CO and 850um obs. of Planck Galactic cold clumps Virtual Observatory Resource

Authors
  1. Zhang C.-P.
  2. Liu T.
  3. Yuan J.
  4. Sanhueza P.
  5. Traficante A.
  6. Li G.-X.
  7. Li D.,Tatematsu K.
  8. Wang Ke
  9. Lee C.W.
  10. Samal M.R.
  11. Eden D.
  12. Marston A.
  13. Liu X.-L.,Zhou J.-J.
  14. Li P.S.
  15. Koch P.M.
  16. Xu J.-L.
  17. Wu Y.
  18. Juvela M.
  19. Zhang T.,Alina D.
  20. Goldsmith P.F.
  21. Toth L.V.
  22. Wang J.-J.
  23. Kim K.-T.
  24. Published by
    CDS
Abstract

In order to understand the initial conditions and early evolution of star formation in a wide range of Galactic environments, we carried out an investigation of 64 Planck Galactic cold clumps (PGCCs) in the second quadrant of the Milky Way. Using the ^13^CO and C^18^O J=1-0 lines and 850{mu}m continuum observations, we investigated cloud fragmentation and evolution associated with star formation. We extracted 468 clumps and 117 cores from the ^13^CO line and 850{mu}m continuum maps, respectively. We made use of the Bayesian distance calculator and derived the distances of all 64 PGCCs. We found that in general, the mass-size plane follows a relation of m~r^1.67^. At a given scale, the masses of our objects are around 1/10 of that of typical Galactic massive star-forming regions. Analysis of the clump and core masses, virial parameters, densities, and mass-size relation suggests that the PGCCs in our sample have a low core formation efficiency (~3.0%), and most PGCCs are likely low-mass star-forming candidates. Statistical study indicates that the 850{mu}m cores are more turbulent, more optically thick, and denser than the ^13^CO clumps for star formation candidates, suggesting that the 850{mu}m cores are likely more appropriate future star formation candidates than the ^13^CO clumps.

Keywords
  1. milky-way-galaxy
  2. interstellar-medium
  3. co-line-emission
  4. millimeter-astronomy
  5. submillimeter-astronomy
  6. infrared-sources
Bibliographic source Bibcode
2018ApJS..236...49Z
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/236/49
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/236/49
Document Object Identifer DOI
doi:10.26093/cds/vizier.22360049

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/236/49
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/236/49
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/236/49
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/236/49/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/236/49/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/236/49/table1?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/236/49/clumps?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/236/49/clumps?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/236/49/clumps?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/236/49/cores?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/236/49/cores?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/236/49/cores?

History

2018-10-12T10:06:15Z
Resource record created
2018-10-12T10:06:15Z
Created
2018-11-30T08:05:29Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr