Results 11 to 20 of about 501 (275)

THE ONSET OF CHAOS IN PULSATING VARIABLE STARS

Odessa Astronomical Publications, 2010
Random changes in pulsation period occur in cool pulsating Mira variables, Type A, B, and C semiregular variables, RV Tauri variables, and in most classical Cepheids.
D. G. Turner, L. N. Berdnikov, J. R. Percy, M. Abdel-Sabour Abdel-Latif   +3 more
doaj   +3 more sources

Little Bear's Pulsating Stars: Variable Star Census of dSph UMi Galaxy [PDF]

, 2017
Recent observations and a photometric search for variable stars in the Ursa Minor dwarf spheroidal galaxy (UMi dSph) are presented. Our observations were taken at Apache Point Observatory in 2014 and 2016 using the 0.5m ARCSAT telescope and the West Mountain Observatory 0.9m telescope of Brigham Young University in 2016. Previously known RR Lyrae stars
Karen Kinemuchi, Elizabeth Jeffery, Charles A. Kuehn, Kathleen Grabowski, J. M. Nemec   +4 more
openalex   +3 more sources

PULSATING VARIABLE STARS IN THE COMA BERENICES DWARF SPHEROIDAL GALAXY [PDF]

The Astrophysical Journal, 2009
14 pages, 3 figures, Accepted for publication in ...
I. Musella, V. Ripepi, G. Clementini, M. Dall’Ora, Karen Kinemuchi, Luca Di Fabrizio, Claudia Greco, M. Marconi, H. A. Smith, M. Radovich, Timothy C. Beers   +10 more
openalex   +4 more sources

Pulsating variable stars in the Magellanic Clouds [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractPulsating variable stars can be powerful tools to study the structure, formation and evolution of galaxies. I discuss the role that the Magellanic Clouds' pulsating variables play in our understanding of the whole Magellanic System, in light of results on pulsating variables produced by extensive observing campaigns like the MACHO and OGLE ...
Gisella Clementini
openalex   +3 more sources

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
  +6 more sources

Little Bear’s pulsating stars: Variable star census of UMi dSph Galaxy [PDF]

EPJ Web of Conferences, 2017
Recent observations and a photometric search for variable stars in the Ursa Minor dwarf spheroidal galaxy (UMi dSph) are presented. Our observations were taken at Apache Point Observatory in 2014 and 2016 using the 0.5m ARCSAT telescope and the West Mountain Observatory (WMO) 0.9m telescope of Brigham Young University in 2016. Previously known RR Lyrae
Karen Kinemuchi, Elizabeth Jeffery, Charles A. Kuehn, Kathleen Grabowski, J. M. Nemec   +4 more
openalex   +3 more sources

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
openalex   +6 more sources

Pulsating and variable stars in the young open star cluster NGC 6231

, 2012
Diese Arbeit befasst sich mit den veränderlichen und im speziellen mit pulsierenden Sternen in NGC 6231, also Sternen die ü̈ber typische Zeiträume ihre Form und auch physikalischen Eigenschaften ändern. Obwohl sich schon einige Studien in den letzten 30 Jahren mit diesem Thema beschäftigt haben, fehlt immer noch ein vollständiges Bild von Pulsatoren in
Stefan Meingast
openalex   +2 more sources

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
doaj   +1 more source

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
doaj   +1 more source