VII/14 Galactic Supernova Remnants Catalogue (Clark+ 1976)
Galactic Supernova Remnants Catalogue
Clark D.H., Caswell J.L.
<Mon. Not. Roy. Astron. Soc., 174, 267 (1976)>
=1976MNRAS.174..267C 1976MNRAS.174..267C
ADC_Keywords: Supernova remnants; Radio sources
Description:
The catalog contains observations for southern galactic supernova
remnants (SNRs). The observations were made at 408MHz with the
one-mile cross-type radio telescope at the Molonglo radio observatory
between 1969 December and 1971 June and were made at 5000MHz 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° (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° 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 Northern (Dec > +18 deg) galactic SNRs
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See also:
VII/15 : Galactic Supernova Remnants Catalog (Ilovaisky+ 1972)
VII/227 : A Catalogue of Galactic Supernova Remnants (Green 2001)
Byte-by-byte Description of file: data1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- SNR Galactic source number
12- 29 A18 --- Alt Other catalogue number or name
30 A1 --- n_S(408) [(*> ] Flux density flag 1 (G1)
31- 36 F6.1 Jy S(408) ?=- Integrated flux density estimate
at 408MHz
37 A1 --- n_S(408)b [) *] Flux density flag 2 (G1)
39 A1 --- n_S(5000) [( *] Flux density flag 3 (G1)
40- 44 F5.1 Jy S(5000) ?=- Integrated flux density at 5000MHz
45 A1 --- n_S(5000)b [) *] Flux density flag 4 (G1)
47 A1 --- n_SI [( ] Spectral Index flag 1 (G2)
48- 52 F5.2 --- SI ? Spectral index between 408/5000 MHz (G3)
53 A1 --- n_SIb [ )] Spectral Index flag 2 (G2)
55 A1 --- l_AngDiam [< >] " < " or " > " where applicable (1)
56- 60 F5.1 arcmin AngDiam ?=- Angular diameter of remnant
63- 71 E9.3 W/m2/sr/Hz B(408) ?Surface brightness at 408 MHz
72- 86 A15 --- r_S(408) Original reference to 408MHz flux
density (2)
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 (1): "<" or ">" mean less or larger than the size of the angular diameter
of remnant.
Note (2): "revised" implies a reassessment of the earlier Molonglo data by the
authors.
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Byte-by-byte Description of file: data2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- SNR Galactic source number
12- 29 A18 --- Alt Other catalogue number or name
30 A1 --- n_S(408) [( *] Flux density flag 1 (G1)
31- 36 F6.1 Jy S(408) ? Integrated flux density estimate
at 408MHz
37 A1 --- n_S(408)b [* )] Flux density flag 2 (G1)
39 A1 --- n_S(5000) [( *] Flux density flag 3 (G1)
40- 44 F5.1 Jy S(5000) ?Integrated flux density at 5000 MHz
45 A1 --- n_S(5000)b [) *] Flux density flag 4 (G1)
47 A1 --- n_SI [( ] Spectral Index flag 1 (G2)
48- 52 F5.2 --- SI ? Spectral index between 408/5000MHz,
S(alpha)v(alpha) (G3)
53 A1 --- n_SIb [ )] Spectral Index flag 2 (G2)
55 A1 --- l_AngDiam [< >] " < " or " > " where applicable
56- 60 F5.1 arcmin AngDiam Angular diameter of remnant
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 (1)
90- 97 A8 --- r_SI Reference for spectral index information
100-110 A11 --- MapRef Map reference of the source (2)
113-116 I4 MHz Freq1 Lower value of alpha
118-123 I6 MHz Freq2 Upper value of alpha
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Note (1): List of references to recent observational data for each source
Note (2): Map reference of the source with brightest resolution available
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Global Notes:
Note (G1): Flag as follows:
( = 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 (G2): The notes in n_SI mean the following:
( = data other than at 408 and 5000MHz were used to compute the spectral
index between 408 and 5000 MHz.
) = Same as above.
Note (G3): SI is the spectral index for those sources with flux density
estimates available at the two frequencies.
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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 = 1976MNRAS.174..267C 1976MNRAS.174..267C).
Acknowledgements:
The original ADC documentation by Theresa A. Nagy (1979) was used to
generate this ReadMe file.
(End) C.-H. Joseph Lyu [Hughes STX/NASA] 08-Apr-1996