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J/ApJS/93/145 Radio survey around north ecliptic pole (Kollgaard+, 1994)
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A Sensitive 1.5 GHz radio survey around the north ecliptic pole
KOLLGAARD R.I., BRINKMANN W., CHESTER M.M., FEIGELSON E.D.,
HERTZ P., REICH P., WIELEBINSKI R.
<Astrophys. J. Suppl. Ser. 93, 145 (1994)>
=1994ApJS...93..145K (SIMBAD/NED Reference)
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ADC_Keywords: Radio sources
Keywords: catalogs - radio continuum: general - surveys - X-rays: general
Abstract:
A 29.3deg^2 region surrounding the north ecliptic pole (NEP;
R.A.=18h00m, Dec.=+66d30m) was mapped with the Very Large Array at
1.5GHz to support the deepest portion of the ROSAT all-sky soft X-ray
survey. The resulting VLA-NEP survey catalog contains 2435 radio
sources with flux densities in the range of 0.3-1000mJy, including
over 200 fainter than 1mJy. The 28 fields of the inner 1.5deg have
noise levels sigma ~=60uJy, and the 85 fields centered between 1.5deg
and 3.0deg from the NEP have sigma ~=120uJy. The typical spatial
resolution is 20" HPBW, and most positions are accurate to <2".
Approximately 6% of the sources are found to be extended with size
>30". We have compared the VLA-NEP catalog with four other radio
catalogs made at lower resolution, as well as with the NASA
Extragalactic Database and find counterparts for ~18% of the VLA-NEP
objects. The normalized, differential radio source count is in
agreement with the previous studies. Between 1 and 150mJy the slope of
the logN-logS relation is 0.68+/-0.03.
Addresses:
Kollgaard R.I. <rik@astro.psu.edu>
McMath Chester M. <chester@astro.psu.edu>
Feigelson E.D. <edf@Feigelson>
Department of Astronomy and Astrophysics, Pennsylvania State University,
University Park, PA 16802
Brinkmann W. <wpb@ibma.ipp-garching.mpg.de>
Max-Planck-Institut fur Extraterrstrische Physik, Giessenbach strasse,
85740 Garching, Germany
Hertz P. <hertz@xip.nrl.navy.mil>
E.O. Hulburt Center for Space Research, Naval Research Laboratory,
Code 7621.5, Washinton, DC 20375-5352
Reich P. <p395pat@mpifr-bonn.mpg.de>
Wielebinski R. <rwielebinski@mpifrbonn.mpg.de>
Max-Planck-Institut fur Radioastronomie, Auf dem Hugel 69,
53121 Bonn, Germany
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 133 2435 VLA-NEP source catalog
table3 110 416 VLA-NEP sources with possible identifications
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1-12 A12 --- Name VLA-NEP source name (J2000)
15-17 I3 --- Field VLA-NEP field designation
20-21 I2 h RAh Right Ascension, J2000 (corrected)
23-24 I2 min RAm Right Ascension, J2000 (corrected)
26-30 F5.2 s RAs Right Ascension, J2000 (corrected)
32 A1 --- DE- Declination sign
33-34 I2 deg DEd Declination, J2000
36-37 I2 arcmin DEm Declination, J2000
39-42 F4.1 arcsec DEs Declination, J2000
44-47 F4.1 arcsec e(Pos) Net positional uncertainty
49-53 F5.1 arcmin Dis Distance of the source from the field center
55-60 F6.1 mJy Stot Corrected integrated flux density
62-65 F4.1 mJy e_Stot rms uncertainty on Stot
67-72 F6.1 mJy Speak Corrected peak flux density
74-77 F4.1 mJy e_Speak rms uncertainty on Speak
79-82 I4 --- SNR Signal-to-noise ratio of the detection
85-86 A2 --- ID 'ID'= identification listed in table 3
88-133 A46 --- Note Additional notes (1)
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Note (1):
S = suspect source which lies on an image processing artifact
D = double source, either a blend of two comparable sources or
two resolved peaks with a common envelope
D?= possible double whose features appear at less than 8 x sigma
E = extended source, either an elongated source or an object
with an asymmetric or complex shape
E?= possible extended source, whose features appear at less than
8 x sigma
Also included is the angular separation (arcminutes) between the peaks
of double sources, the angular size of extended sources (measured from
the peak to the most distant feature, minus a slight resolution
correction), and the position angle (degrees) measured from the
brightest peak.
