Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001pasj...53l..33z&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.53, No. 5, pp. L33-L36
Astronomy and Astrophysics
Astronomy
3
Astrometry, Catalogues, Reference Systems, Stars: Proper-Motion
Scientific paper
On the basis of Hipparcos data, whose system is believed to be quasi-inertial to within +/-0.25 mas yr-1 and to represent an internally consistent reference frame, we carried out an analysis of the SPM 2.0 proper-motion system. Comparing the Hipparcos proper motions with those of the SPM 2.0 Catalog, which provides absolute proper motions of objects measured directly relative to external galaxies, we found that the two components of the spin vector, ωx and ωz, are apparently less than the value of 0.25 mas yr-1 for the uncertainty of the Hipparcos inertiality, while the component ωy is almost twice that value. Inspecting the magnitude- and color-dependent pattern of the proper-motion difference, we found that the SPM 2.0 Catalog seems to suffer a slight color systematics with respect to the Hipparcos proper-motion system, though the result is inconclusive due to the small number of the Hipparcos and SPM 2.0 common stars.
No associations
LandOfFree
Hipparcos Proper-Motion System with Respect to SPM 2.0 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hipparcos Proper-Motion System with Respect to SPM 2.0, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hipparcos Proper-Motion System with Respect to SPM 2.0 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1006956