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
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:
FileName Lrecl Records Explanations
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.
Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
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
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). e = S20 has been extrapolated from the values listed for α and S18 by Tarchi et al. (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) and S3.6 by Huang et al. (1994ApJ...424..114H).
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 25-Jul-2006
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