Developments in Astrometry and Their Impact on Astrophysics and Geodynamics

Developments in Astrometry and Their Impact on Astrophysics and Geodynamics
Author :
Publisher : Springer Science & Business Media
Total Pages : 446
Release :
ISBN-10 : 9789401117111
ISBN-13 : 940111711X
Rating : 4/5 (11X Downloads)

Book Synopsis Developments in Astrometry and Their Impact on Astrophysics and Geodynamics by : Ivan I. Mueller

Download or read book Developments in Astrometry and Their Impact on Astrophysics and Geodynamics written by Ivan I. Mueller and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this review talk, I would like to report on the proper motion analysis, which has been recently carried out together with M. Soma and M. Yoshizawa: There has been a persistent demand in astronomy for accurate stellar positions and proper motions, which are represented by an inertial reference system constructed on the basis of a set of consistent astronomical constants. In the reference system the precessional constant plays a primary role. In a series of papers Fricke (1967a,b, 1977a,b) has deter mined the luni-solar precessional correction to Newcomb's value and the fictitious motion of the equinox, which have been adopted in the "IAU (1976) System of Astronomical Con stants". Based on the precessional correction and the equinoctial motion thus established, the fundamental reference system, the FK5 system (Fricke et al. 1988) for positions and proper motions, has been constructed. However, for several years geodetic VLBI (McCarthy & Luzum 1991) and LLR (Williams et at. 1991) observations have been suggesting an additional correction to the luni-solar precessional constant of the IAU (1976) System. That is, these observations indicate the precessional correction of 6. p ~ -0:'30/cent to the FK5 system. But, the observational period ofthe earth orientation is considered to be still insufficient to separate unambiguously the precessional change of the earth orientation from the nutation with the longest period of 18. 6 years.


Developments in Astrometry and Their Impact on Astrophysics and Geodynamics Related Books

Developments in Astrometry and Their Impact on Astrophysics and Geodynamics
Language: en
Pages: 446
Authors: Ivan I. Mueller
Categories: Science
Type: BOOK - Published: 2013-12-01 - Publisher: Springer Science & Business Media

DOWNLOAD EBOOK

In this review talk, I would like to report on the proper motion analysis, which has been recently carried out together with M. Soma and M. Yoshizawa: There has
Developments in Astrometry and Their Impact on Astrophysics and Geodynamics
Language: en
Pages: 440
Authors: International astronomical union
Categories:
Type: BOOK - Published: 1993 - Publisher:

DOWNLOAD EBOOK

Developments in Astrometry and Their Impact on Astrophysics and Geodynamics
Language: en
Pages: 0
Authors: International astronomical union
Categories:
Type: BOOK - Published: 1993 - Publisher:

DOWNLOAD EBOOK

Astrometry for Astrophysics
Language: en
Pages: 431
Authors: William F. van Altena
Categories: Nature
Type: BOOK - Published: 2013 - Publisher: Cambridge University Press

DOWNLOAD EBOOK

Unifying work by a broad range of experts in the field, this is the most complete textbook on observational astrometry.
Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry
Language: en
Pages: 427
Authors: Erik Høg
Categories: Science
Type: BOOK - Published: 2013-12-01 - Publisher: Springer Science & Business Media

DOWNLOAD EBOOK

Astrometry is on the threshold of great changes due to the fact that this decade, alone, is witnessing an improvement of stellar positions equivalent to the tot