[ CATS home ] [ Back to CATS list ] [ ftp ]


1972CornU.T00A....Niell
1972CornU.T00A....Niell, A.E.
 Flux densities and spectra of extragalactic radio sources
     PhD thesis, Cornell Univ., 1972
     (OCR+proof by H.Andernach 11/95)  added RADEC1950 by Trushkin with CATS

Appendix A. (p. 236)          N=566 sources at 430 MHz

Source    RA1950      DEC1950       S430   Total angul.  S    Number
	  from 4C or PKSCAT90               RMS   size  430 MHz of      Comments
				    Total  Error  ref.  Peak   Scans
----+----1-----+----2----+----3----+----4----+----5---------------------------
0002+12   00 02 51.0  12 35 36       5.10   .30  FII    4.68  2

Appendix B. The 430 MHz Complete Sample:  173 sources with S430MHz >3 Jy

Col 1: Parkes designation for the source.
Col 2: Flux density at 430 MHz from Appendix A.
Col 3: Spectral index between 178 and 430 MHz.
Col 4: Spectral index between 430 and 1400 MHz.
Col 5: Spectral classification below 1400 MHz (sect. 5.1):
           ST  power law from 38 to 1400 MHz
          (ST) power law from 178 to 1400 MHz; the 38 MHz flux
                   density is missing or ambiguous
           C-  spectral index increases beginning below 1400 MHz
           C+  spectral index begins to decrease below
          m(v) the spectrum exhibits a simple maximun at approximately v(MHz)
          Cpx  the spectrum is complex
Col 6: Identification (section 5.6):
          G  galaxy
          Q  quasar
          B  blank field
          -  unidentified
Col 7: Reference for the identification:
          B - Bolton (1968)
          BCSV - Bolton, Clarke, Sandage and Veron (196S)
          BE - Bolton and Ekers (1966)
          BKW - Bolton, Kinman and Wall (1968)
          BSSI - Bolton, Shimmins and Merkelijn (1968)
          CI - MacDonald, Kenderdine & Neville (1968) (MKN)
          CII - Mackay (1969)
          CIII - Elsmore and Mackay (1969)
          CBS - Clarke, Bolton and Shimmins (1966)
          F - Fomalont (1971)
          G - Griffin (1963)
          J - Jauncey (private communication)
          KS - Kristian and Sandage (1970)
          MM - Macdonald and Miley (1971)
          MMM - Maltby, Mathews and Moffet
          M - Merkelijn (1969)
          P - Ekers (1969)
          SVW - Sandage, Veron and Wyndham
          SB - Searle and Bolton (1965)
          S - Shimmins (1968b)
          SMH - Shimmins, Manchester and Harris (1969)
          WB - Wills and Bolton (1969)
          W - Wyndham (1966)
Col 8: A (+) indicates that the source is included in the 178 MHz    
          complete sample (sect. 5.5).

                      al(430,1400)     ID                178 MHz
Source  S430  al(178,430)  v<1400MHz     Reference        Sample   
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
0002+12     5.10    .48    .82 ?       G       BE          
0007+12     4.43    .92    .78 ST      G       CBS         +

Appendix C. Measurements at 111.5, 318 and 606 MHz

The results of the measurements of the calibration sources at 111.5, 318 and 606 MHz
are given in this Appendix. The table is self-explanatory. An asterisk following the
source name indicates a note following the table.

Notes to Appendix C
Structure References:
   C1 - MKN = Macdonald et al. (1968)
   C2 - Mackay (1969)
   C3 - Elsmore & Mackay (1969)
   F1 - Fomalont (1968)
   F2 - Fomalont (1971)
   F3 - Fomalont and Moffet (1971)
  MLO - Large and Schilizzi (private communication)
    P - Pauliny-Toth and Kellermann (1968)

+ The flux density at 111.5 MHz is uncertain because of known confusion
 or because of uncertainty in the baseline. This source should not be
 used as a calibrator below 318 MHz.

 * Comments on individual sources:

3C31: MKN maps show a complex structure, with the possible presence of an
    extended halo. The Arecibo angular size correction is therefore very uncertain.

