Radio continuum and radio recombination line observations of Sagittarius B1 and G0.6-0.0

Details Radio continuum and radio recombination line observations of Sagittarius B1 and G0.6-0.0 Radio continuum and radio recombination line observations of Sagittarius B1 and G0.6-0.0

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...401..168m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 401, no. 1, p. 168-181.

Astronomy and Astrophysics

Astronomy

27

Continuous Spectra, Line Spectra, Radio Sources (Astronomy), Radio Spectra, H Ii Regions, Sagittarius Constellation, Spatial Resolution, Spectral Resolution, Very Large Array (Vla)

Scientific paper

Continuum emission and H110-alpha recombination line emission from Sgr B1 and G0.6-0.0 have been observed using the VLA. It is shown that Sgr B1 is a region of great complexity, both spatially and kinematically. The continuum observations show that this region is dominated by many extended features rather than compact sources. On the other hand, Sgr B2 is dominated by several ultracompact H II regions. The two regions may be in different stages of evolution, with Sgr B1 being older, perhaps by as much as 0 exp 6 yrs. The recombination line study shows that Sgr B1 is composed of two distinct kinematic regions, a simple western one and a more complex eastern one. G0.6-0.0 is a region composed of at least four ultracompact H II regions that is situated between Sgr B1 and Sgr B2. There is an arc of ionized gas that lies to the east and to the south of these compact regions. The velocity of G0.6-0.0 is intermediate between those of Sgr B1 and Sgr B2. These facts strengthen the argument that these regions are physically associated.

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