Results 41 to 50 of about 7,595 (254)
, 2023 An introduction to how astrometric measurements are done with long-baseline optical interferometry, in single or dual-field, and in particular with the GRAVITY instrument.
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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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A study of optical observing techniques for extra-galactic supernova remnants: Case of NGC300 [PDF]
Serbian Astronomical Journal, 2012 We present the results of a study of observational and identification techniques used for surveys and spectroscopy of candidate supernova remnants (SNRs) in the Sculptor Group galaxy NGC300.
Millar W.C., White G.L., Filipović M.D.
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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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Proceedings of the International Astronomical Union, 2006 AbstractWe discuss education in astrometry.
William van Altena, Magda Stavinschi
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Astronomische Nachrichten, EarlyView.ABSTRACT The discovery of radio‐quiet, x‐ray thermally emitting isolated neutron stars (XINSs) in the ROSAT All‐Sky Survey revealed a previously overlooked component of the neutron star population. Advancements in x‐ray instrumentation and the availability of deep, wide‐area optical surveys now enable us to explore XINSs at fainter x‐ray fluxes and ...
Adriana Mancini Pires +11 more
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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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Review of asteroid, meteor, and meteorite‐type links
Meteoritics &Planetary Science, EarlyView.Abstract With the goal to determine the origin of our meteorites in the asteroid belt, video and photographic observations of meteors have now tracked 75 meteorite falls. Six years ago, there were just hints that different meteorite types arrived on different orbits, but now, the number of orbits (N) is high enough for distinct patterns to emerge.
Peter Jenniskens +1 more
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The Astronomical JournalSince the advent of Gaia catalog, positional precision of a ground-based telescope can be greatly improved by correction of more subtle errors, including positional biases induced by atmospheric turbulence, and some instrumental factors such as geometric
Z. J. Zheng +3 more
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The Power of (Near) Simultaneous Multi-Frequency Observations for mm-VLBI and Astrometry
Galaxies, 2017 Simultaneous or near-simultaneous observations at multiple frequency bands have the potential to overcome the fundamental limitation imposed by the atmospheric propagation in mm-VLBI observations.
María J. Rioja +5 more
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