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A broadband spectroscopic search for CO line emission in HDF850.1: the brightest submillimetre object in the Hubble Deep Field North

J. Wagg·D. H. Hughes·I. Aretxaga·E. L. Chapin·J. S. Dunlop·E. Gaztanaga·M. Devlin
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Abstract

Using the 100-m Green Bank Telescope, we have conducted a cm-wavelength search for CO J=1-0 line emission towards the high-redshift, far-infrared luminous object, HDF850.1 over the redshift interval 3.3 nu(obs)>18.0 GHz), making HDF850.1 a potential occupent of the `high-redshift tail' of submm selected galaxies. We have also conducted a search for CO J=2-1 line emission over the narrower redshift range, 3.9<z<4.3. although we do not detect any CO line emission in this object, our limits to the CO line luminosity are in broad agreement with the median value measured in the current sample of high-redshift, submm selected objects detected in high-J CO line emission, but not sufficient to fully test the validity of the photometric redshift technique.

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J. Wagg, D. H. Hughes, I. Aretxaga, E. L. Chapin, J. S. Dunlop, E. Gaztanaga, M. Devlin. 2006-11-29. A broadband spectroscopic search for CO line emission in HDF850.1: the brightest submillimetre object in the Hubble Deep Field North. https://doi.org/10.1111/j.1365-2966.2006.11352.x

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