ACDS V10.0 - Detailed Description of II/298

ACDS V10.0 - Sun Jan 19 04:57:20 CET 2025

| # Detailed Description of II/298 : AKARI/FIS All-Sky Survey Point Source Catalogues (ISAS/JAXA, 2010) |

Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.

    II/298   AKARI/FIS All-Sky Survey Point Source Catalogues  (ISAS/JAXA, 2010)
    ================================================================================
    AKARI/FIS All-Sky Survey Bright Source Catalogue Version 1.0
        Yamamura I., Makiuti S., Ikeda N., Fukuda Y., Oyabu S., Koga T., White G.J.
        <ISAS/JAXA (2010)>
        =2010yCat.2298....0Y
    ================================================================================
    ADC_Keywords: Infrared sources ; Surveys ; Photometry, infrared

    Mission_Name: AKARI

    Description:
        The AKARI Infrared Astronomical Satellite observed the whole sky in
        the far infrared (50-180µm) and the mid-infrared (9 and 18µm)
        between May 2006 and August 2007 (Murakami et al. 2007PASJ...59S.369M)

        The AKARI/FIS All-Sky Survey Bright Source Catalog Version 1.0
        provides positions and fluxes for 427071 point sources in the 4
        far-infrared wavelengths centered at 65, 90, 140 and 160µm (see
        filter characteristics in the "Note (1)" section below)

    Recommendation:
        The users of the catalogue are requested to read the documents
        carefully before critical discussions of the data. Any questions and
        comments are appreciated at ISAS Helpdesk (iris_help@ir.isas.jaxa.jp)

    Acknowledging AKARI data in publications:
        Please acknowledge the usage of the AKARI data (details at
        http://www.ir.isas.jaxa.jp/AKARI/Publications/guideline.html).

    File Summary:

           FileName      Lrecl  Records   Explanations

    ×                   80        .   This file
    × ReadMe            80        .   This file
    × fis.dat          231   427071   AKARI/FIS All-Sky Survey Bright Source Catalogue
                                      (Version 1.0)

    See also:
        II/297 : AKARI/IRC All-Sky Survey Point Source Catalogue (ISAS/JAXA, 2010)
        http://www.ir.isas.jaxa.jp/AKARI/Observation/PSC/Public/ : AKARI home page
        http://darts.isas.jaxa.jp/astro/akari/cas.html : AKARI Archive Server

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

       Bytes Format Units   Label    Explanations

           1  A1    ---     ---      [0]
       2- 10  I9    ---     objID    [3000001/3427071] Object ID
      12- 25  A14   ---     objName  AKARI source name (HHMMSSs+DDMMSS) (2)
      27- 35  F9.5  deg     RAdeg    Right Ascension (J2000)
      37- 45  F9.5  deg     DEdeg    Declination (J2000)
      47- 51  F5.2  arcsec  errMaj   [6.00] Major axis of position error ellipse
      53- 57  F5.2  arcsec  errMin   [6.00] Minor axis of position error ellipse
      59- 63  F5.1  deg     errPA    [0.0] position angle of error ellipse
      65- 74  E10.4 Jy      S65      ?=-999.9 Flux density in N60 (1)
      76- 85  E10.4 Jy      S90      ?=-999.9 Flux density in WIDE-S (1)
      87- 96  E10.4 Jy      S140     ?=-999.9 Flux density in WIDE-L (1)
      98-107  E10.4 Jy      S160     ?=-999.9 Flux density in N160 (1)
     109-117  E9.3  Jy      e_S65    ?=-99.9 uncertainty in N60
     119-127  E9.3  Jy      e_S90    ?=-99.9 uncertainty in WIDE-S
     129-137  E9.3  Jy      e_S140   ?=-99.9 uncertainty in WIDE-L
     139-147  E9.3  Jy      e_S160   ?=-99.9 uncertainty in N160
         149  I1    ---     q_S65    [0,3] quality flag for N60 (3)
         151  I1    ---     q_S90    [0,3] quality flag for WIDE-S (3)
         153  I1    ---     q_S140   [0,3] quality flag for WIDE-L (3)
         155  I1    ---     q_S160   [0,3] quality flag for N160 (3)
     157-159  A3    ---     ---      [0]
         160  A1    ---     f_S65    [0-9A-F] Bit flags for N60 (4)
     162-164  A3    ---     ---      [0]
         165  A1    ---     f_S90    [0-9A-F] Bit flags for WIDE-S (4)
     167-169  A3    ---     ---      [0]
         170  A1    ---     f_S140   [0-9A-F] Bit flags for WIDE-L (4)
     172-174  A3    ---     ---      [0]
         175  A1    ---     f_S160   [0-9A-F] Bit flags for N160 (4)
     177-180  I4    ---     Ns65     Number of scans with source detection in N60
     182-185  I4    ---     Ns90     Number of scans with source detection in WIDE-S
     187-190  I4    ---     Ns140    Number of scans with source detection in WIDE-L
     192-195  I4    ---     Ns160    Number of scans with source detection in N160
     197-200  I4    ---     Np65     Number of possible detections in N60
     202-205  I4    ---     Np90     Number of possible detections in WIDE-S
     207-210  I4    ---     Np140    Number of possible detections in WIDE-L
     212-215  I4    ---     Np160    Number of possible detections in N160
     217-218  I2    ---     M65      [0,1]?=-1 month confirmation flag in N60 (5)
     220-221  I2    ---     M90      [0,1]?=-1 month confirmation flag in WIDE-S (5)
     223-224  I2    ---     M140     [0,1]?=-1 month confirmation flag in WIDE-L (5)
     226-227  I2    ---     M160     [0,1]?=-1 month confirmation flag in N160 (5)
     229-231  I3    ---     Ndens    Number of sources within 5arcmin of source

    Note (1): the filter characteristics are:
         -----------------------------------------------------
             Filter:     N60    WIDE-S    WIDE-L     N160
         -----------------------------------------------------
         Center(um):     65       90       140       160
          Range(um):    50-80    60-110   110-180   140-180
           Pixel("):    26.8      26.8     44.2      44.2
         -----------------------------------------------------
    Note (2):
        The sources should be referred in the literatures by their full name
        (AKARI-FIS-V1) followed by the letter 'J' and the objName, e.g.
        AKARI-FIS-V1 J0123498-025805
    Note (3): Four-level flux quality indicator:
        3 = high quality (source confirmed and flux is reliable)
        2 = source is confirmed but the flux is not reliable (see the flags)
        1 = the source is not confirmed
        0 = not observed
    Note (4): Bit flags of data quality in hexadecimal:
          1 = CDS mode used (Correlated Double Sampling used to observe
              bright sky regions to avoid saturation, e.g. in the inner
              Galactic plane)
          2 = flux too low
          4 = (not used)
          8 = possibly a 'side-lobe' detection
          Combined values are represented by the sum, e.g. 9 = 8 + 1 =
          a possible side-lobe detection in CDS mode.
    Note (5): The value is 1 when the source is observed in scans separated by
         more than one month. This value is independent from hour confirmation
         and can be 1 even if the source is not confirmed (q_=1); similarly a
         value of 0 does not mean that the source is unreliable.

    History:
      * 21-Apr-2010: from the AKARI pages
        http://www.ir.isas.jaxa.jp/AKARI/Observation/PSC/Public/
    ================================================================================
    (End)                                   Francois Ochsenbein [CDS]    30-Apr-2010