Results 21 to 30 of about 1,114,768 (299)
Proper Motions of Water Masers in W49 N Measured by KaVA
The Astrophysical Journal, 2023 We report the proper motions of 22 GHz water masers toward W49 N that were observed by the KVN and VERA Array (KaVA) during 2017 February–May. We found 263, 268, and 310 features in three successive epochs; they were distributed in a region of size 4 × 4
Kitiyanee Asanok +8 more
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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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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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Orbits of LMC/SMC with recent ground-based proper motions
EPJ Web of Conferences, 2012 In recent years, with new ground-based and HST measurements of proper motions of the Magellanic Clouds being published, a need of a reanalysis of possible orbital history has arisen.
Růžička A. +3 more
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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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The APM Proper Motion Project - I. High proper motion stars [PDF]
Monthly Notices of the Royal Astronomical Society, 1992 Results are presented on a subset of proper motion data with |μ|≥0.04 arcsec yr −1 from the APM Proper Motion Project. Comparisons made with the NLTT catalogue show that the levels of contamination and incompleteness in this catalogue are consistent with the random measuring errors in the proper motions.
openaire +1 more source
Determination of proper motions and membership of the open clusters NGC 1750 and NGC 1758
, 1998 The kinematic state of the open clusters NGC 1750 and NGC 1758 has been studied using newly determined proper motions for 540 stars in a field of 1.degrees 5 x 1.degrees 5 in the Taurus dark cloud region.
J.-L. Zhao +7 more
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Massive Hypervelocity Runaway Stars in the Large Magellanic Cloud
The Astrophysical Journal, 2023 Since the hypervelocity stars were discovered in the Milky Way, various mechanisms have been proposed to explain these runaway stars. Up to now, however, the dominant ejected mechanism of hypervelocity stars is still unclear.
Zehao Lin +5 more
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Chandra Proper Motions and Milliarcsecond Astrometry of 19 Pulsars
The Astrophysical JournalWe present X-ray proper motion (PM) measurements of 19 pulsars using new and archival data from the Chandra X-ray Observatory, including pulsar wind trails and X-ray filaments. Precise X-ray PMs are often limited by uncertainties in aligning observations
Jack T. Dinsmore, Roger W. Romani
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JWST-TST Proper Motions. I. High-precision NIRISS Calibration and Large Magellanic Cloud Kinematics
The Astrophysical Journal, 2023 We develop and disseminate effective point-spread functions and geometric-distortion solutions for high-precision astrometry and photometry with the JWST NIRISS instrument. We correct field dependencies and detector effects, and assess the
Mattia Libralato +29 more
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