Ultraviolet slit spectroscopy in the core of 30 Doradus with the International Ultraviolet Explorer

Details Ultraviolet slit spectroscopy in the core of 30 Doradus with the International Ultraviolet Explorer Ultraviolet slit spectroscopy in the core of 30 Doradus with the International Ultraviolet Explorer

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...245...49k&link_type=abstract

Astrophysical Journal, Part 1, vol. 245, Apr. 1, 1981, p. 49-57.

Astronomy and Astrophysics

Astronomy

25

Iue, Magellanic Clouds, Nebulae, Ultraviolet Astronomy, Ultraviolet Spectra, Brightness, Cosmic Dust, Early Stars, Interstellar Extinction, Spread Spectrum Transmission, Stellar Luminosity

Scientific paper

Low resolution (about 7 A) IUE observations of the core of the 30 Doradus Nebula in the Large Magellanic Cloud are presented. Data were obtained through the large entrance aperture at 11 different positions in both the long wavelength (1900-3200 A) and short wavelength (1150-2000 A) cameras. The aperture was stepped in 10-arcsec intervals, in the direction of the long axis of the aperture, effectively yielding a 2-arcmin long slit with the central object, R136, close to the center. The brightness distribution is strongly peaked at the position of R136, but it is found that the far-ultraviolet fluxes are dominated by luminous early-type stars at any position along the slit. The behavior of the ultraviolet colors along the slit implies that the core of 30 Dor lies behind a cloud of dust extending over at least 2 arcmin = 30 pc and suggests that the reddening law changes with distance from R136.

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