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Two UV colours of the central part of M 31 (1976)

Vuillemin, A. ; Laget, M. ; Monnet, G. ; [et al.]

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Publication Date: 2011-08-16

Description: Two photographs of the galaxy M 31 have been obtained in the far UV with a Faust rocket experiment and in the near UV with the S 183 experiment aboard Skylab. Only the central part of the galaxy is detected. Reductions provide both the energy received and the angular area over M 31 from which it is emitted. The UV flux is brighter than expected from extrapolation of the visible spectrum. The distribution below 300 A is rather flat and different from previous OAO-2 observations. These results, combined with Lyman continuum flux evaluation, are used to discuss the temperature and the age of the stars which may be responsible for this anomalous UV distribution.

Keywords: ASTROPHYSICS

Type: Astronomy and Astrophysics; 50; 3, Au; Aug. 197

Format: text

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