3C98: Spectral indices of 0.3 and 1.0 for the preceding and folloving
    components, respectively, fit the spectral data for KPW and would broaden
    the Cambridge beam at 408 MHz by less than 10%. These values have been
    used in the correction for partial resolution.

3C142.1: In KPW the flux density at 1400 MHz was corrected for a broadening of
       4.2 arcmin based on Pauliny-Toth et al. (1966) but the source
       is unresolved at 5000 MHz (Pauliny-Toth and Kellermann, 1968) and has a
       half width of 0.5 arc min at 1400 MHz (Fomalont, 1968). Had the peak
       flux density been used at 1400 MHz, this source would have been included
       as a provisional standard.

3C264: Aperture synthesis observations (MKN) give a size of 1 arcmin by 2 arcmin
    at 1400 MHz and 2 arcmin by 4 arcmin at 408 MHz. KPW have used an integrated
    flux density at 1400 MHz corresponding to a size of 3 arcmin (Pauliny-Toth
    et al., 1966). At 5000 MHz Pauliny-Toth and Kellermann (1968) made no
    correction giving the reason that MKN saw no halo as observed by Fomalont (1968).

3C334: At 2695 MHz a correction of 20% was made for partial resolution
      (Kellermann et al., 1968) but no broadening was reported at 5000 MHz
      (Pauliny-Toth and Kellermann, 1968). MKN give a size of less than 1 arcmin.

3C382: MKN give an angular separation of 2.5 arcmin at positicn angle 53 deg
    which would require a correction of 12% to the peak flux density at
    5000 MHz. Fomalont (1968) gives an angular size in right ascension of
    1.4 arcmin which would give a correction of 3.8% at 5000 MHz. Pauliny-Toth and
    Kellermann (1968) have applied a correction of only 2% at 5000
    MHz based on Fomalont's data, and no corrections were made at 2695 ANz
    (Kellermann et al., 1968) or 1400 MHz (Pauliny-Toth et al. 1966).

		      from 3CR             | -- 111.5 MHz --| ---- 318 MHz -- | --- 606 MHz --- |Structure
3C name IAUname  RA1950       DEC1950       Peak Corr  Err   Peak  Int   Err   Peak  Int   Err   Ref
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8--------------------------
3C9      0017+15 00 17 50.08   15 24 07.51   24.0        3.9   9.33        .41   4.80         .30  C3

1972Cornell.PhD...Niell, A.E.; Flux densities and spectra of extragalactic radio sources
       (OCR+proof by H.Andernach 11/95)

APPENDIX D. Measurements at 750 and 1400 MHz.         (page 269 ff)

Results are given for the measurements at 750 and 1400 MHz made with
the 300 foot NRAO telescope. The 1950.0 position at which each source
was observed is given in Columns 1 (right ascension) and 2(declination).
The declination is rounded to the nearest arcmin, and the reference for
the declination is given in Column 3:
  O     - Olsen (1967)
  N     - preliminary Arecibo position; uncertainty <1'
  A     - Arecibo accurate position: Hazard et al. (1969);
	  Backer et al. (1970); D. Backer (private communication) .
  AO    - Arecibo occultation position (J. Sutton, private communication) .
  NRAO  - Pauliny-Toth, Wade and Heeschen (1966); Pauliny-Toth (priv comm.)
  *     - 4C position (Gower, Scott and Wills, 1967; Pilkington & Scott 1965).
  M     - Molonglo: Munro (private communication)
  P     - Parkes 0 deg to 20 deg

The flux densities at 750 and 1400 MHz, on the scale of Pauliny-Toth, Wade
and Heeschen (1966), are given in Columns 4 and 5, respectively. The
observing sessions in which the measurements were made are indicated in
Column 6:     1 - June 1967
	      2 - August 1967
	      3 - January 1968
	      4 - May 1968

In general the results listed for a source observed in two or more
periods is the average of all observations with sessions 3 and 4 receiving
twice the weight of sessions 1 and 2.

Observed Position
Name       RADEC_B1950  ref   S750/Jy  S1400 Session
----+----1----+----2----+----3----+----4----+----5
000349-0021 000349 -0021  AO     6.11   3.82  3