Radio emission of the NGC 1499 nebula at decametric wavelengths

Details Radio emission of the NGC 1499 nebula at decametric wavelengths Radio emission of the NGC 1499 nebula at decametric wavelengths

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ap%26ss..58..347k&link_type=abstract

Astrophysics and Space Science, vol. 58, no. 2, Oct. 1978, p. 347-352.

Astronomy and Astrophysics

Astronomy

2

Decametric Waves, Hydrogen Ions, Interstellar Radiation, Nebulae, Radio Sources (Astronomy), Galactic Radio Waves, Hydrogen Clouds, Radio Astronomy

Scientific paper

Observations of the ionized hydrogen region NGC 1499 have been carried out with the radio telescope UTR-2 at frequencies 12.6, 14.7, 16.7, 20 and 25 MHz. The half-power resolution of the instrument to zenith is 28' x 34' at 25 MHz. The average volume density of the non-thermal radio emission between the Sun and the nebula (1.75 x 1O~ W m3 Hz' ster' at 25 MHz), the electron temperature of the H ii nebula (Te = 4400 K), the measure of emission (ME = 1500 cm6 pc) and other parameters have been obtained. Maps of brightness distribution over the source are presented for each observation frequency. The results are compared with previously obtained data

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