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J/ApJ/653/1325   Galactic distribution of infrared dark clouds    (Simon+, 2006)
The characterization and galactic distribution of infrared dark clouds.
    Simon R., Rathborne J.M., Shah R.Y., Jackson J.M., Chambers E.T.
   <Astrophys. J., 653, 1325-1335 (2006)>
   =2006ApJ...653.1325S
ADC_Keywords: Molecular clouds ; Interstellar medium ; Infrared sources

Keywords: dust, extinction - Galaxy: structure - infrared: ISM -
          radio lines: ISM - stars: formation

Abstract:
    Using 13CO(J=1-0) molecular line emission (112GHz) from the Boston
    University-Five College Radio Astronomy Observatory Galactic Ring
    Survey (BU-FCRAO GRS), we have established kinematic distances to
    313 infrared dark clouds (IRDCs) by matching the morphology of the
    molecular line emission in distinct velocity channels to their
    mid-infrared extinction.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        70      287   Properties of the IRDCs
table2.dat        70       26   Properties of the clouds with distinct
                              velocity components along the line of sight


See also:
    J/ApJ/639/227 : MSX IRDC candidate catalog (Simon+, 2006)
    J/ApJ/641/389 : Properties of IRDC cores (Rathborne+, 2006)


Byte-by-byte Description of file: table[12].dat

   Bytes Format Units     Label     Explanations

   1- 13  A13   ---       MSXDC     MSXDC designation (GLLL.ll+BB.bb)
      15  A1    ---       m_MSXDC   [abcdef] Cloud component (in table2 only)
  17- 21  F5.2  deg       GLON      Galactic longitude
  23- 27  F5.2  deg       GLAT      Galactic latitude
  29- 33  F5.1  km/s      Vlsr      Local Standard of Rest (LSR) velocity
  35- 38  F4.1  km/s      DV        Line width
  40- 42  F3.1  kpc       Dist      Kinematic distance
  44- 47  F4.1  pc        Size      Size for each of the IRDCs that have a
                                     morphological match to the 13CO emission
  49- 53  F5.1  K.km/s    Sint      Integrated intensity of 13CO
  55- 58  F4.1  10+21cm-2 N(H2)     H2 column density
  60- 64  I5    solMass   MLTE      LTE mass
  66- 70  I5    cm-3      n(H2)     Average H2 density


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    01-Aug-2008