Results 21 to 30 of about 4,745,474 (343)

Variable Stars [PDF]

Nature, 1886
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openaire   +2 more sources

THE DETERMINATION OF PERIODS AND THE DEFINITION OF VARIABILITY TYPE OF NEW VARIABLE STAR IRAS 17583+5150

Odessa Astronomical Publications, 2017
The measurements of brightness of the star IRAS 17583+5150 discovered using the Odessa observatory negatives are discussed in the article. The proposed types of these stars are IRAS 17583+5150 -- type SRB (SRC).
A. P. Solonovich, I. S. Bryukhanov
doaj   +1 more source

Deep multi-survey classification of variable stars [PDF]

Monthly notices of the Royal Astronomical Society, 2018
During the last decade, a considerable amount of effort has been made to classify variable stars using different machine learning techniques. Typically, light curves are represented as vectors of statistical descriptors or features that are used to train
Carlos Aguirre, K. Pichara, I. Becker
semanticscholar   +1 more source

OBSERVATIONS OF VARIABLE STARS WITH SMALL TELESCOPES

Odessa Astronomical Publications, 2017
No ...
I. S. Bryukhanov
doaj   +1 more source

Outbursts of luminous blue variable stars from variations in the helium opacity [PDF]

Nature, 2018
Luminous blue variables are massive, evolved stars that exhibit large variations in luminosity and size on timescales from months to years, with high associated rates of mass loss1–5. In addition to this on-going variability, these stars exhibit outburst
Yan-Fei Jiang, M. Cantiello, L. Bildsten, E. Quataert, O. Blaes, J. Stone   +5 more
semanticscholar   +1 more source

Searches of the periods and variability type definition of new variable stars AL Ari, FM Leo, LL Aqr, V1125 Tau, V1366 Ori

Odessa Astronomical Publications, 2017
Measurements of brightness of stars 1AL Ari, FM Leo, LL Aqr, V1125 Tau, V1366 Ori opened in ”HIPPARCOS” experiment are carried out using negatives of the Odessa observatory.
A. P. Solonovich, I. V. Bryukhanov, A. S. Sernenyuta   +2 more
doaj   +1 more source

SEARCHES OF THE PERIODS AND DEFINITION OF VARIABILITY TYPES OF NEW VARIABLE STARS TX Crv, DP Cam, IRAS 17583+5150

Odessa Astronomical Publications, 2017
Measurements of brightness of stars TX Crv, DP Cam, IRAS 17583+5150 opened in "IRAS" and "HIPPARCOS" experiments are carried out using negatives of the Odessa observatory.
A. P. Solonovich, I. S. Bryukhanov, I. M. Sergey   +2 more
doaj   +1 more source

Gaia Data Release 2: Variable stars in the colour-absolute magnitude diagram [PDF]

, 2018
The ESA Gaia mission provides a unique time-domain survey for more than 1.6 billion sources with G ~ 21 mag. We showcase stellar variability across the Galactic colour-absolute magnitude diagram (CaMD), focusing on pulsating, eruptive, and cataclysmic ...
L. Eyer, L. Rimoldini, M. Audard, R. I. Anderson, K. Nienartowicz, F. Glass, O. Marchal, M. Grenon, N. Mowlavi, B. Holl, G. Clementini, C. Aerts, T. Mazeh, D. Evans, L. Szabados, A. Brown, A. Vallenari, T. Prusti, J. Bruijne, C. Babusiaux, C. Bailer-Jones, M. Biermann, F. Jansen, C. Jordi, S. Klioner, U. Lammers, L. Lindegren, X. Luri, F. Mignard, C. Panem, D. Pourbaix, S. Randich, P. Sartoretti, H. Siddiqui, C. Soubiran, F. V. Leeuwen, N. Walton, Frédéric Arenou, U. Bastian, M. Cropper, R. Drimmel, D. Katz, M. Lattanzi, J. Bakker, C. Cacciari, J. Castañeda, L. Chaoul, N. Cheek, F. Angeli, C. Fabricius, R. Guerra, E. Masana, R. Messineo, P. Panuzzo, J. Portell, M. Riello, G. Seabroke, P. Tanga, F. Thévenin, G. Gracia-Abril, G. Comoretto, M. Garcia-Reinaldos, D. Teyssier, M. Altmann, R. Andrae, I. Bellas-Velidis, K. Benson, J. Berthier, R. Blomme, P. Burgess, G. Busso, B. Carry, A. Cellino, M. Clotet, O. Creevey, M. Davidson, J. Ridder, L. Delchambre, A. Dell’Oro, C. Ducourant, J. Fernández-Hernández, M. Fouesneau, Y. Frémat, L. Galluccio, M. García-Torres, J. González-Núñez, J. J. González-Vidal, E. Gosset, L. Guy, J. Halbwachs, N. Hambly, D. Harrison, J. Hernández, D. Hestroffer, S. Hodgkin, A. Hutton, G. Jasniewicz, A. Jean-Antoine-Piccolo, S. Jordan, A. Korn, A. Krone-Martins, A. Lanzafame, T. Lebzelter, W. Löffler, M. Manteiga, P. Marrese, J. Martín-Fleitas, A. Moitinho, A. Mora, K. Muinonen, J. Osinde, E. Pancino, T. Pauwels, J. Petit, A. Recio-Blanco, P. J. Richards, A. Robin, L. Sarro, C. Siopis, M. Smith, A. Sozzetti, M. Süveges, J. Torra, W. V. Reeven, U. Abbas, A. Aramburu, S. Accart, G. Altavilla, M. A. Álvarez, R. Álvarez, J. Alves, A. Andrei, E. A. Varela, E. Antiche, T. Antoja   +134 more
semanticscholar   +1 more source

A recurrent neural network for classification of unevenly sampled variable stars [PDF]

Nature Astronomy, 2017
Astronomical surveys of celestial sources produce streams of noisy time series measuring flux versus time (‘light curves’). Unlike in many other physical domains, however, large (and source-specific) temporal gaps in data arise naturally due to ...
Brett Naul, J. Bloom, F. Pérez, S. J. van der Walt   +3 more
semanticscholar   +1 more source

THE INVESTIGATION OF THE CLASSICAL CEPHEID RT Aur PERIOD

Odessa Astronomical Publications, 2017
The outcomes of the research into RT Aur period for the last 93 years are given in the article. New elements of changes in RT Aur brightness have been determined by the authors: J.D.max=2447890,265+3.7283116*E.
A. S. Kosinsky, V. G. Tamello, I. J. Kushmar, I. S. Bryukhanov, A. S. Semenyuta, I. I. Balyuk   +5 more
doaj   +1 more source