Spectroscopic observations of filamentary nebulae in the Cygnus X region

Details Spectroscopic observations of filamentary nebulae in the Cygnus X region Spectroscopic observations of filamentary nebulae in the Cygnus X region

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....51..159s&link_type=abstract

Astronomy and Astrophysics, vol. 51, no. 1, Aug. 1976, p. 159-162. Research supported by the Consiglio Nazionale delle Ricerche

Astronomy and Astrophysics

Astronomy

8

Astronomical Spectroscopy, Line Spectra, Nebulae, Radio Sources (Astronomy), Supernova Remnants, Emission Spectra, Fine Structure, H Ii Regions, Nonthermal Radiation, Spectral Energy Distribution, Spectrum Analysis

Scientific paper

Spectroscopic observations in the Cygnus X region indicate that the line intensity ratios in many filamentary nebulae are like those observed in old, decelerated supernova remnants, while other emission features are normal H II regions. The nebulae at the position of the nonthermal radio sources 74.8 + 0.6, 78.3 + 2.5 and 79.8 + 1.2 are typical H II regions. An optical emission nebula coincident with the nonthermal radio source W 63 seems to be the optical counterpart of the SNR.

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