Rotation curve of the outer parts of our Galaxy from neutral hydrogen 21 CM line profiles

Details Rotation curve of the outer parts of our Galaxy from neutral hydrogen 21 CM line profiles Rotation curve of the outer parts of our Galaxy from neutral hydrogen 21 CM line profiles

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...163...39p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 163, no. 1-2, July 1986, p. 39-42.

Astronomy and Astrophysics

Astronomy

21

Centimeter Waves, Galactic Rotation, H Lines, Milky Way Galaxy, Radio Astronomy, Spectral Line Width, Astronomical Coordinates, Density Distribution, H Ii Regions, Radio Telescopes

Scientific paper

The rotation curve of the Galaxy in the distance range 1 < R/R0 ⪉ 1.6 is derived by a method which utilizes the whole H I 21 cm line profile in the galactic plane in the 1st and 4th galactic quadrants. In agreement with studies based on H II regions and CO clouds (Jackson et al., 1979; Blitz, 1979) no evidence is found for a fall-off below a flat rotation curve in the distance range covered by the method.

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