo and the CO 3$-$2, 4$-$3, 6$-$5, 7$-$6 transitions as well as the dust continuum at 3 and 1.2 mm towards the distant luminous infrared galaxy IRAS F10214+4724 at $z=2.286$. The \ctwo line is detected for the first time towards this source and IRAS F10214+4724 now belongs to a sample of only 3 extragalactic sources at any redshift where both of the carbon fine structure lines have been detected. The source is spatially resolved by our \ctwo\ observation and we detect a velocity gradient along the east-west direction. The CI line ratio allows us to derive a carbon excitation temperature of 42${}_{-9}^{+12}$ K. The carbon excitation in conjunction with the CO ladder and the dust continuum constrain the gas density to $n(\hh)$ = $10^{3.6-4.0}$ cm${}^{-3}$ and the kinetic temperature to $T{}_{\mathrm{kin}}$ = 45--80 K, similar to the excitation conditions found in nearby starburst galaxies. The rest-frame 360 $\mu$m dust continuum morphology is more compact than the line emitting region, which supports previous findings that the far infrared luminosity arises from regions closer to the active galactic nucleus at the center of this system.

arXiv comment11 pages, 9 figures, accepted by A&A

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• ALMA reveals a chemically evolved submillimeter galaxy at z=4.76
• Prediction of the Cosmic Evolution of the CO-Luminosity Functions
• Dust, CO and [CI]: Cross-calibration of molecular gas mass tracers in metal-rich galaxies across cosmic time
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• CO(1-0) line imaging of massive star-forming disc galaxies at z=1.5-2.2
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• First CO(17-16) emission line detected in a z > 6 quasar
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• CO Emission in Infrared-Selected Active Galactic Nuclei
• Redshift Determination and CO Line Excitation Modeling for the Multiply-Lensed Galaxy HLSW-01
• Far-IR/Submillimeter Spectroscopic Cosmological Surveys: Predictions of Infrared Line Luminosity Functions for z<4 Galaxies
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• Measuring space-time variation of the fundamental constants with redshifted submillimetre transitions of neutral carbon
• Gas and dust in a z=2.8 obscured quasar
• The preferentially magnified active nucleus in IRAS F10214+4724 - III. VLBI observations of the radio core
• A search for HI and OH absorption in z > 3 CO emitters
• The molecular gas content of z > 6.5 Lyman-alpha emitters
• Infrared fine-structure lines at high redshift
• The preferentially magnified active nucleus in IRAS F10214+4724 - I. Lens model and spatially resolved radio emission
• A luminous molecular gas pair beyond redshift 7
• A possible relation between global CO excitation and massive molecular outflows in local ULIRGs
• The gravitationally lensed, luminous infrared galaxy IRAS F10214+4724 observed with XMM-Newton
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