A&A 447, 205-211 (2006)
DOI: 10.1051/0004-6361:20054036

Radio observations and spectral index study of the SNR G126.2+1.6

W. W. Tian^{1, 2} and D. A. Leahy<sup>2

1</sup>  National Astronomical Observatories, CAS, Beijing 100012, PR China
    e-mail: tww@bao.ac.cn
²  Department of Physics & Astronomy, University of Calgary, Calgary, Alberta T2N 1N4, Canada

(Received 11 August 2005 / Accepted 11 October 2005 )

Abstract
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

SIMBAD Objects

© ESO 2006

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