J/A+A/435/437 Brightness and diameters for extragalactic SNRs (Urosevic+, 2005)
The Σ-D relation for supernova remnants in nearby galaxies.
Urosevic D., Pannuti T.G., Duric N., Theodorou A.
<Astron. Astrophys., 435, 437-447 (2005)>
=2005A&A...435..437U 2005A&A...435..437U
ADC_Keywords: Galaxies, radio ; Galaxies, nearby ; Supernova remnants
Keywords: ISM: supernova remnants - methods: statistical -
radio continuum: galaxies
Abstract:
This paper examines relations between the radio surface brightness
Sigma and the diameter D (also known as Sigma-D relations) for a
sample of extragalactic supernova remnants (SNRs) as constructed from
a combination of published data and data from our own surveys. Our
sample of extragalactic SNRs is the largest ever devised for the
purpose of analyzing Sigma-D relations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 65 148 The basic quantities for 148 SNRs in nearby
galaxies used for deriving of the updated
Σ-D relations.
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1 A1 --- Type [NS] (N)ormal or (S)tarburst galaxies
3- 10 A8 --- Galaxy Galaxy name
12- 20 A9 --- Name Name of supernova remnant
21 A1 --- n_Name [*] *: Individual note (1)
22- 27 F6.2 pc D Diameter of SNR
31- 38 F8.3 mJy S1.4GHz Flux density at 1.4GHz
40- 44 F5.3 mJy e_S1.4GHz ? rms uncertainty on S1.4GHz
45 A1 --- n_S1.4GHz [aeD] Note on S1.4GHz (2)
46 A1 --- l_Sp-Index Limit flag on Sp-Index
47- 50 F4.2 --- Sp-Index Spectral index (3)
52- 55 F4.2 --- e_Sp-Index ? rms uncertainty on Sp-Index
56 A1 --- n_Sp-Index [bc] Note on Sp-Index (4)
58- 65 E8.3 W/m+2/Hz/sr Sigma(1GHz) Radio surface brightness at 1GHz
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Note (1): TNG 38.9+42.5 corrected into TNG 38.9+22.5 by CDS
Note (2): Notes on S1.4GHz as follows:
a = S20 has been extrapolated from the values listed for α
and S36 by Filipovic et al. (1998, Cat. J/A+AS/130/421).
D = The flux densities are from the paper by
Dickel & Milne (1995AJ....109..200D 1995AJ....109..200D).
e = S20 has been extrapolated from the values listed for α
and S18 by Tarchi et al. (2000A&A...358...95T 2000A&A...358...95T).
Note (3): We adopted published values for the spectral index alpha
(Snu∝nu-alpha) of these sources; if no spectral index
was given, a value of 0.5 was assumed.
Note (4): Notes on alpha as follows:
b = No spectral index data available; a value of α=0.5 is assumed.
c = S20 has been extrapolated from the values listed for α
by McDonald et al. (2002MNRAS.334..912M 2002MNRAS.334..912M) and
S3.6 by Huang et al. (1994ApJ...424..114H 1994ApJ...424..114H).
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 25-Jul-2006