CDROM/APJS/V103/P145 Source Catalog for the PMN Zenith Survey (Wright+ 1996) ================================================================================ The Parkes-MIT-NRAO (PMN) Surveys. VIII. Source Catalog for the Zenith Survey (-37.0 deg < Dec. < -29.0 deg) Alan E. Wright, Mark R. Griffith, Andrew J. Hunt, Euan Troup, B. F. Burke, and R. D. Ekers <1996, ApJS, 103, 145> =1996ApJS..103..145W ================================================================================ Abstract: We present a catalog of radio sources discovered at a frequency of 4850 MHz in the zenith zone (-37 deg < Dec. < -29 deg) of the Parkes-MIT-NRAO (PMN) surveys. The zenith survey covers 0.677 sr and contains 2400 sources to a flux limit of 72 mJy. The survey was made using the Parkes 64 m radio telescope with the NRAO multibeam receiver during 1990. The data-taking and principal reduction methods used for the PMN surveys have been extensively described in previous papers. In this paper, we describe the specific details of the zenith survey and we provide a list of sources. Later papers in the series will describe the images made from, and provide analysis of, the data. Keywords: radio continuum: general -- surveys File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- table4.dat 96 2400 Sources in the PMN zenith survey -------------------------------------------------------------------------------- Byte-by-byte Description of file: table4.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1-15 A15 --- PMNJ *PMNJ number 16-17 I2 h RAh Right ascension (J2000) 18 1X --- --- Always ':' 19-20 I2 min RAm R.A. 21 1X --- --- Always ':' 22-25 F4.1 s RAs R.A. 26 1X --- --- Blank 27 A1 --- DE- Declination sign 28-29 I2 deg DEd Declination (J2000) 30 1X --- --- Always ':' 31-32 I2 arcmin DEm Dec. 33 1X --- --- Always ':' 34-35 I2 arcsec DEs Dec. 36-43 I8 mJy Flux 4850 MHz flux density from fixed-width fit 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 beam Wid1 *[]? Semi-major axis of fitted Gaussian 65-69 F5.1 beam Wid2 *[]? Semi-minor axis of fitted Gaussian 70-76 F7.1 deg PA []? Position angle of Wid1, east of north 77-81 F5.1 --- SI *[]? Spectral index 82-83 2X --- --- Blank 84 A1 --- D *[N] Observation session flag 85 1X --- --- Blank 86 A1 --- X *[X] Extended source flag 87 1X --- --- Blank 88 A1 --- G *[G] Galactic plane flag 89 1X --- --- Blank 90 A1 --- Z *[ ] Zenith flag 91 1X --- --- Blank 92 A1 --- S *[S] Solar contamination flag 93 1X --- --- Blank 94 A1 --- P *[P] PKSCAT90 flag 95 1X --- --- Blank 96 A1 --- M *[M] Molonglo 408 MHz catalog flag -------------------------------------------------------------------------------- Notes for file: table4.dat -------------------------------------------------------------------------------- PMNJ: The entry in this column defines the J2000-derived source name (e.g. PMNJ0115-3427) in a similar manner to that used in the PKSCAT90 catalog (Wright & Otrupcek 1990) and closely following the IAU recommendations of Dickel, Lortet, & de Boer (1987, A&AS, 68, 75). The first three letters, PMN, denote the Parkes-MIT-NRAO survey, and the fourth letter denotes that the equinox and equator is J2000. The rest of the name is derived from the hours and minutes of the R.A. and the degrees and minutes of the Decl. (both J2000). For a few objects, the names (but not the sources) are duplicates: in such cases we have appended an "a" and a "b" to the names. e_Flux: An estimated 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. GFlux: The 4850 MHz flux density derived from the General-Width fit. This was done for and is only meaningful for sources greater than about 100 mJy. 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. Wid1: The semi-major axis of the fitted Gaussian in beam widths. A value of 1.0 = 2.1 arcmin Wid2: The semi-minor axis of the fitted Gaussian in beam widths. SI: The spectral index, alpha, computed between 2700 MHz from PKSCAT90 and the the present flux densities at 4850 MHz. This index is defined by the equation S proportional to nu^alpha. D: This column was used in Papers 2 and 3 to indicate the session in which a source was observed. "J" means the June and "N" the November session. All the observations for the equatorial survey were conducted in November. However, this column is included to be consistent with the previous portions of the survey. X: An "X" indicates that the source is probably extended. G: A "G" indicates that the source lies within 10 degrees of the Galactic plane. Z: This column was used in Paper 2 and 3 to indicate a weaker source that was observed near the Parkes telescope's zenith (Decl. -33 deg) where we had some trouble removing the canonical baseline (see Sect. 3 in the printed paper). The observations for the zenith survey, however, were made well off the meridian and thus lay far from the zenith. We retain this column to be consistent with the format of previous portions of the survey, although no sources found in the zenith survey are labelled with a "Z." S: 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. P: A "P" indicates that this source lies within 2' of a source listed in the PKSCAT90 database and is probably the same object. M: An "M" indicates that this source lies within 2' of a source listed in the Molonglo 408 MHz catalog (Large et al. 1981, MNRAS, 194, 693) and is probably the same object. -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 23-Apr-96