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VII/14 Galactic Supernova Remnants Catalogue (Clark+ 1976)
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Galactic Supernova Remnants Catalogue
Clark D.H., Caswell J.L.
<Mon. Not. Roy. Astron. Soc., 174, 267 (1976)>
=1976MNRAS.174..267C
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ADC_Keywords: Supernova remnants; Radio sources
Description:
The catalog contains observations for southern galactic supernova
remnants (SNRs). The observations were made at 408 MHz with the
one-mile cross-type radio telescope at the Molonglo radio observatory
between 1969 December and 1971 June and were made at 5000 MHz with the
Parkes 64-m radio telescope between 1968 May and 1973 April. The
catalog has two files (two tables in published version). The first
file lists the 97 known SNRs south of declination +18 degrees
(i.e., within the scope of the Molonglo survey and gives Molonglo and
Parkes observational data where available). For completeness the 23
known SNRs north of declination +18 degrees are listed in a
second file. The catalog includes identifications, the 408-MHz
integrated flux densities, mean angular diameters, and surface
brightnesses of the SNRs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
data1.dat 109 97 Southern (Dec < +18 deg) galactic SNRs
data2.dat 123 23 Southern (Dec > +18 deg) galactic SNRs
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Byte-by-byte Description of file: data1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- ID Galactic source number
12- 29 A18 --- Alt Other catalogue number or name
30 A1 --- n_S(408) *[(*> ] Flux density flag 1
31- 36 F6.1 Jy S(408) ? Integrated flux density estimate at 408 MHz
37 A1 --- n_S(408)b *[) *] Flux density flag 2
39 A1 --- n_S(5000) *[( *] Flux density flag 3
40- 44 F5.1 Jy S(5000) ?Integrated flux density at 5000 MHz
45 A1 --- n_S(5000)b *[) *] Flux density flag 4
47 A1 --- n_SI *[( ] Spectral Index flag 1
48- 52 F5.2 --- SI *?Spectral index between 408 and 5000 MHz
53 A1 --- n_SIb *[ )] Spectral Index flag 2
55 A1 --- l_AngDiam *[< >] " < " or " > " where applicable
56- 60 F5.1 arcmin AngDiam ?Angular diameter of remnant (arc minutes)
63- 71 E9.3 W/m2/sr/Hz B(408) ?Surface brightness at 408 MHz
72- 86 A15 --- r_S(408) *Original reference to 408 MHz flux density
90- 97 A8 --- r_S(5000) Original reference to 5000 MHz flux density
99-109 A11 --- MapRef Map reference (where possible Molonglo maps)
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Note on n_S(408), n_S(408)b, n_S(5000), n_S(5000)b:
"(" If flux densities are estimates as obtained by Shaver and Goss from
fitting Gaussians to the individual source brightness distributions
(1970 Aust. J. Phys. Astrophys. Suppl. No. 14, 133).
")" Same as above.
"*" estimated flux density is not obtained from the Molonglo
pencil-beam survey.
Note on l_AngDiam:
"<" or ">" mean less or larger than the size of the angular diameter of
remnant.
Note on n_SI*:
"(" If data other than at 408 and 5000 MHz were used to compute
the spectral index between 408 and 5000 MHz.
")" Same as above.
Note on SI:
Spectral index for those sources with flux density estimates available
at the two frequencies.
Note on r_S(408):
"revised" implies a reassessment of the earlier Molonglo data by the
authors.
Byte-by-byte Description of file: data2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- ID Galactic source number
12- 29 A18 --- Alt Other catalogue number or name
30 A1 --- n_S(408) *[( *] Flux density flag 1
31- 36 F6.1 Jy S(408) ? Integrated flux density estimate at 408 MHz
37 A1 --- n_S(408)b *[* )] Flux density flag 2
39 A1 --- n_S(5000) *[( *] Flux density flag 3
40- 44 F5.1 Jy S(5000) ?Integrated flux density at 5000 MHz
45 A1 --- n_S(5000)b *[) *] Flux density flag 4
47 A1 --- n_SI *[( ] Spectral Index flag 1
48- 52 F5.2 --- SI *?Spectral index between 408 and 5000 MHz
53 A1 --- n_SIb *[ )] Spectral Index flag 2
55 A1 --- l_AngDiam [< >] " < " or " > " where applicable
56- 60 F5.1 arcmin AngDiam ?Angular diameter of remnant (arc minutes)
63- 71 E9.3 W/m2/sr/Hz B(408) ?Surface brightness at 408 MHz
72- 87 A16 --- RefList *List of references to recent data
90- 97 A8 --- r_SI Reference for spectral index information
100-110 A11 --- MapRef *Map reference of the source
113-123 A11 --- Sv *Spectral Index defined by S(alpha)v(alpha)
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Note on n_S(408), n_S(408)b, n_S(5000), n_S(5000)b , SI, n_SI:
See Notes given for data1.dat
Note on RefList:
List of references to recent observational data for each source
Note on MapRef:
Map reference of the source with brightest resolution available
Note on Sv:
Spectral Index defined by S(alpha)v(alpha) between 408 and 5000 MHz for
those sources with flux density estimates available at the two frequencies.
The definition of alpha, nor v is given here.
Remarks and Modifications:
This galactic supernova remnant catalogue was made machine-readable at the
Goddard Space Flight Center. The data is from the paper "A study of Galactic
Supernova Remnants, Based on Molonglo-Parkes Observational Data" by D. H.
Clark and J. L. Caswell (Mon. Not. Royal Astronomical Society, 1976, 174,
267-305).
The two data files represent the data from sources south of declination
+18 degrees and sources north of declination +18 degrees, respectively.
Acknowledgements:
The original ADC documentation by Theresa A. Nagy (1979) was used to
generate this ReadMe file.
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(End) C.-H. Joseph Lyu [Hughes STX/NASA] 1996-Apr-8