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The Characteristics and Origin of the Gould's Belt

Torra, J.; Comeron, F.; Gomez, A. E.

Some statistical studies on the nearby early-type stars proposed for observations by HIPPARCOS are presented. Results on spatial orientation and kinematics are in agreement with those found in the literature. An age estimate based on non-kinematical hypothesis is found to be somewhat smaller than expansion ages derives by some authors. Finally, it…

Analysis of Neckel and Chini Standard Stars in the UBVRI Photometric System

Oriol, R.

This paper studies the list of 60 faint standard stars of Neckel and Chini (1980) in theUBVRI Johnson photometric system. These standards have been used due to the collaboration in the HIPPARCOS project of our department, but this work was made in parallel of this and the results were not used. We have re-reduced the standard stars using our own m…