ACDS V10.0 - Detailed Description of VIII/38

ACDS V10.0 - Mon Jan 20 09:02:54 CET 2025

| # Detailed Description of VIII/38 : The Parkes-MIT-NRAO 4.85GHz (PMN) Surveys (Griffith+ 1993-1996) |

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.

    VIII/38        The Parkes-MIT-NRAO 4.85GHz (PMN) Surveys   (Griffith+ 1993-1996)
    ================================================================================
    The Parkes-MIT-NRAO (PMN) Surveys:
    II. Source catalog for the Southern Survey
         Wright A.E., Griffith M.R., Burke B.F., Ekers R.D.
        <Astrophys. J. Suppl. Ser. 91, 111 (1994)>
        =1994ApJS...91..111W
    III. Source catalog for the Tropical Survey
         Griffith M.R., Wright A.E., Burke B.F., Ekers R.D.
        <Astrophys. J. Suppl. Ser. 90, 179 (1994)>
        =1994ApJS...90..179G
    VI. Source Catalog for the Equatorial Survey
         Griffith M.R., Wright A.E., Burke B.F., Ekers R.D.
        <Astrophys. J. Suppl. Ser. 97, 347 (1995)>
        =1995ApJS...97..347G
    VIII. Source catalog for the Zenith survey
         Wright A.E., Griffith M.R., Hunt A.J., Troup E., Burke B.F., Ekers R.D.
        <Astrophys. J. Suppl. Ser. 103, 145 (1996)>
        =1996ApJS..103..145W
    ================================================================================
    ADC_Keywords: Radio sources ; Surveys

    Keywords: radio continuum: general - surveys

    Description:
        The PMN surveys were made using the Parkes 64-m radio telescope at a
        frequency of 4850 MHz with the NRAO multibeam receiver mounted at the
        prime focus (for a full description of the observations see Griffith
        & Wright, 1993, Paper I). The surveys had a spatial resolution (full
        width half-maximum: FWHM) of approximately 4'.2 and were made during
        1990 June and November. The PMN surveys were divided into several
        zones. These zones are listed in the following table, together with
        approximate flux limits and survey areas.
        --------------------------------------------------------------
        Zone Name   DEC limits (degrees)  Flux limits   Area (sr) File
        --------------------------------------------------------------
        SOUTHERN     -87.5< dec <-37     20 to 50 mJy       2.50  pmns
        ZENITH       -37  < dec <-29           72 mJy       0.67  pmnz
        TROPICAL     -29  < dec < -9.5         42 mJy       2.01  pmnt
        EQUATORIAL    -9.5< dec <+10.0         40 mJy       1.90  pmne
        ---------------------------------------------------------------

        a point source catalogue was compiled directly from each of the
        survey zones by using an optimum filter method, as described by
        Griffith & Wright in detail in Paper 1. In addition, a set of
        images was produced for each zone in a manner very similar to
        that used by Condon et al. for the northern survey VIII/40
        (See e.g. our Paper 4). These maps have an effective resolution
        (FWHM) of about 5 arcmin. For more details, refer to the
        publications listed below for the relevant zone.

    Copyright:
        The Australia Telescope National Facility asserts copyright to
        this material. However, permission is granted for publication
        and reproduction for scholarly, educational, and private
        non-commercial use.

        Inquiries for potential commercial uses should be addressed to:
            Dr A.E. Wright,  Parkes Observatory,
            PO Box 276, Parkes NSW, 2870, Australia

    Authors:
            Alan E Wright
            ATNF, Parkes Observatory
            PO Box 276, Parkes, NSW, 2870, Australia
            awright@atnf.csiro.au

            Mark R. Griffith
            Department of Physics, Massachusetts Institute of Technology,
            Cambridge, MA 02139, USA      &
            Dept. of Astronomy FM-20, University of Washington, Seattle,
            WA 98195 USA
            griffith@astro.washington.edu

            R D Ekers
            ATNF Headquarters
            PO Box 76, Epping, NSW, 2121, Australia
            rekers@atnf.csiro.au

            B. F. Burke
            Department of Physics, Massachusetts Institute of Technology
            Cambridge, MA 02139, USA

