Maps of high-velocity hydrogen clouds

Details Maps of high-velocity hydrogen clouds Maps of high-velocity hydrogen clouds

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234...27w&link_type=abstract

Astrophysical Journal, Part 1, vol. 234, Nov. 15, 1979, p. 27-32.

Astronomy and Astrophysics

Astrophysics

10

Astronomical Maps, Cosmic Gases, Hydrogen Clouds, Intergalactic Media, Magellanic Clouds, Andromeda Galaxy, High Speed, Radio Spectra, Spiral Galaxies, Supernova Remnants

Scientific paper

Maps are presented for four high-velocity hydrogen clouds toward the center of the local group, and of two clouds within the Magellanic Stream. The four clouds have diameters 20-40 arc min, surface densities 2 x 10 to the 19th atoms/sq cm, and half-widths of about 20 km/s, similar to concentrations within previous high-velocity clouds. They are quite different from the clouds within the Magellanic Stream which have diameters of about 1 deg, surface densities not greater than 10 to to the 19th/sq cm, and half-widths of about 40 km/s. The clouds could have resulted from a close encounter between M33 and M31 or may be part of a local supernovae shell.

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