Galactic spiral structure outlined by diffuse nebulae in the solar neighborhood

Details Galactic spiral structure outlined by diffuse nebulae in the solar neighborhood Galactic spiral structure outlined by diffuse nebulae in the solar neighborhood

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pazh...11..448a&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 11, June 1985, p. 448-454) Soviet Astronomy Letters (ISSN 0360-0327), vol. 11, May-June

Astronomy and Astrophysics

Astronomy

2

Emission Spectra, Galactic Structure, Milky Way Galaxy, Nebulae, Solar System, Spiral Galaxies, Giant Stars, Hydrogen Clouds, Pitch (Inclination), Radio Galaxies, Stellar Evolution

Scientific paper

Spiral arms in the Galaxy were traced by 255 emission nebulae with known photometric distances. Some parameters of the spiral structure were found. Pitch angles of three arms identified with the Local, Perseus and Sagittarius arms range between 18° and 21°. The radio source W51, a giant star formation region turned out to be located in the extension of the Local arm.

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