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

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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