The distance to Tycho's supernova remnant /3C10/ - A rediscussion

Astronomy and Astrophysics – Astronomy

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Absorption Spectra, Astrometry, H Lines, Radial Velocity, Radio Astronomy, Supernova Remnants, Angular Resolution, Distance, Emission Spectra, Galactic Rotation, High Resolution, Hydrogen Atoms, Propagation Velocity, Shock Wave Propagation

Scientific paper

New H I observations of 3C 10 at high velocity-resolution (1 km/s) have been made with the Westerbork Synthesis Radio Telescope. H I absorption can be identified in the velocity range +8 to -52 km/s. The resulting lower limit for the distance is 4 kpc; the systematic peculiar motions in the Perseus arm have little effect on this determination. A weaker upper limit of 5 kpc has also been determined by a comparison with 3C 11.1, a nearby extragalactic source.

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