Optical emission from the outburst of SNR G73.9 + 0.9

Details Optical emission from the outburst of SNR G73.9 + 0.9 Optical emission from the outburst of SNR G73.9 + 0.9

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993azh....70..469l&link_type=abstract

Astronomicheskij Zhurnal (ISSN 0004-6299), vol. 70, no. 3, p. 469-479.

Astronomy and Astrophysics

Astronomy

3

Astronomical Interferometry, H Alpha Line, Radio Sources (Astronomy), Supernova Remnants, Visible Spectrum, Nebulae, Radial Velocity

Scientific paper

Interferometric observations of the nebula in the H-alpha line of the SNR G73.9 + 0.9 confirm the identification of the SNR's optical emission. The FWHM of the H-alpha line in the nebula is found to be around 100-120 km/s, as compared to 50-100 km/s outside the radio source. An upper limit of the expansion velocity of the nebula is found to be about 50 km/s. A genetic relation between the hierarchical system of the shells around Cyg OB1 and the SNR is possible, as this is supported by the kinematic distance of 0.5-2 kpc, which corresponds to the nebula's mean radial velocity of 4 +/- 3 km/s.

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