Results 71 to 80 of about 41,651 (296)
Proceedings of the International Astronomical Union, 2006 AbstractWe discuss education in astrometry.
William van Altena, Magda Stavinschi
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Comparison of Gaia DR2 Parallaxes of Stars with VLBI Astrometry [PDF]
Astrophysical Journal, 2019 We compare the parallaxes of stars from VLBI astrometry in the literature to those in the Gaia DR2 catalog. Our full sample contains young stellar objects, evolved AGB stars, pulsars, and other radio stars.
S. Xu 徐 +4 more
semanticscholar +1 more source
Open Astronomy, 2011 Technological and scientific developments during the past century made a new branch of astronomy flourish, i.e. astrophysics, and resulted in our present deep understanding of the whole Universe.
Høg E.
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Corrections of proper motions in declination by using ILS data [PDF]
Serbian Astronomical Journal, 2006 There are nowadays numerous astrometric ground{based observations of some stars referred to Hipparcos Catalogue, made at many observatories during the last century.
Damljanović G., Pejović N.
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GIER: A Danish computer from 1961 with a role in the modern revolution of astronomy
, 2017 A Danish computer, GIER, from 1961 played a vital role in the development of a new method for astrometric measurement. This method, photon counting astrometry, ultimately led to two satellites with a significant role in the modern revolution of astronomy.
Høg, Erik
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, 2022 In the last years, precision astrometry has shown incredible potential as a tool to investigate the formation and evolution of our Galaxy and the Local Group. The future for this kind of science appears even brighter, with several facilities that will be dedicated to its further development. In this talk I will focus on MICADO, which is the first-light
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Microarcsecond VLBI Pulsar Astrometry with PSRπ II. Parallax Distances for 57 Pulsars [PDF]
Astrophysical Journal, 2018 We present the results of PSRπ, a large astrometric project targeting radio pulsars using the Very Long Baseline Array (VLBA). From our astrometric database of 60 pulsars, we have obtained parallax-based distance measurements for all but 3, with a ...
A. Deller +10 more
semanticscholar +1 more source
Connecting VLBI and Gaia celestial reference frames
Frontiers in Astronomy and Space Sciences, 2016 The current state of the link problem between radio and optical celestial reference frames is considered.The main objectives of the investigations in this direction during the next few years are the preparation of a comparisonand the mutual orientation ...
Zinovy Malkin
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Gaia DR2 Distances to Planetary Nebulae
Galaxies, 2020 The aim of this work is to examine distances to planetary nebulae (PNe) together with other properties that were derived from them, using the astrometry of Gaia Data Release 2 (DR2).
Iker González-Santamaría +4 more
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Symposium - International Astronomical Union, 1986 The space age and modern technology have opened a new era for astrometry. A great amount of modern, precise astrometric data and approaches is urgently needed not only for astrophysics but also for Earth Science research. The Astrometric Community looks forward to establishing a precisely specified uniform celestial frame of reference for all purposes,
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