Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...175..199l&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 175, no. 1-2, March 1987, p. 199-207.
Astronomy and Astrophysics
Astrophysics
56
Fabry-Perot Interferometers, Image Processing, Magellanic Clouds, Stellar Winds, Astronomical Observatories, Brightness, Continuous Spectra, Data Reduction, H Alpha Line, Nebulae
Scientific paper
The CIGALE instrument, specially adapted to low flux observations has enabled the authors to establish that the faint LMC nebula N62B (DEM 235) is a semispherical bubble, exhibiting few filaments, with dimensions of 45×60 pc. The authors interpret the gaseous motion around the O8 I central star. An expanding velocity of ±35 km s-1 is obtained. The systemic velocity, determined from the shell seen edge-on, is 282 km s-1, the r.m.s. precision of the individual measures being 7.2 km s-1. The first estimate of r.m.s. electron densities gives values within the range of usual densities in bubbles (0.3 - 3 cm-3).
Boulesteix Jacques
Georgelin Y. M.
Georgelin Y. P.
Laval A.
Marcelin Michel
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