Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...165..189n&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 165, no. 1-2, Sept. 1986, p. 189-196.
Astronomy and Astrophysics
Astronomy
32
Andromeda Galaxy, Galactic Nuclei, Ultraviolet Astronomy, Astronomical Photometry, Ellipticity, Galactic Structure, Interstellar Matter, Mass To Light Ratios
Scientific paper
The high resolution near-UV images of the nucleus of M31 show that there is a dust lane cutting the nucleus about 0arcsec.3 from its brightest point; this dust lane appears to be the inwards continuation of the dust filaments already known to exist in the bulge (Johnson and Hanna, 1961; Kent, 1983). If the dust does not strongly affect the UV structure of the nucleus, several important kinematical and dynamical implications concerning both the dust (and the gas) and the nature of the nuclear system can be derived: in particular, the nucleus is a system independent of the rest of the galaxy, with its own tridimensional structure, close to an oblate spheroid but with some triaxial aspects, and with a rather strong velocity-dispersion anisotropy that is consistent with a low mass-to-light ratio.
di Serego Alighieri Sperello
Lelievre Gerard
Macchetto Ferdinando D.
Nieto Jean-Luc
Perryman Michael . A. C.
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