J/A+AS/70/95         Warm IRAS sources. I. AGN candidates (de Grijp+ 1987)
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Warm IRAS sources. I. 
A catalogue of AGN candidates from the point source catalog.
      de Grijp M.H.K., Miley G.K., Lub J.
     <Astron. Astrophys. Suppl. Ser. 70, 95 (1987)>
     =1987A&AS...70...95D
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ADC_Keywords: Infrared sources ; Active gal. nuclei

Keywords: catalogue - Seyferts - infrared radiation


Abstract:
    We have previously shown that a blue (warm) 60 to 25µm infrared
    colour provides a powerful parameter for discriminating between AGNs
    and normal galaxies and that the far-IR spectrum is therefore an
    efficient tool for finding new AGNs (de Grijp et al.,
    1985Natur.314..140D) Here we present a list of such AGN candidates
    based on warm IR sources from the IRAS Point Source Catalogue (PSC,
    Cat. II/125). Identification data and finding charts are also given.
    In addition the list of warm IRAS sources is supplemented by a
    compendium of data from the IRAS PSC on detected sources identified
    with previously known AGNs whose infrared spectra do not bring them
    within our colour selection criterion

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat       110      565  *IRAS candidate Active Galactic Nuclei
table2.dat       110      177   Active galaxies compiled by Veron-Cetty & Veron
                               (1985, See Cat. VII/188), that were not
                               included in table I.
table3.dat       110        9   Extragalactic radio sources (Kuhr,
                               1981A&AS...45..367K) not present in tables I & II


Note to table1: Sources were selected on position (high galactic latitude,
    not in Magellanic and colour (25 to  60 µm spectral index between 
    1.5 and 0.0).  All sources satisfying these criteria are included, even 
    when optical identification indicates them to be non-extragalactic objects.

See also:
           II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)
    J/A+AS/108/61 : Warm IRAS source. IV. (Fehmers+, 1994)
          VII/188 : Quasars and Active Galactic Nuclei (7th Ed.) (Veron+ 1996)
          VII/99  : Radial Velocities of Galaxies (Palumbo+ 1986)


Byte-by-byte Description of file:  table1.dat  table2.dat  table3.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---     [DML87]   Sequential number
       4  A1    ---    m_[DML87]  [nsew] Multiplicity index on Seq
   6-  7  I2    h       RAh       IRAS right ascension (1950)
   9- 10  I2    min     RAm       IRAS right ascension (1950)
  12- 15  F4.1  s       RAs       [0/60] IRAS right ascension (1950)
      17  A1    ---     DE-       IRAS declination sign
  18- 19  I2    deg     DEd       IRAS declination (1950)
  21- 22  I2    arcmin  DEm       IRAS declination (1950)
  24- 25  I2    arcsec  DEs       [0/60] IRAS declination (1950)
      27  A1    ---    l_alpha25  Limit flag on alpha25
  28- 32  F5.2  ---     alpha25   ? 25 to 60 µm spectral index
      33  A1    ---    u_alpha25  Uncertainty flag on alpha25
      34  A1    ---     l_S60um   Limit flag on S60um
  35- 41  F7.2  Jy      S60um     Flux density at 60µm
      42  A1    ---     u_S60um   Uncertainty flag on 60um
      45  A1    ---    l_alpha60  Limit flag on alpha60
  46- 50  F5.2  ---     alpha60   ? 60 to 100 µm spectral index
      51  A1    ---    u_alpha60  Uncertainty flag on alpha60
  53- 55  A3    ---     Class     Classification (1)
  57- 62  F6.4  ---     z         ? Redshift (2)
  64- 65  I2    ---     AssCat    ? Association Catalogue number (3)
  67- 79  A13   ---    AssSource  Association source name (3)
  81-110  A30   ---     Com       Comments

Note (1): BL: BL Lac object
          S1: Seyfert 1 (including QSO)
          S2: Seyfert 2
          S3: LINER
          H2: galaxy with nucleus HII-region
          PN: planetary nebula
          RN: reflection nebula
          DN: galactic dark cloud
          ST: star
          LH: local H2 region in the galaxy
         GAL: galaxy
          EF: empty field
         M31: M31 type
Note (2): Redshifts from Veron & Veron (1985, See Cat. VII/188),
           Palumbo et al. (1983, See Cat. VII/99),
           de Grijp et al. (1986, A&A, in prep.)
Note (3): Matches with published catalogues using the same catalogue numbering
           convention as given by the IRAS Catalogue (See II/125).
           The non-standard "ZG" acronym stands for Zwicky's catalog
           of galaxies (see e.g. cat. VII/190)


Table 4: Objects types identified.
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  Object type          number  percentage
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  stars                  77      13.7%
  planetary nebulae      15       2.7%
  galactic darks clouds   6       1.1%
  HII regions             5       0.7%
  galaxies              443      78.7%
  doubtful types         17       3.0%

History:
  * 13-May-1997: Prepared via OCR at CDS.
  * 01-Sep-1997: a list of about 80 errors detected by H. Andernach
     have been corrected in the tables. 
    Missing acronyms in column AssSource were also added at CDS.

References:
    de Grijp et al., Paper II       =1992A&AS...96..389D
    Keel et al., Paper III          =1994A&A...283..791K
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(End)                         James Marcout, Patricia Bauer [CDS]    13-May-1997