Results 1 to 10 of about 2,822 (109)

Modulation of the Blazhko Cycle in LS Her

The Astronomical Journal, 2023
We present analysis of the RR Lyrae star, LS Her, and confirm the previously reported modulation to its Blazhko cycles. We performed Fourier analysis on two sectors (Sector 24 and 25) of data from the Transiting Exoplanet Survey Satellite (TESS) spanning
Ronald Wilhelm, Kenneth Carrell, Hannah H. Means, Adam Popowicz, Krzysztof Bernacki, Mariusz Frąckiewicz, Marek Szczepański, Adam Dustor, Jaylon Lockett, Jill Taylor, Stasha Youngquist   +10 more
doaj   +1 more source

Study of the Blazhko Type RRc stars in the Stripe 82 Region Using SDSS and ZTF

The Astronomical Journal, 2023
RR Lyrae stars (RRLs) are pulsating stars, many of which also show a long-term variation called the Blazhko effect which is a modulation of amplitude and phase of the lightcurve.
Vaidehi Varma, József M. Benkő, Chow-Choong Ngeow   +2 more
doaj   +1 more source

Sparse Logistic Regression for RR Lyrae versus Binaries Classification

The Astrophysical Journal, 2023
RR Lyrae (RRL) stars are old, low-mass, radially pulsating variable stars in their core helium burning phase. They are popular stellar tracers and primary distance indicators since they obey well-defined period–luminosity relations in the near-infrared ...
Piero Trevisan, Mario Pasquato, Gaia Carenini, Nicolas Mekhaël, Vittorio F. Braga, Giuseppe Bono, Mohamad Abbas   +6 more
doaj   +1 more source

Study of the variable star ASASSN-V j104912.47+274312.7; a rare peculiar RRc star

, 2023
During a screening in ASAS-SN database searching candidates of Delta Scuti stars with short period, our attention was drawn to the variable star ASASSN-V J104912.47+274312.7, we considered interesting to follow. It is an ASAS-SN discovery, classified by them as a RRc.
Correa, M., Vilalta, J. M., Borgne, J. F. Le   +2 more
openaire   +2 more sources

The ACS LCID Project. I. Short-Period Variables in the Isolated Dwarf Spheroidal Galaxies Cetus & Tucana [PDF]

, 2009
(abridged) We present the first study of the variable star populations in the isolated dwarf spheroidal galaxies (dSph) Cetus and Tucana. Based on Hubble Space Telescope images obtained with the Advanced Camera for Surveys in the F475W and F814W bands ...
Andrew A. Cole, Antonio Aparicio, Bernard, Bernard, Bersier, Bono, Bono, Carme Gallart, Castellani, Clement, Clementini, Clementini, Clementini, Cole, Corwin, Corwin, Corwin, Dall'Ora, Dall'Ora, Di Criscienzo, Dolphin, Edouard J. Bernard, Eline Tolstoy, Evan D. Skillman, Gallart, Greco, Grevesse, Harbeck, Harris, Held, Igor Drozdovsky, Kaluzny, Kinemuchi, Kovacs, Kuehn, Lavery, Lavery, Layden, Lee, Lucio Mayer, Mack, Matteo Monelli, Mighell, Musella, Muñoz, Oosterhoff, Peter B. Stetson, Petroni, Pietrinferni, Popielski, Pritzl, Salaris, Santi Cassisi, Sarajedini, Saviane, Schlegel, Sebastian L. Hidalgo, Siegel, Siegel, Smith, Tammann, Turner, Udalski, Whiting   +63 more
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HISTOGRAMS OF PERIODS DISTRIBUTION AND MODE IDENTIFICATIONS OF RRc LYR STARS

Odessa Astronomical Publications, 2017
On the base of GCVS (General Catalogue of Variable Stars) sampling (381 stars with the known periods) has been carried out the analysis of periods of RRc Lyr stars.
V. P. Bezdenezhnyi
doaj   +1 more source

The Chemical Compositions Of RR Lyrae Type C Variable Stars [PDF]

, 2014
We present a detailed chemical abundance study of eight RR Lyrae variable stars of subclass c (RRc). The target RRc stars chosen for study exhibit "Blazhko-effect" period and amplitude modulations to their pulsational cycles.
Gomez, Thomas, Govea, Jose, Preston, George W., Sneden, Christopher   +3 more
core   +1 more source

Kepler photometry of RRc stars: peculiar double-mode pulsations and period doubling [PDF]

, 2014
We present the analysis of four first overtone RR Lyrae stars observed with the Kepler space telescope, based on data obtained over nearly 2.5 yr. All four stars are found to be multiperiodic.
Bailey, Benkő, Benkő, Benkő, Berdnikov, Bergé, Blazhko, Borucki, Bowman, Brown, Buchler, Buchler, C.-C. Ngeow, Caldwell, Chadid, D. W. Kurtz, Derekas, Dziembowski, Dziembowski, Dziembowski, E. Guggenberger, G. Kopacki, Gilliland, Gruberbauer, Guggenberger, Haas, Howell, J. M. Benkő, J. M. Nemec, Jenkins, Jenkins, Jurcsik, Jurcsik, Jurcsik, K. Kolenberg, Koch, Kolenberg, Kolenberg, Kolenberg, Kolláth, Kolláth, Kovács, Kovács, Kovács, L. Molnár, Le Borgne, Lub, M. Chadid, Mizerski, Molnár, Molnár, Morgan, Moskalik, Moskalik, Moskalik, Moskalik, Moskalik, Moskalik, Nagy, Nemec, Nemec, Netzel, Olech, Olech, P. Moskalik, Payne-Gaposchkin, Pigulski, Popielski, R. Smolec, R. Szabó, Rappaport, S. M. Kanbur, Simon, Smolec, Smolec, Smolec, Smolec, Smolec, Soszyński, Soszyński, Soszyński, Soszyński, Soszyński, Szabó, Szabó, Szabó, Süveges, Tsesevich, Van Hoolst, Walker, Y.-B. Jeon   +90 more
core   +3 more sources

Fourier decomposition and frequency analysis of the pulsating stars with $\vec{P< }$ 1 d in the OGLE database [PDF]

Astronomy & Astrophysics, 2001
12 pages (in A&A style), 14 eps figures. Accepted for A&A Main Journal. Table 3, 4 and 5 are also included as ascii files.
openaire   +2 more sources

Search for Variable Stars in the Globular Cluster M3 [PDF]

, 1997
We describe here results of a photometric time-sequence survey of the globular cluster M3 (NGC 5272), in a search for contact and detached eclipsing binary stars.
Clement, C., Hilditch, R. W., Kaluzny, J., Rucinski, S. M.   +3 more
core   +2 more sources