Results 1 to 10 of about 323,555 (299)
Proper orthogonal decomposition of solar photospheric motions
Physical Review Letters, 2005 The spatio-temporal dynamics of the solar photosphere is studied by performing a Proper Orthogonal Decomposition (POD) of line of sight velocity fields computed from high resolution data coming from the MDI/SOHO instrument.
A. Vecchio +21 more
core +7 more sources
Independent analysis of μδ data of ILS and INDLS catalogs to obtain the spin of the bright Gaia DR2 reference frame [PDF]
Serbian Astronomical Journal, 2021 The Gaia DR2 reference frame should be without relative rotation to the quasars (QSOs) and consistent with the International Celestial Reference System (ICRS).
Damljanović G. +2 more
doaj +1 more source
Improvement of Hipparcos proper motions in declination [PDF]
Serbian Astronomical Journal, 2006 More than a decade elapsed after the HIPPARCOS ESA mission (ESA 1997) observations have been collected. This first astronomical satellite mission was less than 4 years long so that 1991.25 is the epoch of the HIPPARCOS Catalogue. Many other projects have
Damljanović Goran M. +2 more
doaj +1 more source
UrHip PROPER MOTION CATALOG [PDF]
The Astronomical Journal, 2015 11 pages, 5 figures, accepted for publication in ...
J. Frouard +4 more
openaire +2 more sources
Position and Proper Motion of Sagittarius A* in the ICRF3 Frame from VLBI Absolute Astrometry
The Astronomical Journal, 2023 Sagittarius A* (Sgr A*) is a strong, compact radio source believed to be powered by a supermassive black hole at the galactic center. Extinction by dust and gas in the galactic plane prevents observing it optically, but its position and proper motion ...
David Gordon +2 more
doaj +1 more source
Photographic zenith tubes observations to improve HIPPARCOS proper motion in declination of some stars [PDF]
Serbian Astronomical Journal, 2005 A procedure of calculation and results of an attempt to improve proper motions in declination for some HIPPARCOS stars are presented. A long series of optical observations of these stars observed with Photographic Zenith Tubes (PZT) are used.
Damljanović Goran M.
doaj +1 more source
The Astrophysical Journal, 2023 Our understanding of the kinematic properties of multiple stellar populations (mPOPs) in Galactic globular clusters (GCs) is still limited compared to what we know about their chemical and photometric characteristics. Such limitation arises from the lack
Mattia Libralato +14 more
doaj +1 more source
A Technique to Derive Improved Proper Motions for Kepler Objects of Interest [PDF]
, 2014 We outline an approach yielding proper motions with higher precision than exists in present catalogs for a sample of stars in the Kepler field. To increase proper motion precision we combine first moment centroids of Kepler pixel data from a single ...
Benedict, G. Fritz +3 more
core +4 more sources
The UKIDSS-2MASS Proper Motion Survey I: Ultracool dwarfs from UKIDSS DR4 [PDF]
, 2008 The UKIRT Infrared Deep Sky Survey (UKIDSS) is the first of a new generation of infrared surveys. Here we combine the data from two UKIDSS components, the Large Area Survey (LAS) and the Galactic Cluster Survey (GCS), with 2MASS data to produce an ...
Adelman-McCarthy +71 more
core +3 more sources
Corrections to the Hipparcos proper motions in declination for 807 stars [PDF]
Serbian Astronomical Journal, 2008 We used the data on latitude variations obtained from observations with 10 classical photographic zenith tubes (PZT) in order to improve the Hipparcos proper motions in declinations µδ for 807 stars.
Damljanović G., Pejović N.
doaj +3 more sources