            Andrew J Hunt
            ATNF, Parkes Observatory
            PO Box 276, Parkes, NSW, 2870, Australia
            ahunt@atnf.csiro.au

            Euan Troup
            ATNF, Parkes Observatory
            PO Box 276, Parkes, NSW, 2870, Australia
            etroup@atnf.csiro.au

    File Summary:

           FileName      Lrecl  Records   Explanations

    ×                   80        .   This file
    × ReadMe            80        .   This file
    × pmns.dat          96    23277   Southern Survey    (-87.5 to -37)
    × pmnz.dat          96     2400   Zenith Survey      (-37   to -29)
    × pmnt.dat          96    13363   Tropical Survey    (-29   to  -9.5)
    × pmne.dat          96    11774   Equatorial Survey  ( -9.5 to +10.0)

    See also:
        VIII/15 : Parkes Radio Sources Catalogue (PKSCAT90) (Wright+ 1990)
        VIII/16 : Molonglo Reference Catalogue of Radio Sources (Large+ 1991)
        VIII/40 : GB6 catalog of radio sources at 4.85GHz (Gregory+ 1996)

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

       Bytes Format  Units   Label    Explanations

       1-  3  A3     ---     ---      [PMN]
       4- 14  A11    ---     PMNJ    *PMN J2000-based source name
      16- 17  I2     h       RAh      Right ascension, J2000
      19- 20  I2     min     RAm      R.A.
      22- 25  F4.1   s       RAs      R.A.
          27  A1     ---     DE-      [- ] Sign declination
      28- 29  I2     deg     DEd      Declination, J2000
      31- 32  I2     arcmin  DEm      Dec.
      34- 35  I2     arcsec  DEs      Dec.
      36- 43  I8     mJy     Flux     4850 MHz flux density, derived from
                                        Fixed-Width fit (see Paper 1)
      44- 47  I4     mJy     e_Flux  *Estimated standard error in Flux
      48- 55  I8     mJy     GFlux   *[]? 4850 MHz flux density, derived from the
                                          General-Width fit (see Paper 1)
      56- 59  I4     mJy     e_GFlux *[]? Estimated standard error in GFlux
      60- 64  F5.1   ---     Wid1    *[]? Semi-major axis of fitted Gaussian
      65- 69  F5.1   ---     Wid2    *[]? Semi-minor axis of fitted Gaussian
      70- 76  F7.1   deg     PA       [0/180[? Position angle of Wid1, east of north
      77- 81  F5.1   ---     SI      *[]? Spectral index
          84  A1     ---     Dflag   *[JN] Observation session flag
          86  A1     ---     Xflag   *[X] Extended source flag
          88  A1     ---     Gflag   *[G] Galactic plane flag
          90  A1     ---     Zflag   *[Z] Zenith flag
          92  A1     ---     Sflag   *[S] Solar contamination flag
          94  A1     ---     Pflag   *[P] PKSCAT90 flag
          96  A1     ---     Mflag   *[M] Molonglo 408 MHz catalog flag

