J/A+AS/133/201      Spectral class. of unidentified IRAS sources (Iyengar+ 1998)
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Spectral classification of unidentified IRAS point sources with
F{nu}(12µm) >= F{nu}(25µm).
       Iyengar K.V.K., MacConnell D.J.
      <Astron. Astrophys. Suppl. Ser. 133, 201 (1998)>
      =1998A&AS..133..201I      (SIMBAD/NED BibCode)
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ADC_Keywords: Infrared sources ; Spectral types

Mission_Name: IRAS

Keywords: stars: AGB - stars carbon - infrared: stars - stars: late-type -
          stars: mass-loss

Description:
    M spectral types and IRAS infrared magnitudes, colors, and variability
    parameters are given for 155 largely unidentified IRAS point sources
    having quality-3 flux densities at 12, 25, and 60 mum.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table6.dat        69      155   Spectral type of IRAS unidentified sources which
                                 have quality-3 flux density data at 12, 25,
                                 and 60 µm
table6.tex        80      308   LaTeX version of table6
table6.ps         72      661   PostScript version of table6


See also:
        II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)
        II/177 : Near IR Photometry of a Sample of IRAS Point Sources
                                                              (Fouque+ 1992)
       III/197 : IRAS Low Resolution Spectra (IRAS team, 1987)
 J/A+AS/90/327 : 1612MHz OH survey of IRAS point sources
                                                  (te Lintel Hekkert+ 1991)
 J/A+A/299/453 : OH/IR stars photometry (Lepine+, 1995)
  J/A+AS/99/31 : Identification of C stars in IRAS (Guglielmo+ 1993)
 J/ApJ/411/188 : Classification of bright IRAS variables (Allen+ 1993)


Byte-by-byte Description of file:  table6.dat

   Bytes Format Units   Label         Explanations

   1- 10  A10   ---     IRAS          IRAS Point Source (Cat. II/125) name
  11- 18  A8    ---     Footnote      Optional footnote to entry  (1)
  20- 24  F5.1  deg     GLON          Galactic longitude
  25- 29  F5.1  deg     GLAT          Galactic latitude
  31- 33  A3    ---     SpType        Spectral type by DJM (2)
  35- 39  F5.2  mag     [12]          IRAS magnitude at 12 mum
  41- 45  F5.2  mag     [25]          IRAS magnitude at 25 mum
  47- 51  F5.2  mag     [60]          IRAS magnitude at 60 mum
  53- 57  F5.2  mag    ([12]-[25])VH  IRAS color (3)
  59- 63  F5.2  mag    ([25]-[60])VH  IRAS color (3)
  65- 66  I2    ---     Var           IRAS variability flag
  68- 69  I2    ---     LRS           ? IRAS Low-Resol. Spectrometer flag

Note (1): References:
          a: Allen et al., 1993, Cat. J/ApJ/411/188
          b: Fouque et al., 1992, Cat. II/177
          c: Guglielmo et al., 1993, Cat. J/A+AS/99/31
          d: Haikala et al., 1994A&AS..103..107H
          e: Hashimoto, 1994, Cat. J/A+AS/107/445
          f: Jiang et al., 1996, Cat. J/ApJS/106/463
          g: Lepine et al., 1995, Cat. J/A+A/299/453
          h: Lewis et al., 1990ApJ...362..634L
          i: Olnon et al., 1986A&AS...65..607O
          j: Sivagnanam et al., 1990A&A...233..112S
          k: te Lintel Hekkert et al., 1991, Cat. J/A+AS/90/327
          l: Volk et al., 1991ApJS...77..607V
          m: Kwok et al., 1997ApJS..112..557K
Note (2): Classification of MacConnell, 1992AJ....104..821M

Note (3): Colours as defined by van der Veen and Habing (1988A&A...194..125V):
           [12]-[25]=2.5[log(Fnu(25)/Fnu(12))]
           [25]-[60]=2.5[log(Fnu(60)/Fnu(25))]


Acknowledgements: Jack MacConnell 

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(End)                                        Patricia Bauer  [CDS]   28-Oct-1998