Distance to the SNR CTB 109/AXP 1E 2259+586 by HI absorption and self-absorption

Abstract

We suggest a revised distance to the supernova remnant (SNR) G109.1-1.0 (CTB 109) and its associated anomalous X-ray pulsar (AXP) 1E 2259+586 by analyzing 21cm HI-line and 12CO-line spectra of CTB 109, HII region Sh 152, and the adjacent molecular cloud complex. CTB 109 has been established to be interacting with a large molecular cloud (recession velocity at v=-55 km s^-1). The highest radial velocities of absorption features towards CTB 109 (-56 km s^-1) and Sh 152 (-65 km s^-1) are larger than the recombination line velocity (-50 km s^-1) of Sh 152 demonstrating the velocity reversal within the Perseus arm. The molecular cloud has cold HI column density large enough to produce HI self-absorption (HISA) and HI narrow self-absorption (HINSA) if it was at the near side of the velocity reversal. Absence of both HISA and HINSA indicates that the cloud is at the far side of the velocity reversal within the Perseus Arm, so we obtain a distance for CTB 109 of 4+/-0.8 kpc. The new distance still leads to a normal explosion energy for CTB 109/AXP 1E 2259+586.

5 pages, 3 figures. Accepted by MNRAS Letters

References in corpus (14)

• Kinematic Distances to Molecular Clouds identified in the Galactic Ring Survey
• Resolution of the Distance Ambiguity for Galactic HII Regions
• Supernova remnant energetics and magnetars: no evidence in favour of millisecond proto-neutron stars
• Distances to Anomalous X-ray Pulsars using Red Clump Stars
• The Distance of the SNR Kes 75 and PWN PSR J1846-0258 System
• The Distance and Age of the SNR Kes 73 and AXP 1E 1841-045
• The Distances of SNRs Kes 69 and G21.5-0.9 from HI and 13CO Spectra
• An Improved Technique for Measurement of Cold HI in Molecular Cloud Cores
• Arecibo HI Absorption Measurements of Pulsars and the Electron Density at Intermediate Longitudes in the First Galactic Quadrant
• The radio SNR G65.1+0.6 and its associated pulsar J1957+2831
• Evidence for Shocked Molecular Gas in the Galactic SNR CTB 109 (G109.1-1.0)
• Discovery of a Highly Energetic X-ray Pulsar Powering HESS J1813-178 in the Young Supernova Remnant G12.82-0.02
• Discovery of A New Faint Radio SNR G108.2-0.6
• Extinction and Distance to Anomalous X-ray Pulsars from X-ray Scattering Halos

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