Results 261 to 270 of about 1,114,768 (299)

Detection of proper motion in OQ 208?

open access: yesNew Astronomy Reviews, 2000
Abstract We report on an ongoing project aimed to detect the separation speed of the two hot-spots of the Compact Symmetric Object OQ208. Comparing images at 8.4 GHz taken in 6 epochs between 1994 and 1997 we obtain an estimate of 0.061±0.024 mas/year for the relative motion between the two outer and compact components of the radio source, and a ...
Liu Xiang   +3 more
openaire   +2 more sources

The PMA Catalogue: 420 million positions and absolute proper motions

open access: yesMonthly Notices of the Royal Astronomical Society, 2017
We present a catalogue that contains about 420 million absolute proper motions of stars. It was derived from the combination of positions from Gaia DR1 and 2MASS, with a mean difference of epochs of about 15 yr.
V M Shulga, A B Velichko
exaly   +2 more sources

Proper Motions of Faint Stars in the Region of the Hyades. On the Proper Motion of HZ22

1962
Abstract : The occurrence of stars of very low luminosity in the Hyades galactic cluster is determined by measurement of proper motions. Tables are included on moving objects detected within the cluster.
openaire   +1 more source

Motion ‘proper’*

Australian Veterinary Journal, 2000
openaire   +1 more source

Dynamics of Linear Control Systems on the Group of Proper Motions

Journal of Dynamical and Control Systems, 2023
Víctor Ayala, Adriano da Silva
exaly  

The lowell proper motion program

Vistas in Astronomy, 1959
openaire   +1 more source

Quasars with large proper motions: A selection from the LQAC-5 catalogue combined with Gaia EDR3

Astronomy and Astrophysics, 2022
Sébastien Lambert   +2 more
exaly  

Absolute proper motions of globular clusters

Astronomical and Astrophysical Transactions, 2006
A K Dambis
exaly  

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