J/A+AS/124/85       OH emission from IRAS sources        (Slysh+ 1997)
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Further search for OH emission from IRAS sources.
       Slysh V.I., Dzura A.M., Val'tts I.E., Gerard E.
      <Astron. Astrophys. Suppl. Ser. 124, 85 (1997)>
      =1997A&AS..124...85S      (SIMBAD/NED BibCode)
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ADC_Keywords: Infrared sources ; Masers ; Radio lines

Mission_Name: IRAS

Keywords: ISM: clouds - ISM: molecules - masers - radio lines: ISM - surveys


Abstract:
    Results of a continued search for OH main line emission from IRAS
    sources are reported. Towards a sample of 182 sources which consists
    of IRAS sources selected by the colour criterion for ultracompact HII
    region, and several IRAS cores, H2O masers and bipolar outflows, we
    detected 19 new OH masers of Class I and 5 OH/IR candidates. The
    correlation between IR and OH maser flux is confirmed. Also 51 thermal
    and 4 absorption sources were detected. The low radial velocities and
    derived OH column densities suggest that the thermal OH emission comes
    from nearby dark clouds. There is evidence that IRAS sources towards
    which thermal emission was detected are connected with these dark
    clouds.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1           103       77   Masers
table2            78       59   Thermal sources
tables.tex       174      444   LaTeX version of the tables


See also:
    II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)


Byte-by-byte Description of file:  table1

   Bytes Format Units   Label         Explanations

   1- 10  A10   ---     Name          IRAS or other names
      11  A1    ---     n_Name        [ab] Note (1)
  13- 17  F5.1  deg     GLON          Galactic longitude
  18- 22  F5.1  deg     GLAT          Galactic latitude
  24- 29  F6.2  km/s    V(1667MHz)    ? Velocity (Gaussian fit for 1667MHz line)
  31- 34  F4.2  km/s    e_V(1667MHz)  ? rms uncertainty on V(1667MHz)
  36- 39  F4.2  km/s   FWHM(1667MHz)  ? FWHM (Gaussian fit for 1667MHz line)
  41- 44  F4.2  km/s e_FWHM(1667MHz)  ? rms uncertainty on FWHM(1667MHz)
      46  A1    ---     l_S1667MHz    Limit flag on S1667MHz
  47- 51  F5.2  Jy      S1667MHz      ? Flux (Gaussian fit for 1667MHz line)
  53- 56  F4.2  Jy      e_S1667MHz    ? rms uncertainty on S1667MHz
      57  A1    ---     Pol           [RLHVT] Polarization type (2)
  59- 64  F6.2  km/s    V(1665MHz)    ? Velocity (Gaussian fit for 1665MHz line)
  66- 69  F4.2  km/s    e_V(1665MHz)  ? rms uncertainty on V(1665MHz)
  71- 75  F5.2  km/s   FWHM(1665MHz)  ? FWHM (Gaussian fit for 1665MHz line)
  77- 80  F4.2  km/s e_FWHM(1665MHz)  ? rms uncertainty on FWHM(1665MHz)
      82  A1    ---     l_S1665MHz    Limit flag on S1665MHz
  83- 86  F4.2  Jy      S1665MHz      ? Flux (Gaussian fit for 1665MHz line)
  88- 91  F4.2  Jy      e_S1665MHz    ? rms uncertainty on S1665MHz
      92  A1    ---     Pol2          [RLHVT] Polarization type (2)
      93  A1    ---     Note          [c] c: 1665Mhz parameters are 1612MHz OH
                                              line ones (For 17269-2235 only)
  95-103  A9    ---     OtherName     Other name

Note (1): a: 1665 V profile centered at -21km/s and 1665 H profile at -27km/s
              were not observed with high velocity resolution.
          b: Detection reported in the Paper I.
Note (2): R: right circular polarization
          L: left circular polarization
          H: horizontal linear polarization
          V: vertical linear polarization
          T: line supposed to be thermal


Byte-by-byte Description of file:  table2

   Bytes Format  Units    Label     Explanations

   1- 10  A10    ---      Name      IRAS or other names
  12- 19  A8     ---      Lynds     Associations of an IRAS source with
                                     nebulae of Lynds
  21- 25  F5.1   deg      GLON      Galactic longitude
  26- 30  F5.1   deg      GLAT      Galactic latitude
      32  A1     ---    l_S1667MHz  Limit flag on S1667MHz
  33- 37  F5.2   Jy       S1667MHz  Flux at 1667MHz (result of Gaussian fits)
      39  A1     ---    l_S1665MHz  Limit flag on S1667MHz
  40- 44  F5.2   Jy       S1665MHz  ? Flux at 1665MHz (result of Gaussian fits)
  46- 50  F5.1   km/s     RV        Radial velocity (result of Gaussian fits)
  52- 54  F3.1   km/s     FWHM      FWHM (result of Gaussian fits)
  56- 60  F5.2  10+14cm-2 N(OH)     ? Estimates of OH column density.
  62- 67  F6.2   km/s     V(CO)     ? CO radial velocities
      70  I1     ---      r_V(CO)   ? Reference for radial velocity (1)
  72- 78  A7     ---     IRAScloud  Name of a associated IRAS cloud or core
                                     (Wood et al. 1994, Cat. J/ApJS/95/457)

Note (1): 1: Myers et al.  (1983ApJ...264..517)
          2: Terebey et al. (1989ApJ...340..472T)
          3: Casoli et al. (1986A&A...169..281C)
          4: Heyer et al. (1987ApJ...321..370H)
          5: Wouterloot and Brand (1989, Cat. J/A+AS/80/149)
          6: de Geus et al. (1990A&A...231..137D)
          7: Benson et al. (1989)


Acknowledgements: Eric Gerard 

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(End)                                         Patricia Bauer [CDS]   12-Nov-1996