An unusual radio point source in M17

Details An unusual radio point source in M17 An unusual radio point source in M17

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...242l.157f&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 242, Dec. 15, 1980, p. L157-L161.

Astronomy and Astrophysics

Astronomy

38

Nebulae, Protostars, Radio Sources (Astronomy), Stellar Evolution, Density (Mass/Volume), Electron Energy, Interferometry, Molecular Clouds, Photoionization, Shock Waves

Scientific paper

The discovery of an unusual radio point source near the southwestern boundary of the giant complex nebula M17 is reported. The source was detected in VLA observations at 21, 6 and 2 cm with a maximum resolution of 0.7 arcsec to lie between the arc-shaped ionization front and a molecular cloud. The optically thick thermal spectrum and diameter of the source indicate that it is among the densest thermal radio sources known, with an electron density greater than 1,000,000/cu cm, and has an unusually high electron temperature (greater than 25,000 K). It is suggested that the point source may be an instance of star formation induced by a partially focused shock front preceding the ionization front into the molecular cloud.

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