Scattered light in M8

Details Scattered light in M8 Scattered light in M8

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991rmxaa..22..285s&link_type=abstract

Revista Mexicana de Astronomia y Astrofisica (ISSN 0185-1101), vol. 22, Oct. 1991, p. 285-296. Research supported by Sistema Nac

Astronomy and Astrophysics

Astronomy

12

Cosmic Dust, H Ii Regions, Light Emission, Light Scattering, Reflection Nebulae, Visual Photometry, Abundance, Electron Density (Concentration), Electron Energy, Interstellar Matter, Line Spectra

Scientific paper

Spectrophotometry in the 3400-7400-A range is presented for six areas inside the Lagoon nebula. Values are given for the electron temperature, the electron density and the N(He(+)/N(H(+)) abundance ratios to determine the atomic contribution to the continuum emission. More than half of the continuum emission is due to dust-scattered light. In the direction of the Hourglass the 4200 and 4686 He(+) lines are detected in absorption; this result also implies that most of the continuum emission in that direction is produced by dust-scattered light as in reflection nebulae. The effective gas to dust ratio in the direction of the Hourglass is determined by two different methods.

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