SIMBAD references

2008MNRAS.391L..54T - Mon. Not. R. Astron. Soc., 391, L54-L58 (2008/November-3)

The distances of supernova remnants Kes 69 and G21.5-0.9 from HI and 13CO spectra.


Abstract (from CDS):

We obtain new Hi and 13CO images around supernova remnants Kes 69 and G21.5-0.9. By comparing Hi spectra with 13CO emission spectra, we significantly revise the kinematic distance for Kes 69 to ∼5.5 kpc, which was 11.2 kpc, and refine the kinematic distance for G21.5-0.9 to ∼4.8 kpc. For Kes 69, the highest velocity of absorption is ∼86 km/s and a prominent Hi emission feature at ∼112 km/s has no respective absorption. These new results suggest that Kes 69 is associated with a newly detected extended 1720-MHz OH maser at velocity of ∼85 km/s that originates from within the bright southern radio shell of Kes 69. For G21.5-0.9, the highest velocity of absorption is ∼67 km/s. The Hi absorption spectra of the nearby bright source PMN J1832-1035 and Kes 69 show a common absorption feature at velocity of ∼69 km/s, which is not seen for G21.5-0.9. The resulting velocity of ∼68 km/s gives the best distance estimate of ∼4.8 kpc for G21.5-0.9 and associated young pulsar J1833-1034.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): masers - methods: data analysis - pulsars: individual: J1833-1034 - cosmic rays - supernova remnants

Simbad objects: 6

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