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The History of Astrometry [PDF]

open access: yesThe European Physical Journal H, 2012
The history of astrometry, the branch of astronomy dealing with the positions of celestial objects, is a lengthy and complex chronicle, having its origins in the earliest records of astronomical observations more than two thousand years ago, and ...
Perryman, Michael
core   +5 more sources

The Future of Astrometry in Space [PDF]

open access: yesFrontiers in Astronomy and Space Sciences, 2018
This contribution focuses on the importance of astrometry and on its future developments. Over the centuries astrometry has greatly contributed to the advance of the knowledge of the Universe. Nowadays a major breakthrough is on the way due to astrometric sky surveys from space. ESA space missions Hipparcos first and then Gaia point out the outstanding
Antonella Vallenari
openaire   +6 more sources

Astrometry of circumstellar masers [PDF]

open access: yes, 2002
The circumstellar masers around evolved stars offer an interesting possibility to measure stellar parameters through VLBI astrometry. In this paper the application of this technique is discussed, including the accuracy and the uncertainties of the method.
A Eckart   +6 more
core   +5 more sources

Gaia: The Astrometry Revolution [PDF]

open access: yesProceedings of the International Astronomical Union, 2015
The power of micro-arcsecond ($\mu$as) astrometry is about to be unleashed. ESA's Gaia mission, now headed towards the end of the first year of routine science operations, will soon fulfil its promise for revolutionary science in countless aspects of ...
Bonavita, M.   +4 more
core   +7 more sources

Exoplanet search with astrometry [PDF]

open access: yesNew Astronomy Reviews, 2009
Searching for extrasolar planets by direct detection is extremely challenging for current instrumentation. Indirect methods, that measure the effect of a planet on its host star, are much more promising and have indeed led to the discovery of nearly all ...
Launhardt, Ralf
core   +4 more sources

ELSA and the frontiers of astrometry [PDF]

open access: yesEAS Publications Series, 2010
ELSA stands for the ambitious goal of `European Leadership in Space Astrometry'. In this closing contribution I will examine how the ELSA network has advanced this goal. I also look ahead to the time when the Gaia data will be published and consider what
Brown, Anthony G. A.
core   +4 more sources

Checking the possibility of determining the relative orbits of stars rotating around the center body of the Galaxy

open access: yesOpen Astronomy, 2022
The results of observations of selected stars orbiting the central body of our Galaxy, which, according to the latest data, has a mass of about 4 million of solar mass, are considered.
Shakht Natalia A.   +2 more
doaj   +1 more source

The Science of Fundamental Catalogs

open access: yesFrontiers in Astronomy and Space Sciences, 2021
This review paper discusses the science of astrometric catalogs, their current applications and future prospects for making progress in fundamental astronomy, astrophysics and gravitational physics.
Sergei M. Kopeikin, Valeri V. Makarov
doaj   +1 more source

Precise Distance Measurement for a Near-Earth Asteroid by the Refined Rotational Reflex Velocity Method

open access: yesThe Astronomical Journal, 2023
The rotational reflex velocity (RRV) method was proposed by Heinze and Metchev in 2015 and was used to measure the distances of main-belt asteroids (MBAs). Later, Lin et al. generalized this method using spherical astronomy in 2016.
B. F. Guo   +3 more
doaj   +1 more source

SQUAB—I: The First Release of Strange QUasar Candidates With ABnormal Astrometric Characteristics From Gaia EDR3 and SDSS

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Given their extremely large distances and small apparent sizes, quasars are generally considered as objects with near-zero parallax and proper motion.
Qi-Qi Wu   +15 more
doaj   +1 more source

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