2001A&A...372..636A


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.14CEST18:33:33

2001A&A...372..636A - Astronomy and Astrophysics, volume 372, 636-643 (2001/6-3)

The radio spectral index of the Vela supernova remnant.

ALVAREZ H., APARICI J., MAY J. and REICH P.

Abstract (from CDS):

We have calculated the integrated flux densities of the different components of the Vela SNR between 30 and 8400MHz. The calculations were done using the original brightness temperature maps found in the literature, a uniform criterion to select the background temperature, and a unique method to compute the integrated flux density. We have succeeded in obtaining separately, and for the first time, the spectrum of Vela Y and Vela Z. The index of the flux density spectrum of Vela X, Vela Y and Vela Z are -0.39, -0.70 and -0.81, respectively. We also present a map of brightness temperature spectral index over the region, between 408 and 2417MHz. This shows a circular structure in which the spectrum steepens from the centre (Vela X) towards the periphery (Vela Y and Vela Z). X-ray observations show also a circular structure. We compare our spectral indices with those previously published.

Abstract Copyright:

Journal keyword(s): ISM: supernova remnants - ISM: individual: Vela X - radio continuum: ISM

Errata: Erratum vol.379 p.323 (2001)

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME GUM Nebula ISM 07 43 -42.1           ~ 388 1
2 NAME Pup A SNR 08 24 07 -42 59.8           ~ 521 1
3 NAME Vela X Psr 08 33 08.880 -45 11 24.36           ~ 245 1
4 NAME Vela XYZ Rad 08 34.0 -45 50           ~ 1117 2
5 RCW 36 HII 08 59 00.9 -43 44 10     15.20     ~ 125 0
6 RCW 38 SFR 08 59 05.50 -47 30 39.4           ~ 268 2

    Equat.    Gal    SGal    Ecl

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2020.08.14-18:33:33

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