2012ApJ...760...25L

Query : 2012ApJ...760...25L

2012ApJ...760...25L - Astrophys. J., 760, 25 (2012/November-3)

Discovery of X-ray emission from and distance to the supernova remnant G84.2-0.8.

LEAHY D.A. and GREEN K.S.

Abstract (from CDS):

We analyze X-ray and radio observations of the supernova remnant G84.2-0.8. 1420 MHz atomic hydrogen (H I) line and radio continuum data yield H I absorption spectra and a new H I absorption distance of 5.8-6.2 kpc. Archival X-ray observations from ROSAT and Chandra which cover the area including G84.2-0.8 are analyzed to show extended X-ray emission from G84.2-0.8. Fits to X-ray spectra from Chandra, with the new H I distance of 5.8-6.2 kpc, are used to determine the Sedov parameters of the supernova remnant. G84.2-0.8 is large (16-18 pc radius), middle aged (∼9000 yr), expanding in low-density interstellar medium (0.02/cm3), and consistent with a low explosion energy (0.8-6.5x1050 erg).

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Journal keyword(s): ISM: individual: G84.2-0.8 - ISM: supernova remnants - radio continuum: ISM - radio lines: ISM - X-rays: ISM

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
2 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
3 NAME Cyg Loop SNR 20 51.0 +30 40           ~ 964 0
4 SNR G084.2-00.8 SNR 20 53.3 +43 27           ~ 79 0
5 W 80 HII 20 55 +43.9           ~ 50 0

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