Results 21 to 30 of about 196,002 (296)

Measuring chandler wobble amplitude variations using IERS EOP C04 data [PDF]

Serbian Astronomical Journal, 2023
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

The construction of large-scale structure catalogs for the Dark Energy Spectroscopic Instrument [PDF]

Journal of Cosmology and Astroparticle Physics
We present the technical details on how large-scale structure (LSS) catalogs are constructed from redshifts measured from spectra observed by the Dark Energy Spectroscopic Instrument (DESI).
A. Ross, J. Aguilar, S. Ahlen, S. Alam, A. Anand, S. Bailey, D. Bianchi, S. Brieden, D. Brooks, E. Burtin, A. Rosell, E. Chaussidon, T. Claybaugh, S. Cole, K. Dawson, A. Macorra, A. D. Mattia, A. Dey, B. Dey, P. Doel, K. Fanning, S. Ferraro, J. Ereza, A. Font-Ribera, J. Forero-Romero, E. Gazta˜naga, H. Gil-Mar´ın, S. Gontcho, A. Gontcho, A. Gonzalez-Morales, J. Guy, C. Hahn, S. Heydenreich, K. Honscheid, C. Howlett, M. Ishak, T. Karim, D. Kirkby, T. Kisner, H. Kong, A. Kremin, A. Krolewski, A. Lambert, M. Landriau, J. Lasker, L. Guillou, M. Levi, M. Manera, P. Martini, P. McDonald, A. Meisner, R. Miquel, J. Moon, J. Moustakas, A. Mu˜noz-Guti´errez, A. Myers, S. Nadathur, L. Napolitano, J. Newman, J. Nie, G. Niz, N. Palanque-Delabrouille, W. Percival, C. Poppett, F. Prada, A. Raichoor, C. Ravoux, M. Rezaie, A. Rosado-Marín, G. Rossi, L. Samushia, E. Sanchez, E. Schlafly, D. Schlegel, H. Seo, A. Smith, D. Sprayberry, G. Tarl´e, D. Valcin, M. Vargas-Maga˜na, B. Weaver, M. Wilson, J. Yu, P. Zarrouk, C. Zhao, R. Zhou, H. Zou   +86 more
semanticscholar   +1 more source

Inconsistencies and Lurking Pitfalls in the Magnitude–Frequency Distribution of High-Resolution Earthquake Catalogs

Seismological Research Letters, 2020
Earthquake catalogs describe the distribution of earthquakes in space, time, and magnitude, which is essential information for earthquake forecasting and the assessment of seismic hazard and risk.
M. Herrmann, W. Marzocchi
semanticscholar   +1 more source

Astrometric star catalogues as combination of Hipparcos/Tycho catalogues with ground-based observations [PDF]

Serbian Astronomical Journal, 2004
The successful ESA mission Hipparcos provided very precise parallaxes positions and proper motions of many stars in optical wavelength. Therefore it is a primary representation of International Celestial Reference System in this wavelength.
Vondrák J.
doaj   +1 more source

Two New Catalogs of Blazar Candidates in the WISE Infrared Sky [PDF]

Astrophysical Journal Supplement Series, 2019
We present two catalogs of radio-loud candidate blazars whose Wide-Field Infrared Survey Explorer (WISE) mid-infrared colors are selected to be consistent with the colors of confirmed γ-ray-emitting blazars. The first catalog is the improved and expanded
R. D’abrusco, N. Álvarez Crespo, F. Massaro, R. Campana, V. Chavushyan, M. Landoni, F. La Franca, N. Masetti, D. Milisavljevic, A. Paggi, F. Ricci, H. Smith   +11 more
semanticscholar   +1 more source

Crossmatching of high-proper motion L, T, and Y brown dwarfs with large photometric surveys

Open Astronomy, 2023
L, T, and Y brown dwarf (BD) exploration is a topical issue. First, the transition boundary between planets and BDs is not fully understood yet. Second, there is a phenomenon called the L/T-transition.
Avdeeva Aleksandra S., Karpov Sergey V., Malkov Oleg Yu.   +2 more
doaj   +1 more source

3D-HST WFC3-SELECTED PHOTOMETRIC CATALOGS IN THE FIVE CANDELS/3D-HST FIELDS: PHOTOMETRY, PHOTOMETRIC REDSHIFTS, AND STELLAR MASSES [PDF]

, 2014
The 3D-HST and CANDELS programs have provided WFC3 and ACS spectroscopy and photometry over ≈900 arcmin2 in five fields: AEGIS, COSMOS, GOODS-North, GOODS-South, and the UKIDSS UDS field.
R. Skelton, K. Whitaker, I. Momcheva, G. Brammer, P. V. van Dokkum, I. Labbé, M. Franx, A. van der Wel, R. Bezanson, E. da Cunha, M. Fumagalli, N. F. Förster Schreiber, M. Kriek, J. Leja, B. Lundgren, D. Magee, D. Marchesini, M. Maseda, E. Nelson, P. Oesch, C. Pacifici, S. Patel, S. Price, H. Rix, T. Tal, D. Wake, S. Wuyts   +26 more
semanticscholar   +1 more source

Milton, Anon e prosódia na "Trilogia dos Gigantes" [PDF]

Pessoa Plural, 2021
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 Future of Astrometry in Space

Frontiers in Astronomy and Space Sciences, 2018
This contribution focuses on the importance of astrometry and on its future developments. Over the centuries astrometry has greatly contributed to the advance of the knowledge of the Universe.
Antonella Vallenari
doaj   +1 more source

Russian Virtual Observatory: Data Sources

Open Astronomy, 2016
The purpose of this review is to analyze main directions of creation and functioning of major data sources developed by Russian astronomers or with their participation and to compare them with the worldwide trends in these fields. We discuss astronomical
Malkov O., Dluzhnevskaya O., Bakanas E., Kilpio E., Kniazev A., Kovaleva D., Mironov A., Pakhomov Yu., Ryabchikova T., Rykhlova L., Sachkov M., Sazonov S., Zhukov A.   +12 more
doaj   +1 more source