TY - CHAP

T1 - Hipparcos: Rotational vector of the nearby stars

AU - Tsvetkov, Alexander S.

PY - 1999

Y1 - 1999

N2 - This investigation shows that the vector of rotation of nearby stars derived from the proper motions of the Hipparcos catalogue is not perpendicular to the Galactic plane. It can be interpreted as the effect of the presence of the Local Stellar system. We found that the rotation of stars nearer than 150 pc can be considered as the superposition of the Galactic rotation and the Local Stellar system rotation. The coordinates of the rotational pole are in the good agreement with the previous works devoted to the Local Stellar system. The kinematics of stars that are more distant than 200 pc is very close to the standard model of the Galactic rotation.

AB - This investigation shows that the vector of rotation of nearby stars derived from the proper motions of the Hipparcos catalogue is not perpendicular to the Galactic plane. It can be interpreted as the effect of the presence of the Local Stellar system. We found that the rotation of stars nearer than 150 pc can be considered as the superposition of the Galactic rotation and the Local Stellar system rotation. The coordinates of the rotational pole are in the good agreement with the previous works devoted to the Local Stellar system. The kinematics of stars that are more distant than 200 pc is very close to the standard model of the Galactic rotation.

KW - Hipparcos

KW - Galaxy rotation

M3 - Article in an anthology

SP - 1

EP - 4

BT - Journess 1999, Systemes de reference spatio-temporels

ER -