Multi tool use
Sign on
ADS Classic is now deprecated. It will be completely retired in October 2019. Please redirect your searches to the new ADS modern form or the classic form. More info can be found on our blog.
SAO/NASA ADS Astronomy Abstract Service
· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:0708.1752)
· On-line Data
· References in the article
· Citations to the Article (2497) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (14)
· Associated Articles
· Also-Read Articles (Reads History)- ·
· Translate This Page
| Title: | Validation of the new Hipparcos reduction | |
| Authors: | van Leeuwen, F. | |
| Affiliation: | AA(Institute of Astronomy, Madingley Road, Cambridge, UK) | |
| Publication: | Astronomy and Astrophysics, Volume 474, Issue 2, November I 2007, pp.653-664 (A&A Homepage) | |
| Publication Date: | 11/2007 | |
| Origin: | EDP Sciences | |
| Astronomy Keywords: | space vehicles: instruments, methods: data analysis, catalogs, astrometry, instrumentation: miscellaneous | |
| DOI: | 10.1051/0004-6361:20078357 | |
| Bibliographic Code: | 2007A&A...474..653V |
Abstract
Context: A new reduction of the astrometric data as produced by the
Hipparcos mission has been published, claiming accuracies for nearly all
stars brighter than magnitude Hp=8 to be better, by up to a factor 4,
than in the original catalogue.
Aims: The new Hipparcos
astrometric catalogue is checked for the quality of the data and the
consistency of the formal errors as well as the possible presence of
error correlations. The differences with the earlier publication are
explained.
Methods: The internal errors are followed through the
reduction process, and the external errors are investigated on the basis
of a comparison with radio observations of a small selection of stars,
and the distribution of negative parallaxes. Error correlation levels
are investigated and the reduction by more than a factor 10 as obtained
in the new catalogue is explained.
Results: The formal errors on
the parallaxes for the new catalogue are confirmed. The presence of a
small amount of additional noise, though unlikely, cannot be ruled out.
Conclusions: The new reduction of the Hipparcos astrometric data
provides an improvement by a factor 2.2 in the total weight compared to
the catalogue published in 1997, and provides much improved data for a
wide range of studies on stellar luminosities and local galactic
kinematics.
Associated Articles
Source Paper Catalog Description Catalog Description
Bibtex entry for this abstract Preferred format for this abstract (see Preferences) |
Find Similar Abstracts:
| Use: | | Authors | |
| | Title | ||
| | Keywords (in text query field) | ||
| | Abstract Text | ||
| Return: | | Query Results | Return items starting with number |
| | Query Form | ||
| Database: | | Astronomy | |
| | Physics | ||
| | arXiv e-prints |
(function(i,s,o,g,r,a,m)i['GoogleAnalyticsObject']=r;i[r]=i[r])(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-37369750-3', 'harvard.edu');
ga('send', 'pageview');
p7YKA6f75iPlp,SrzrSLc7KkXAU8oEshDyeVC9sP eZp5 K MKJQ1301NjZ,o9FxErJYaJGE81bL,8QeunDBKkI1xSZK F3iDvtUy
