PLCKERC -070 G084.93-03.49 , the SIMBAD biblio

2016MNRAS.458.3619C - Mon. Not. R. Astron. Soc., 458, 3619-3632 (2016/June-1)

The bandmerged Planck Early Release Compact Source Catalogue: probing sub-structure in the molecular gas at high Galactic latitude.


Abstract (from CDS):

The Planck Early Release Compact Source Catalogue (ERCSC) includes nine lists of highly reliable sources, individually extracted at each of the nine Planck frequency channels. To facilitate the study of the Planck sources, especially their spectral behaviour across the radio/infrared frequencies, we provide a 'bandmerged' catalogue of the ERCSC sources. This catalogue consists of 15 191 entries, with 79 sources detected in all nine frequency channels of Planck and 6818 sources detected in only one channel. We describe the bandmerging algorithm, including the various steps used to disentangle sources in confused regions. The multifrequency matching allows us to develop spectral energy distributions of sources between 30 and 857 GHz, in particular across the 100 GHz band, where the energetically important CO J=1-0 line enters the Planck bandpass. We find ∼3σ-5σ evidence for contribution to the 100 GHz intensity from foreground CO along the line of sight to 147 sources with {30^○} ]]>. The median excess contribution is 4.5±0.9 per cent of their measured 100 GHz flux density which cannot be explained by calibration or beam uncertainties. This translates to 0.5±0.1 K km/s of CO which must be clumped on the scale of the Planck 100 GHz beam, i.e. ∼10 arcmin. If this is due to a population of low-mass (∼15 M) molecular gas clumps, the total mass in these clumps may be more than 2000 M. Further, high-spatial-resolution, ground-based observations of the high-latitude sky will help shed light on the origin of this diffuse, clumpy CO emission.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): radiation mechanisms: general - catalogues - surveys - radio continuum: galaxies

VizieR on-line data: <Available at CDS (J/MNRAS/458/3619): table4.dat>

CDS comments: Some objects PLCKERC quoted in the text are not in Simbad (not enough information).

Simbad objects: 261

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