Spectrophotometry of the optical emission from RCW103 and Milne 23

Details Spectrophotometry of the optical emission from RCW103 and Milne 23 Spectrophotometry of the optical emission from RCW103 and Milne 23

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88.1210r&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 88, Aug. 1983, p. 1210-1221. Research supported by the Universidad de Chile.

Astronomy and Astrophysics

Astronomy

18

Stellar Spectrophotometry, Supernova Remnants, H Lines, Nitrogen, Optical Emission Spectroscopy, Vidicons

Scientific paper

Vidicon tube spectrograms have been obtained for five different filaments in RCW 103 and three filaments in Milne 23, and the region between 3700 and 7400 A was covered with overlapping spectra. The H-alpha/H-beta ratio of RCW 103 indicates visual absorption variations of up to 1.5 mag for different filaments, and the 4.4 mag minimum value found implies a distance of 6.5 kpc from the sun and a galactocentric distance of 4 kpc. A temperature of about 100,000 K and 10-100/cu cm density are obtained through observed line ratio comparisons with models. The Milne 23 filaments' observed H-alpha/H-beta ratios imply a visual absorption of about 0.5 mag, with densities of 5/cu cm and temperatures over 250,000 K being suggested by line ratios.

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