J/AJ/96/1655 Galactic plane VLA survey (Garwood+ 1988)
A VLA snapshot continuum survey of the first quadrant of the
galactic plane at 1.5 GHz.
Garwood R.W., Perley R.A., Dickey J.M., Murray M.A.
<Astron. J. 96, 1655 (1988)>
=1988AJ.....96.1655G 1988AJ.....96.1655G (SIMBAD/NED BibCode)
ADC_Keywords: Radio sources ; Galactic plane ; Surveys
Abstract:
We present results from a continuum VLA snapshot survey of the
galactic plane in the longitude range 0°≤l≤90° at 1.5GHz.
Observations were taken every 0.5° in longitude at b=0°. Most
fields are complete to about 30mJy peak flux density. The positions,
peak, and total flux density of 471 compact sources (<30") have been
measured. A complete sample of 329 sources is defined. An excess of
sources above that expected from extragalactic source counts is seen
for l<40° at all flux-density intervals. We find 86 compact
sources that are within 2.4arcmin of a source in the recent radio
recombination-line survey of Lockman (1989ApJS...71..469L 1989ApJS...71..469L) Source
counts excluding these 86 sources agree with extragalactic source
counts for all flux-density and longitude intervals. there may only be
a small number of galactic objects present in this survey that remain
unidentified as such.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 75 471 Source list
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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- 7 F7.3 deg GLON Galactic longitude
8- 13 F6.3 deg GLAT Galactic latitude
15- 19 F5.1 mJy Slim Completeness limit (1)
21- 22 I2 h RAh Right ascension (J2000)
24- 25 I2 min RAm Right ascension (J2000)
27- 30 F4.1 s RAs Right ascension (J2000)
32 A1 --- DE- Declination sign
33- 34 I2 deg DEd Declination (J2000)
36- 37 I2 arcmin DEm Declination (J2000)
39- 40 I2 arcsec DEs Declination (J2000)
43- 46 I4 mJy Sint Integral flux density
48- 51 I4 mJy Speak Peak flux density (in mJy/beam)
53- 57 F5.2 --- Sint/Speak Ratio of integral to peak flux density
60 I1 --- F1 [0/1] Center flag (2)
62 I1 --- F2 [0/1] Completeness flag (3)
65- 68 A4 --- Note [ALIH ] Note about other surveys (4)
70- 75 A6 --- Com Comments
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Note (1): Completness limit (uncorrected for primary-beam attenuation and
bandwidth smearing) corresponding to the field on which the source
was found.
Note (2): F1=1 if the source is within 15arcmin from the pointing center,
otherwise F1=0
Note (3): F2=1 if the the uncorrected source peak flux density is greater
than the completeness limit of the field, otherwise F2=0
Note (4): A: Survey position is less than 2.6' from the source in
Altenhoff et al. (1979A&AS...35...23A 1979A&AS...35...23A)
L: Survey position is less than 2.4' from a recombination-line source
in Lockman (1989ApJS...71..469L 1989ApJS...71..469L)
I: Interesting IR source found at survey position by
Jones, Garwood and Dickey (1988ApJ...328..559J 1988ApJ...328..559J)
H: 21cm absorption towards this source by
Garwood and Dickey (1989ApJ...338..841G 1989ApJ...338..841G)
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Acknowledgements:
Thanks are due to Heinz Andernach
who forwarded his copy (catalog numbered R115 in his list)
(End) Francois Ochsenbein [CDS] 05-May-1997