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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)
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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
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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
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(End) Francois Ochsenbein [CDS] 02-Oct-1996