Galactic structure between L = 305 deg and 312 deg

Details Galactic structure between L = 305 deg and 312 deg Galactic structure between L = 305 deg and 312 deg

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...205...95g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 205, no. 1-2, Oct. 1988, p. 95-104.

Astronomy and Astrophysics

Astronomy

18

Galactic Structure, H Alpha Line, H Ii Regions, Interstellar Matter, Milky Way Galaxy, Infrared Astronomy, Radial Velocity, Radio Astronomy, Radio Sources (Astronomy)

Scientific paper

Galactic H II regions between l = 305° and l = 312° are studied using classical and scanning Hα interferometric observations. The authors analyse the radio and Hα data of all the H II regions in this area together with their stellar environment. RCW 74 is found to be the brightest part of a wider Hα emission corresponding to the large radio complex at l = 305°, at a distance between 3.5 and 4 kpc. This emission is superimposed to a faint extended Hα emission including RCW 75 at a distance of 2 kpc. The other Hα emission regions of this sector of the galactic plane can be divided into the same two groups of distances corresponding to the Sagittarius-Carina arm and the Scutum-Crux arm. More distant radio sources belong to the outermost parts of these arms.

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