OH radio absorption in the Trifid nebula M20

Details OH radio absorption in the Trifid nebula M20 OH radio absorption in the Trifid nebula M20

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975sval....1..161s&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 1, Aug. 1975, p. 12-15.) Soviet Astronomy Letters, vol. 1, July-Aug. 1975, p. 161, 162.

Astronomy and Astrophysics

Astronomy

1

Absorption Spectra, Astronomical Spectroscopy, Hydroxyl Radicals, Nebulae, Formaldehyde, Hydroxyl Emission, Molecular Spectra, Radial Velocity, Supernova Remnants

Scientific paper

OH absorption measurements of the Trifid nebula were made with angular resolution 3.4 x 18 arcmin. Two spectral features were detected; the region where the strongest feature at the ray velocity 18.7 km/s was observed spatially coincides with the M20 SW formaldehyde cloud discovered by Chaisson and Willson. This cloud is a part of the molecular cloud adjacent to the supernova remnant W28.

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