Results 21 to 30 of about 12,020 (316)

The Onset of Chaos in Pulsating Variable Stars [PDF]

Odessa Astronomical Publications, 2011
To appear in the proceedings of the Odessa Variable Stars 2010 Conference (see http://uavso.org.ua/?page=vs2010&lang=en), edited by I.
D. G. Turner, Л. Н. Бердников, John R. Percy, Mohamed Abdel‐Sabour Abdel‐Latif   +3 more
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A statistical study of pulsating stars. First paper The variable stars in a Centauri

Communications, Faculty Of Science, University of Ankara Series A1Mathematics and Statistics, 1956
A large number of the variables in w Çent, has been analysed by the autocorrelation and subsequent power series method. In th a t way the intensities of the fundam ental and of the various overtones are ob- tained. Subject of th is study is especially the relative in ten sity A(2) of the first overtone.
E. A. Kreiken
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MULTI-COMPONENT VARIABILITY OF PULSATING VARIABLE STARS OF RV TAURI TYPE

Odessa Astronomical Publications, 2020
For the group of pulsating variable stars with multi-component variability – which are currently classified as the RV Tau-type stars – the classification based on complexity of the periodograms is discussed.
L. S. Kudashkina
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Pulsating variable stars as tracers of galactic structure and interaction mechanisms [PDF]

, 2012
My PhD project has been focused on the study of the pulsating variable stars in two ultra-faint dwarf spheroidal satellites of the Milky Way, namely, Leo IV and Hercules; and in two fields of the Large Magellanic Cloud (namely, the Gaia South Ecliptic Pole calibration field, and the 30 Doradus region) that were repeatedly observed in the KS band by ...
M. I. Moretti
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Pulsating stars -- plethora of variables and observational tasks [PDF]

, 2014
Developments of this far-reaching research field are summarized from an observational point of view, mentioning important and interesting phenomena discovered recently by photometry of stellar oscillations of any kind. A special emphasis is laid on Cepheids and RR Lyrae type variables.
L. Szabados
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Pulsating Variable Stars in the MACHO Bulge database: The Semiregular Variables [PDF]

, 1997
We review the pulsating stars contained in the top 24 fields of the MACHO bulge database, with special emphasis on the red semiregular stars. Based on period, amplitude and color cuts, we have selected a sample of 2000 semiregular variables with ...
D. Minniti, C. Alcock, R. A. Allsman, Alves, D. R., Axelrod, T. S., Becker, A., Bennett, D. P., Cook, K. H., Freeman, K. C., Griest, K., Marshall, S. L., Peterson, B. A., Pratt, M. R., Quinn, P. J., Rodgers, A. W., Stubbs, C. W., Sutherland, W., Tomaney, A., Vandehei, T., Welch, D. L.   +19 more
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Pulsation models for the 0.26 M⊙ star mimicking RR Lyrae pulsator. Model survey for the new class of variable stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
We present non-linear hydrodynamic pulsation models for OGLE-BLG-RRLYR-02792 - a 0.26M_sun pulsator, component of the eclipsing binary system, analysed recently by Pietrzynski et al. The star's light and radial velocity curves mimic that of classical RR Lyrae stars, except for the bump in the middle of the ascending branch of the radial velocity curve.
R. Smolec, G. Pietrzyński, D. Graczyk, B. Pilecki, W. Gieren, I. B. Thompson, K. Stȩpień, P. Karczmarek, P. Konorski, Marek Górski, K. Suchomska, G. Bono, P. G. Moroni Prada, N. Nardetto   +13 more
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Observational Properties of 155 O- and B-type Massive Pulsating Stars

The Astrophysical Journal Supplement Series, 2023
O- and B-type (OB-type) pulsating stars are important objects for studying the structure and evolution of massive stars through asteroseismology. A large amount of data from various sky surveys provides an unprecedented opportunity to search for and ...
Xiang-dong Shi, Sheng-bang Qian, Li-ying Zhu, Liang Liu, Lin-jia Li, Lei Zang   +5 more
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Variability and pulsations in the Be star 66 Ophiuchi [PDF]

Astronomy & Astrophysics, 2002
Oph is a Be star seen under a moderate inclination angle that shows strong variability from UV to IR wavelengths. A concise review of long-term variability history is given. High resolution, high S /N spectroscopic observations obtained in 1997, 1998 and 2001 and spectropolarimetric observations obtained in 2000 are presented.
Floquet, M., Neiner, C., Janot-Pacheco, E., Hubert, A.M., Jankov, S., Zorec, J., Briot, D., Chauville, J., Leister, N.V., Percy, J.R., Ballerau, D., Bakos, A.G.   +11 more
openaire   +4 more sources

Investigating Stellar Variability in the Open Cluster Region NGC 381

The Astronomical Journal, 2023
We study variable stars in the field of the open cluster NGC 381 using photometric data observed over 27 nights and identify a total of 57 variable stars, six of which are member stars. The variable stars are classified based on their periods, amplitudes,
Jayanand Maurya, Y. C. Joshi, A. Panchal, A. S. Gour   +3 more
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