Please use this identifier to cite or link to this item: http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/948
A broadband spectroscopic search for CO line emission in HDF850.1: the brightest submillimetre object in the hubble deep field north
David Hughes
ITZIAR ARETXAGA MENDEZ
ENRIQUE GAZTAÑAGA BALBAS
Acceso Abierto
Atribución-NoComercial-SinDerivadas
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 ∼< z∼ < 5.4. Despite the wealth of existing multi-wavelength observations, and the recent identification of a galaxy counterpart in deep K′ band (2.2 μm) imaging, an unambiguous spectroscopic redshift has not yet been obtained for this object. A far-infrared-to-radio wavelength photometric redshift technique however, predicts a ∼90% probability that the redshift is in the range, 3.3∼ < z∼ < 5.4 (equivalent to an observed redshifted CO J=1-0 emission line frequency, 26.5 >∼ ʋobs >∼ 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.
Monthly notices of the royal astronomical society
2007
Artículo
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Wagg, J., et al., (2007). A broadband spectroscopic search for CO line emission in HDF850.1: the brightest submillimetre object in the hubble deep field north, Monthly notices of the royal astronomical society, Vol.375(2):1-9
ASTRONOMÍA Y ASTROFÍSICA
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Appears in Collections:Artículos de Astrofísica

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