Results 11 to 20 of about 323,555 (299)
Open Astronomy, 2022 This article is a presentation of a project which is a statistical study of white dwarfs’ properties carried out based on the sample of the First Byurakan Survey Blue Stellar Objects (FBS BSOs) and the Catalogue of White Dwarfs.
Mickaelian Areg M. +4 more
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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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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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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
core +2 more sources
Proper Motion of Pulsar B1800−21 [PDF]
The Astrophysical Journal, 2006 13 pages, 1 color figure.
Brisken, W. F. +3 more
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Cross-Identification of Stars with Unknown Proper Motions [PDF]
, 2010 The cross-identification of sources in separate catalogs is one of the most basic tasks in observational astronomy. It is, however, surprisingly difficult and generally ill-defined.
Adelman-McCarthy +11 more
core +2 more sources
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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Evidence for a Massive Andromeda Galaxy Using Satellite Galaxy Proper Motions
The Astrophysical Journal, 2023 We present new mass estimates for Andromeda (M31) using the orbital angular momenta of four satellite galaxies (M33, NGC 185, NGC 147, and IC 10) derived from existing proper motions, distances, and line-of-sight velocities. We infer two masses for M31: $
Ekta Patel, Kaisey S. Mandel
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