9 papers
Spiral structure parameters in the solar neighbourhood
D. Fernandez, X. Luri, F. Figueras +1
Two samples of O- and B-type stars and Cepheids with Hipparcos data have been used to characterize galactic rotation and spiral arm kinematics in the solar neighbourhood. An extens…
Kinematics of young stars (I): Local irregularities
J. Torra, D. Fernandez, F. Figueras
The local velocity field of young stars is dominated by the galactic rotation, the kinematics of the Gould Belt and the nearest OB associations and open clusters, and the kinematic…
On the Evolution of Moving Groups: An Application to the Pleiades Moving Group
R. Asiain, F. Figueras, J. Torra
The disruption of stellar systems, such as open clusters or stellar complexes, stands out as one of the most reasonable physical processes accounting for the young moving groups ob…
Determination of the LMC distance modulus from the Classical Cepheid Period-Luminosity relation
Xavier Luri, J. Torra, F. Figueras +3
The distance modulus of the Large Magellanic Cloud (LMC) is the first step on the determination of the cosmic distance scale. In this paper it is obtained from a new calibration of…
The LMC distance modulus from Hipparcos RR Lyrae and classical Cepheid data
X. Luri, A. E. Gomez, J. Torra +2
The LM method, designed to exploit the Hipparcos data to obtain luminosity calibrations, is applied to derive luminosity calibrations for RR Lyrae and classical Cepheids. From thes…
Absolute magnitudes and kinematics of CP stars from Hipparcos data
A. E. Gomez, X. Luri, V. Sabas +5
The position in the HR diagram and the kinematic characteristics of different kinds of CP stars of the upper main sequence are obtained using the LM method (Luri et al., 1996). Mos…