An H I absorption line study of the nonthermal shell near the Galactic center, G359.1-0.5 and several nearby unusual radio features

Details An H I absorption line study of the nonthermal shell near the Galactic center, G359.1-0.5 and several nearby unusual radio features An H I absorption line study of the nonthermal shell near the Galactic center, G359.1-0.5 and several nearby unusual radio features

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....104.1533u&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 104, no. 4, p. 1533-1538.

Astronomy and Astrophysics

Astronomy

30

Absorption Spectra, Galactic Nuclei, H I Regions, Milky Way Galaxy, Radio Sources (Astronomy), Shells (Structural Forms), Line Spectra, Molecular Gases, Very Large Array (Vla)

Scientific paper

Preliminary results are presented of 21 cm VLA H I absorption observations and continuum images of the complete nonthermal radio shell G359.1-0.5, the nonthermal radio continuum feature G359.2-0.8 (the Mouse), and G359.1-0.2 (the Snake), a nonthermal object with a linear filamentary structure. The observations show that the nonthermal shell is surrounded by and is associated with atomic gas having large negative velocities. Both the spatial distribution and velocity of the atomic gas are consistent with a previously reported complete ring of molecular material surrounding the nonothermal shell. Because of its apparent association with high velocity material, G359.1-0.5 is probably located at the distance of the Galactic center. The Snake also appears to be located near there, while the Mouse appears to be a local object.

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