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Division a Commission 8: Astrometry
, 2015 International audienceCommission 8 has regularly published triennial reports in the past and the current OC therefore voted to adopt a traditional format also for this special Legacy issue of the IAU Transactions.
Zacharias, Norbert +9 more
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Journal of Astronomy and Space Sciences, 2019 The Optical Wide-field patroL-Network (OWL-Net) is a global optical network for Space Situational Awareness in Korea. The primary operational goal of the OWL-Net is to track Low Earth Orbit (LEO) satellites operated by Korea and to monitor the ...
Jin Choi, Jung Hyun Jo, Sooyoung Kim
doaj +1 more source
Astrometry with Schmidt Telescopes [PDF]
International Astronomical Union Colloquium, 1984 Photographic astrometry, including work with Schmidt telescopes, can be divided into two main fields, (i) the measurement of positions of objects relative to a reference frame of stars with known celestial coordinates, and (ii) the measurement of relative proper motions and trigonometric parallaxes from a series of plates taken on the same field.
openaire +1 more source
Gaia EDR3 Astrometry Spread Function
The Astrometry Spread Function for 5D astrometry published in Gaia EDR3. No SP magnitude bins. 15 unique components of the 5x5 symmetric covariance matrix in on HEALPix level 7 (nside=128, npix=196608).
Everall, Andrew
core +1 more source
Precision Astrometry With Adaptive Optics [PDF]
, 2008 We investigate the limits of ground-based astrometry with adaptive optics using the core of the Galactic globular cluster M5. Adaptive optics systems provide near diffraction-limit imaging with the world's largest telescopes.
Cameron, P. B. +2 more
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General relativistic satellite astrometry
, 2001 The non-perturbative general relativistic approach to global astrometry introduced by de Felice et al. ([CITE]) is here extended to account for the star motions on the Schwarzschild celestial sphere. A new expression of the observables, i.e.
M. G. Lattanzi +3 more
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Using Astrometry to Break Degeneracies in Stellar Surface Mapping
The Astrophysical JournalAstrometric jitter noise arises when starspots on a rotating stellar surface move in and out of view, shifting the photocenter. This noise may limit our ability to detect and weigh small, sub-Neptune-sized planets around active stars.
Jamila S. Taaki +2 more
doaj +1 more source
High Resolution Near-Infrared Imaging Observations of the Galactic Centre [PDF]
, 2004 Ziel der vorliegenden Doktorarbeit war es, neue Erkenntnisse über die Struktur, Zusammensetzung und Dynamik des zentralen Sternhaufens unserer Milchstraße zu gewinnen.
Schödel, R. +2 more
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Direct-imaging Discovery of a Substellar Companion Orbiting the Accelerating Variable Star HIP 39017
The Astronomical JournalWe present the direct-imaging discovery of a substellar companion (a massive planet or low-mass brown dwarf) to the young, γ Doradus ( γ Dor)-type variable star HIP 39017 (HD 65526). The companion’s SCExAO/CHARIS JHK (1.1–2.4 μ m) spectrum and Keck/NIRC2
Taylor L. Tobin +25 more
doaj +1 more source