ACDS V10.0 - Tue Apr 23 01:12:34 CEST 2019

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Detailed Description of VIII/13 :
A new catalog of 53522 4.85GHz sources (Becker+ 1991)

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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/13      A new catalog of 53522 4.85GHz sources    (Becker+ 1991)
================================================================================
A new catalog of 53522 4.85GHz sources
     Becker R.H., White R.L., Edwards A.L.
    <Astrohys. J., Suppl. Ser. 75, 1-229 (1991)>
    =1991ApJS...75....1B
================================================================================
ADC_Keywords: Radio sources


Abstract of paper:
    A catalog of 53522 4.85GHz sources between 0 and 75 degrees
    declination has been generated from observations taken with the NRAO
    Green Blank 300foot (91m) telescope. The flux limit of the catalog is
    dependent on declination and ranges from about 40mJy at 0degree to
    20mJy at 60degrees. The source positions given in the catalog have a
    95% confidence radius of about 50arcsec. Spectral indices have been
    calculated for 29051 sources which have counterparts in the Texas
    365MHz northern sky survey.

File Summary:

FileName Lrecl Records Explanations
× 80 . This file × ReadMe 80 . This file × catalog.dat 44 53522 The catalogue of radio sources
Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Name 6-cm Name, constructed from position HHMM+DDSS, with A or B added at end if needed to make name unique 12- 13 I2 h RAh Right Ascension B1950 (hours) 15- 16 I2 min RAm Right Ascension B1950 (minutes) 18- 21 F4.1 s RAs Right Ascension B1950 (seconds) 23 A1 --- DE- Declination B1950 (sign) 24- 25 I2 deg DEd Declination B1950 (degrees) 27- 28 I2 arcmin DEm Declination B1950 (minutes) 30- 31 I2 arcsec DEs Declination B1950 (seconds) 32- 37 I6 mJy Flux Flux density at 4.85GHz (mJy) (peak flux density for point sources, and integrated flux density for extended sources) 38 A1 --- extFlag [*] "*" if source is extended, else blank 40- 43 F4.1 --- SpIndex [-2/1.5]? Spectral index between 4.85GHz and 0.365GHz (1) 44 A1 --- n_SpIndex [*] "*" if separation between 4.85GHz and 0.365GHz positions is greater than 100 arcsec, else blank
Note (1): The spectral index {alpha} is d(log(Flux))/d(log(Frequency)) i.e. F{nu} {proportional.to} {nu}{alpha} The 365GHz flux is from Texas survey, Douglas et al., private comm.
FORTRAN reading: The following Fortran statements can be used to read the file: character name*10, decsgn*1, extflg, widflg integer rah, ram, decd, decm, decs, flux real rass, spind read(10,1) name, rah, ram, ras, decsgn, decd, decm, decs, & flux, extflg, spind, widflg 1 format(a10,1x,i2, 1x, i2, 1x, f4.1, 1x, a1, i2, 1x, i2, 1x, i2, & i6, a1, 1x, f4.1, a1) Historical Notes: * 21-Jul-1992: Received from ADC * 02-May-1995: documentation standardized ================================================================================ (End) Francois Ochsenbein [CDS] 02-May-1995