Results 11 to 20 of about 324,439 (295)
Proper Motions of Jets on the Kiloparsec Scale: New Results with HST
Galaxies, 2017 The Hubble Space Telescope recently celebrated 25 years of operation. Some of the first images of extragalactic optical jets were taken by HST in the mid-1990s; with time baselines on the order of 20 years and state-of-the-art astrometry techniques, we ...
Eileen T. Meyer +9 more
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Proper motions for HST observations in three off-axis bulge fields [PDF]
, 2014 Aims. This is the second in a series of papers that attempt to unveil the kinematic structure of the Galactic bulge through studying radial velocities and proper motions.
Astraatmadja, Tri +5 more
core +3 more sources
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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Proper Motion of Solar Filaments [PDF]
Astronomy & Astrophysics, 1999 Precise measurements of heliographic position of solar filaments were used for describing the proper motion of solar filaments on the time-scale of one day. Only the velocity values more accurate than 100 m s−1 were used for the study. The filaments have a tendency to make a shaking or waving of the external structure and also to make a general ...
P. Ambrož, A. Schroll
openaire +2 more sources
Astrometry and Photometry for ≈1000 L, T, and Y Dwarfs from the UKIRT Hemisphere Survey
The Astronomical Journal, 2023 We present the positions, proper motions, and near-infrared photometry for 966 known objects with spectral types later than M that were observed as part of the the UKIRT Hemisphere Survey (UHS).
Adam C. Schneider +7 more
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Walkaway Star Candidates in IC 348 and Their Possible Birthplaces
The Astrophysical Journal, 2023 Observations and theories reveal that star-forming regions eject their members during the early evolution of the cluster. We present an initial search for stars ejected from the young cluster IC 348 based on an analysis of Gaia EDR3 astrometry of ...
Xingyu Zhou +4 more
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Proper Motion of Pulsar B1800−21 [PDF]
The Astrophysical Journal, 2006 13 pages, 1 color figure.
Brisken, W. F. +3 more
openaire +3 more sources
Lunar Occultation of MACHOs [PDF]
, 1995 Lunar occultation can be used to measure the proper motions of some of the long time scale microlensing events, $t_{e} \gsim 70$ days, now being detected toward the Galactic bulge.
Gould, Andrew +2 more
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RESULTS OF DOUBLE STARS OBSERVATIONS AT NIKOLAEV OBSERVATORY
Odessa Astronomical Publications, 2016 The results of double stars observations at Nikolayev Observatory during 2013-2014 are presented. The Washington Double Stars Catalogue (WDS) was used for observation program composing.
D. V. Bodryagin, N. V. Maigurova
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