Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978sfua.book.....p&link_type=abstract
Interim Report Naval Research Lab., Washington, DC.
Astronomy and Astrophysics
Astronomy
15
Astronomical Maps, Far Ultraviolet Radiation, Magellanic Clouds, Ultraviolet Photometry, Apollo 16 Flight, Galaxies, Hydrogen, Nebulae, Stellar Spectrophotometry, Ultraviolet Astronomy
Scientific paper
Far-ultraviolet electrographic images, covering the wavelengths ranges 1050 to 1600 A and 1230 to 1600 A, were obtained of the Large Magellanic Cloud during the Apollo 16 mission with the NRL Far-Ultraviolet Camera/Spectrograph (Experiment S201). The images have about 4-arc-minute resolution and reveal early-type star associations, individual early-type LMC stars, and galactic foreground stars. The images were analyzed in the manner described in the S201 Catalog of Far-Ultraviolet Objects (NRL Report 8173), and isodensity contour maps of the LMC were generated from the far-UV images. Individual far-UV brightnesses were determined, and corrected for interstellar extinction, for 122 Lucke-Hodge associations and 157 Henize nebulas. Over 130 other objects, of which 20 were identified as galactic foreground stars, were also measured. The ratio of UV flux to hydrogen Balmer-alpha (H alpha) intensity, denoted hydrogen index, was determined for 90 of the Henize nebulas. The Atlas listing, which lists the individual far-UV flux measurements and hydrogen index determinations, is also available on a seven-track magnetic tape.
Carruthers George R.
Page Thornton
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