J/AJ/80/771 5-GHz Survey of Bright Galaxies (Sramek 1975)
5-GHz survey of bright galaxies.
Sramek R.
<Astron. J. 80, 771 (1975)>
=1975AJ.....80..771S 1975AJ.....80..771S (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Radio continuum
Abstract:
The 1135 galaxies in the Reference Catalogue of Bright Galaxies (Cat.
VII/16) with declinations between +10° and +70° were
surveyed at 6-cm wavelength with a 3-sigma detection limit of about
30mf.u.; of these 149 were detected. For 90 of these galaxies,
spectral indices were obtained. There is a suggestion that the
elliptical galaxies have flat spectra more often than the spiral
galaxies.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 76 156 Galaxy flux densities
notes.dat 80 41 Individual notes
--------------------------------------------------------------------------------
See also:
VII/16 : Reference Cat. of Bright Galaxies (1st Ed.) (de Vaucouleurs+ 1964)
VII/112 : RC2 Catalogue (de Vaucouleurs+ 1976)
VII/155 : Third Reference Cat. of Bright Galaxies (RC3) (de Vaucouleurs+ 1991)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Galaxy Galaxy name (1)
9 A1 --- l_F5GHz [>] lower limit flag
10- 13 I4 mJy F5GHz Final flux density at 5GHz
15- 17 I3 mJy e_F5GHz rms uncertainty on F5GHz
19- 20 A2 --- n_F5GHz [PC R O] Notes on F5GHz (2)
22 A1 --- Note [N] N: note detailed in file "notes.dat"
24 A1 --- Diam [D] Note on the diameter (3)
27 A1 --- l_SI Limit flag on SI
28- 32 F5.2 --- SI ? Spectral index of the source (4)
34- 36 A3 --- Ref References for a second flux-density
measurement (5)
38- 76 A39 --- Notes Offset position and notes when n_F5GHz = "O "
--------------------------------------------------------------------------------
Note (1): N prefix denotes an NGC (See Cat. <VII/118/>) galaxy,
I is an IC (See Cat. <VII/118/>) galaxy, an A an anonymous galaxy.
Note (2): P: possible detection; the flux density measured with the 300ft was
less than twice the error of the 140ft flux and, therefore, the
detection was considered unconfirmed
PC: this is only a possible detection since there was a confusing
source nearby
R: the flux measured with the 140ft was greater than 1.6 times the
flux from the 300ft and the difference exceeds the range of
the errors of the two measurements. These sources are probably
resolved with the 300ft beam or they have a complex structure.
The flux density given is the 140ft measurement and the errors
may be larger than indicated.
O: the source is offset from the galaxy position. The amount and
direction of this offset is mentioned in the Notes column.
Note (3): D: the optical diameter from the RCBG (Cat. <VII/16/>) is greater than
6 arcmin; the radio source is not necessarily resolved, but the
flux densities of these large galaxies should be used with caution.
Note (4): The spectral index is defined here as flux ∼ ν^α
Note (5): References for flux densities used in determining the spectral indices
A: Dwingeloo Survey (Dixon, 1970, Cat. VII/2)
B: Ohio Survey (Dixon, 1970, Cat. VII/2)
C: De Jong (1967ApJ...150....1D 1967ApJ...150....1D)
D: De La Beaujardiere et al. (1968AnAp...31..387D 1968AnAp...31..387D)
E: Lang and Terzian (1969ApL.....3...29L 1969ApL.....3...29L)
F: Bologna Survey-B2 (Dixon, 1970, Cat. VII/2)
G: Cambridge Survey-5C2 (Dixon, 1970, Cat. VII/2)
H: Cameron (1971MNRAS.152..403C 1971MNRAS.152..403C)
I: Kellermann et al. (1969ApJ...157....1K 1969ApJ...157....1K)
J: Cambridge Survey-5C4 (Willson, 1970MNRAS.151....1W 1970MNRAS.151....1W)
K: Rogstad et al. (1973A&A....22..111R 1973A&A....22..111R)
L: van der Kruit (1973A&A....29..231V 1973A&A....29..231V)
M: Tovmassian and Terzian (1974PASP...86..649T 1974PASP...86..649T)
All spectral indices without references are based on the 1410-MHz
observations of Pfleiderer (1972MitAG..31....1P 1972MitAG..31....1P)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: notes.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Galaxy Galaxy name
9- 80 A72 --- Note Text of the note
--------------------------------------------------------------------------------
History: Prepared via OCR at CDS, and proof-read by Heinz Andernach
().
(End) James Marcout, Patricia Bauer [CDS] 20-Oct-1998