A new optical supernova remnant in Cygnus

Details A new optical supernova remnant in Cygnus A new optical supernova remnant in Cygnus

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...215l..69g&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 215, July 15, 1977, p. L69, L70. NASA-supported research.

Other

32

Emission Spectra, Light Emission, Milky Way Galaxy, Supernova Remnants, Astronomical Spectroscopy, Galactic Radiation, Line Spectra, Nebulae

Scientific paper

The letter reports the discovery of a filamentary emission-line structure at right ascension 19 hr 31 min and declination +31 deg 10 min (1950) during an emission-line survey of the Milky Way. This structure is classified as a supernova remnant on the basis of its similarity to several other SNRs, but is shown not to be part of the Gamma Cygni complex. A physical diameter of about 70 pc is obtained for this SNR along with a distance of approximately 1200 pc, a shock velocity of at least 50 km/s, an initial density of about 0.5 per cu cm, and an age of approximately 300,000 yr.

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