Spiral structure of M51 - Displacement of the H I from the nonthermal radio arms

Details Spiral structure of M51 - Displacement of the H I from the nonthermal radio arms Spiral structure of M51 - Displacement of the H I from the nonthermal radio arms

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339l..57t&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 339, April 15, 1989, p. L57-L61.

Astronomy and Astrophysics

Astrophysics

62

Extragalactic Radio Sources, Galactic Structure, H I Regions, Interstellar Matter, Spiral Galaxies, Continuous Radiation, H Ii Regions, Radio Emission, Radio Telescopes

Scientific paper

The Westerbork Synthesis Radio Telescope has been used to observe H I in the spiral galaxy M 51 at 12 x 18 arcsec resolution; the results thus obtained have been compared with the dust lane, H II-region, and nonthermal continuum emission tracers of spiral structure. The displacement of the H I arms from the region of maximum interstellar gas compression is confirmed to be more than an isolated peculiarity of a particular galaxy. The observations are simply characterized within a framework of density-wave streaming of the interstellar gas.

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