Independent analysis of μδ data of ILS and INDLS catalogs to obtain the spin of the bright Gaia DR2 reference frame [PDF]
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
Abstract The CatWISE2020 Catalog consists of 1,890,715,640 sources over the entire sky selected from Wide-field Infrared Survey Explorer (WISE) and NEOWISE survey data at 3.4 and 4.6 μm (W1 and W2) collected from 2010 January 7 to 2018 December 13.
Federico Marocco+22 more
openaire +6 more sources
Milton, Anon e prosódia na "Trilogia dos Gigantes" [PDF]
Neste contributo investigam-se possíveis referências do projecto pessoano póstumo intitulado “Trilogia dos Gigantes” a partir da Biblioteca Particular de Fernando Pessoa – apresentam-se títulos que se debruçam sobre a mitologia grega e os Gigantes em ...
Filipe, Teresa, Ferrari, Patricio
doaj +1 more source
The 100 strongest radio point sources in the field of the Large Magellanic Cloud at 1.4 GHz [PDF]
We present the 100 strongest 1.4 GHz point sources from a new mosaic image in the direction of the Large Magellanic Cloud (LMC). The observations making up the mosaic were made using Australia Telescope Compact Array (ATCA) over a ten year period and ...
Payne J.L.+4 more
doaj +1 more source
Measuring chandler wobble amplitude variations using IERS EOP C04 data [PDF]
We analyzed the Earth's long-term polar motion using the time series IERS EOP C04 (International Earth Rotation and Reference Systems Service - IERS; Earth Orientation Parameters - EOP; Combination of four (04) techniques - C04), from 1984 to ...
Damljanović G., Vasilić V.
doaj +1 more source
20 cm VLA radio-continuum study of M31-images and point source catalogues DR2: Extraction of a supernova remnant sample [PDF]
We present Data Release 2 of the Point Source Catalogue created from a series of previously constructed radio-continuum images of M31 at λ=20 cm (v=1.4 GHz) from archived VLA observations.
Galvin T.J., Filipović M.D.
doaj +1 more source
Observational data on galactic supernova remnants: I. The supernova remnants within l = 0◦ - 90◦ [PDF]
We have collected all the available data on Galactic supernova remnants given in the literature. The data on Galactic supernova remnants located in the Galactic longitude interval l=0◦-90◦ in all the spectral bands are presented in this work.
Guseinov O.H., Ankaj A., Tagieva S.O.
doaj +1 more source
Large Synoptic Survey Telescope: From science drivers to reference design [PDF]
In the history of astronomy, major advances in our understanding of the Universe have come from dramatic improvements in our ability to accurately measure astronomical quantities. Aided by rapid progress in information technology, current sky surveys are
Ivezić Ž.+19 more
doaj +1 more source
New 20-cm radio-continuum study of the small Magellanic cloud - part III: Compact Hii regions [PDF]
We present and discuss a new catalogue of 48 compact Hii regions in the Small Magellanic Cloud (SMC) and a newly created deep 1420 MHz (λ=20 cm) radio-continuum image of the N19 region located in the southwestern part of the SMC.
Wong G.F.+5 more
doaj +1 more source
Consolidation of the Gaia catalogue with Chinese Space Station Telescope astrometry
The issue of preservation and improvement of the Gaia catalogue throughout the next few decades is addressed. The goal of this study is to evaluate the feasibility of astrometric parameter update, for objects already in the catalogue, by inclusion of new
M. Gai+6 more
doaj +1 more source