    Note on PMNJ:
        The J2000-derived source name. The names in this list have been
        derived from their J2000 coordinates, in a manner similar to that used
        in the PKSCAT90 catalog (Wright & Otrupcek, 1990, see cat. VIII/15).
        The first three letters, "PMN", denote the Parkes-MIT-NRAO survey, and
        the fourth letter, "J", denotes that the equinox and equator is J2000.
        The rest of the name is derived from the hours and minutes of the
        right ascension and the degrees and minutes of the declination
        (both J2000). For a few objects, the name (but not the source) is
        duplicated: in such cases an "a" or "b" was appended to the name.
    Note on e_Flux:
        The estimated standard error for Flux. A standard error >99 mJy is
        listed as 99 mJy because of space limitations: the accurate value
        can be obtained from equation (4) in the printed paper.
    Note on GFlux:
        The 4850 MHz flux density derived from the General-Width fit
        (see Paper 1). This was done for and is only meaningful for
        sources greater than about 100 mJy.
    Note on e_GFlux:
        The estimated standard error for GFlux. A standard error >99 mJy is
        listed as 99 mJy because of space limitations: the accurate value can
        be obtained from equation 4 in the printed paper.
    Note on Wid1, Wid2:
        The semi-major and semi-minor axises of the fitted Gaussian in beam
        widths. A value of 1.0 = 2.1 arcmin
    Note on SI:
        The spectral index (log(S(v))/log(v)), computed between the present
        PMN flux densities at 4850 MHz and the 2700 MHz flux density from
        PKSCAT90 (cat. VIII/15), for sources common to both databases.
    Note on Dflag:
        Session in which the source was observed:
        "J" indicates the June 1990 session
        "N" indicates the November 1990 session
    Note on Xflag:
        An "X" indicates that the source is probably extended. This
        information is only available for sources whose Fixed-Width fit
        fluxes, before the application of the flux bias corrections
        (see Paper 1), were stronger than 100 mJy.
    Note on Gflag:
        A "G" indicates that the source lies within 10 degrees of the
        Galactic plane.
    Note on Zflag:
        a "Z" indicates a source which was observed within 6 degrees
        of the Parkes telescope's zenith (latitude -33deg) and has a
        flux < 60 mJy.
    Note on Sflag:
        An "S" indicates that the source lies within 5 degrees of solar
        contamination from the telescope's sidelobes and the data listed
        may be of lower quality.
    Note on Pflag:
        A "P" indicates that this source lies within 2' of a source listed
        in the PKSCAT90 database VIII/15 and is probably the same object.
    Note on Mflag:
        An "M" indicates that this source lies within 2' of a source listed
        in the Molonglo 408 MHz catalog (Large et al. VIII/16) and is
        probably the same object.

    Acknowledgements:
        It is a pleasure to thank Alan E. Wright for his kind help during
        this visit to CDS in March 1996.

    References:
      =1991Obs...111...72L "Molonglo Reference Catalogue of Radio Sources"
          Large M.I., Cram L.E., Brugess A.M.. 1991,
          The Observatory, 111, 72
      =1993AJ....105.1666G (Paper I) "The Parkes-MIT-NRAO (PMN) surveys.
          Part I: The 4850MHz Surveys and data reduction"
          Griffith M.R., Wright A.E., 1993, Astron. J. 105, 1666
      =1994ApJS...91..111W (Paper 2) "The Parkes-MIT-NRAO (PMN) surveys.
          Part II. Source catalog for the Southern Survey"
          Wright A.E., Griffith M.R., Burke B.F., Ekers R.D., 1994,
          Astrophys. J. Suppl. Ser. 91, 111
      =1994ApJS...90..179G (Paper 3) "The Parkes-MIT-NRAO (PMN) surveys.
          Part III. Source catalog for the Tropical Survey
          Griffith M.R., Wright A.E., Burke B.F., Ekers R.D., 1994
          Astrophys. J. Suppl. Ser. 90, 179
      =1993AJ....106.1095C (Paper 4) "The Parkes-MIT-NRAO (PMN) surveys.
          Part IV. Maps for the Southern Survey"
          Condon J.J., Griffith M.R., Wright A.E., 1993, Astron. J. 106, 1095
      =1994AJ....107.2115T (Paper 5) "The Parkes-MIT-NRAO (PMN) surveys.
          Part V. Maps for the Tropical Survey"
          Tasker N.J., Condon J.J., Wright A.E., Griffith M.R., 1994,
          Astron. J. 107, 2115
      =1995ApJS...97..347G (Paper 6) "The Parkes-MIT-NRAO (PMN) surveys.
          Part VI. Source Catalog for the Equatorial Survey
          Griffith M.R., Wright A.E., Burke B.F., Ekers R.D., 1995
          Astrophys. J. Suppl. Ser. 97, 347
      =1996AJ....in.pressT (Paper 7) "The Parkes-MIT-NRAO (PMN) surveys.
          Part VII. Maps for the Equatorial survey and Zenith survey
          Tasker N.J., Wright A.E.,, Griffith M.R., 1996, Astron. J. (in press)
      =1996ApJS..103..145W (Paper 8) "The Parkes-MIT-NRAO (PMN) surveys.
          Part VIII. Source catalog for the zenith survey
          Wright A.E., Griffith M.R., Hunt A.J., Troup E., Burke B.F.,
          Ekers R.D., 1996, Astrophys. J. Suppl. Ser. 103, 145
    ================================================================================
    (End)                                     Francois Ochsenbein [CDS]  02-Oct-1996