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astro-ph1998
A Comparison of ground-based Cepheid P-L Relations with HIPPARCOS Parallaxes
H. Baumgardt, C. Dettbarn, B. Fuchs +2
The statistical test described by Wielen et al.(1994) is used to derive new zero-points of ground-based Cepheid period-luminosity (PL) and period-luminosity-colour (PLC) relations.…
astro-ph1998
NGC2613, 3198, 6503, 7184: Case studies against `maximum' disks
B. Fuchs
Decompositions of the rotation curves of NGC2613, 3198, 6505, and 7184 are analysed. For these galaxies the radial velocity dispersions of the stars have been measured and their mo…
astro-ph1998
The contribution of brown dwarfs to the local mass budget of the Galaxy
B. Fuchs, H. Jahreiss, C. Flynn
Based on the recent discoveries of free floating brown dwarfs we derive estimates of the local mass density of this population of objects. Mass density estimates from various surve…