Radio observations and spectral index study of the SNR G126.2+1.6W. W. Tian1, 2 and D. A. Leahy2
1 National Astronomical Observatories, CAS, Beijing 100012, PR China
2 Department of Physics & Astronomy, University of Calgary, Calgary, Alberta T2N 1N4, Canada
(Received 11 August 2005 / Accepted 11 October 2005 )
We present new images of the low radio surface brightness Supernova Remnant (SNR) G126.2+1.6, based on the 408 MHz and 1420 MHz continuum emission and the HI-line emission data of the Canadian Galactic Plane Survey (CGPS). We find the SNR's flux densities at 408 MHz ( Jy) and 1420 MHz ( Jy) which have been corrected for flux densities from compact sources within the SNR. We list properties of the 19 brightest compact sources within G126.2+1.6 at both 408 MHz and 1420 MHz. The integrated flux density based spectral index ( ) is . The respective T-T plot spectral index is . We also find spatial variations of spectral index within the SNR: 0.2-0.6. HI observations show structures probably associated with the SNR, i.e., features associated with the SNR's southeastern filaments in the radial velocity range of -33 to -42 km s-1, and with its northwestern filaments in -47 to -52 km s-1. This association suggests a distance of 5.6 kpc for SNR G126.2+1.6. The estimated Sedov age for G126.2+1.6 is less than 5 yr.
Key words: ISM: individual objects: G126.2+1.6 -- ISM: supernova remnants
© ESO 2006