Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...302..915o&link_type=abstract
Astronomy and Astrophysics, v.302, p.915
Astronomy and Astrophysics
Astrophysics
3
Galaxies: M51, Astrometry, Reference Systems
Scientific paper
We present absolute proper motions of 14 Hipparcos stars from ground based photographic astrometry in a 2x2deg field around the spiral galaxy Messier 51. These are part of a catalogue of 340 stars with B<=16, for which positions, proper motions, and B magnitudes have been derived from a series of 16 photographic plates. Due to large epoch differences of up to 88 years between the observations, the proper motion accuracy is typically <=1mas/a. An extragalactic calibration of the proper motion zero-point is achieved by measuring the fictitious proper motions of bright extragalactic objects in the field. For this purpose, a cross-correlation technique was developed. The resulting precision of the proper motion link to an extragalactic frame is estimated as 1.0mas/a. Measurements of double stars and high proper motion stars are also discussed.
Brosche Peter
Odenkirchen Michael
No associations
LandOfFree
Toward the HIPPARCOS link: astrometry of stars and extragalactic sources in the field of the spiral galaxy M51. 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 Toward the HIPPARCOS link: astrometry of stars and extragalactic sources in the field of the spiral galaxy M51., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toward the HIPPARCOS link: astrometry of stars and extragalactic sources in the field of the spiral galaxy M51. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1351382