S201 Far-Ultraviolet Atlas of the Large Magellanic Cloud.
Abstract
Far-ultraviolet electrographic images, covering the wavelength 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. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 12, 1978
- Accession Number
- ADA060437
Entities
People
- George R. Carruthers
- Thornton Page
Organizations
- United States Naval Research Laboratory