Ultraviolet observations of the spiral galaxy M33, NGC 598

Details Ultraviolet observations of the spiral galaxy M33, NGC 598 Ultraviolet observations of the spiral galaxy M33, NGC 598

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..763c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Dec. 1979, p. 763-765.

Astronomy and Astrophysics

Astronomy

6

Galactic Radiation, Spaceborne Telescopes, Spiral Galaxies, Ultraviolet Astronomy, Luminous Intensity, Magnitude, Oao 2, Sky Surveys (Astronomy), Td-1 Satellite

Scientific paper

The paper presents the ultraviolet integrated magnitudes in four wavebands centered on 2740, 2350, 1950, and 1550 A for the galaxy M33. The observations were obtained with the S2/68 sky survey telescope in the ESRO TD-1 satellite. The surface brightness of the galaxy increases towards shorter wavelengths and at 1550 A the integrated magnitude of the central 9 ft by 9 ft region is 8.1 plus or minus 0.1. The center of M33 was also observed by OAO-2 and could be compared directly to the 9 ft by 9 ft region of S2/68; normalizing at 2740 A shows the three long wavelength measures to be in agreement, but the 1550 A magnitude of S2/68 does not show the rapid increase on brightness towards shorter wavelengths.

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