Radio Continuum and H92 α Recombination Line Observations of G34.26+0.15 and G5.89-0.39

Details Radio Continuum and H92 α Recombination Line Observations of G34.26+0.15 and G5.89-0.39 Radio Continuum and H92 α Recombination Line Observations of G34.26+0.15 and G5.89-0.39

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002rmxaa..38....3r&link_type=abstract

Revista Mexicana de Astronomía y Astrofísica Vol. 38, pp. 3-11 (2002) (http://www.astroscu.unam.mx/~rmaa/)

Astronomy and Astrophysics

Astronomy

3

H Ii Regions, Ism: Individual (G34.26+0.15, G5.89-0.39), Radio Lines: Ism

Scientific paper

We report VLA observations of 8.3 GHz continuum and H92 α radio recombination line towards the star forming regions G34.26+0.15 and G5.89-0.39. Both regions show considerable mean optical depth in the continuum at 8.3 GHz, τc ~= 2 , and the H92 α line can be used to study opacity variations across the face of the nebula. We detected H92 α emission in the ultracompact component A of G34.26+0.15, but not in the ultracompact component B. This result is puzzling since both ultracompact components are similar in continuum flux density and angular size. G5.89-0.39 shows strong velocity gradients in the H92 α line, but these cannot be attributed only to rotation, as previously proposed.

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