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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1-12 A12 --- Name VLA-NEP source, see table 2, field ID
14-19 F6.1 mJy Flux []? VLA-NEP total flux density
21-29 A9 --- BWE91 BWE91 name (1)
32-34 I3 mJy SBWE91 []? BWE91 catalogued flux density
37-39 A3 --- LRW88 LRW88 name (2)
42-44 I3 mJy SLRW88 []? LRW88 catalogued flux density
47-55 A9 --- WB92 WB92 name (3)
58-60 I3 mJy SWB92 []? WB92 catalogued flux density
63-70 A8 --- LRW92 LRW92 name (4)
72-87 A16 --- NED NASA Extragalactic Database name (5)
90-93 F4.1 mag Vned []? NED visual magnitude
96-100 F5.2 --- SI1 []? Spectral index between 1.5GHz and 5GHz
102-106 F5.2 --- SI2 []? Spectral index between 1.5GHz and 2.7GHz
109-110 I2 --- Ref []? Reference number (6)
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Note (1): BWE91: Name of any 5 GHz counterpart from Becker, White & Edwards
=1991ApJS...75....1B (Catalog <VIII/13>)
Note (2): LRW88: Name of any 2.7 GHz Effelsberg counterpart from Loiseau et al.
=1988A&AS...75...67L
Note (3): WB92: Name of any 1.4 GHz counterpart from White & Becker 1992,
=1992ApJS...79..331W (Catalog <VIII/17>)
Note (4): LRW92: Name of any 8C counterpart from Lacy, Rawlings & Warner 1992,
=1992MNRAS.256..404L
Note (5): NED: Name of any NASA Extragalactic Database counterpart that is not
from the four previous surveys
Note (6): Reference number for sources with information from NED
1 Lacy, Rawlings, & Warner =1992MNRAS.256..404L
2 Zwicky & Herzog 1968, Catalogue of Galaxies and Clusters of
Galaxies (Pasadena: California Institute of Technology)
(Catalog <VII/49>)
3 Joint IRAS Science Working Group 1988, Infrared Astronomical
Satellite Catalogs, The Point Source Catalog (ver. 2)
(NASA RP-1190) (Catalog <II/125>)
4 Kojoian et al. =1981AJ.....86..820K
5 Moshir et al 1990, Infrared Astronomical Catalogs, The Faint Source
Catalog (ver. 2) (Catalog <II/156>)
6 Ashby, Houck, & Hacking =1992AJ....104..980A
7 Nilson 1973, Uppsala General Catalogue of Galaxies, Acta
Universitatis Upsalienis, Nava Regiae Societatis Upsaliensis,
Series V: vol. 1 (Catalog <VII/26>)
8 Abell, Corwin, & Olowin =1989ApJS...70....1A (Catalog <VII/110>)
9 Vorontsov-Velyaminov & Krasnogorskaja 1962, Morphological Catalogue
of Galaxies (Moscow: Moscow State University)
(Catalogs <VII/62> and <VII/100>)
10 Sovers et al. =1988AJ.....95.1647S
11 Clements 1983 =1983MNRAS.204..811C
12 Dressel & Condon 1976, ApJS, 31, 187
13 Takase & Miyauchi-Isobe 1989, Pub. Nat. Astr. Ast. Obs. Japan,
=1989PNAOJ...1...97T
14 Russell et al. =1990AJ.....99.2059R (Guide Star Catalog)
15 Burg et al. =1992A&A...259L...9B
16 Zwicky 1971, Catalogue of Selected Compact Galaxies and
Post-Eruptive Galaxies (Zurich: Offsetdruck L. Speich)
17 Tsvetkov & Bartunov 1993, Bull Inf. Centre Donnes Stellaires,
=1993BICDS..42...17T
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Origin: AAS CD-ROM series, Volume 3, 1995
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(End) Lee Brotzman [ADS] 10-Oct-94, Patricia Bauer [CDS] 16-Feb-1995