Hipparcos: Rotational vector of the nearby stars

Research output

Abstract

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.
Original languageEnglish
Title of host publicationJourness 1999, Systemes de reference spatio-temporels
Pages1-4
Publication statusPublished - 1999

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stellar systems
galactic rotation
stars
proper motion
catalogs
poles
kinematics

Cite this

Tsvetkov, A. S. (1999). Hipparcos: Rotational vector of the nearby stars. In Journess 1999, Systemes de reference spatio-temporels (pp. 1-4)
Tsvetkov, Alexander S. / Hipparcos: Rotational vector of the nearby stars. Journess 1999, Systemes de reference spatio-temporels. 1999. pp. 1-4
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abstract = "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.",
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Tsvetkov, AS 1999, Hipparcos: Rotational vector of the nearby stars. in Journess 1999, Systemes de reference spatio-temporels. pp. 1-4.

Hipparcos: Rotational vector of the nearby stars. / Tsvetkov, Alexander S.

Journess 1999, Systemes de reference spatio-temporels. 1999. p. 1-4.

Research output

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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.

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M3 - Article in an anthology

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Tsvetkov AS. Hipparcos: Rotational vector of the nearby stars. In Journess 1999, Systemes de reference spatio-temporels. 1999. p. 1-4