Results 41 to 50 of about 23,538 (190)

RR Lyrae binary systems in the Galactic bulge

EPJ Web of Conferences, 2017
The possibility of a direct mass measurement of RR Lyrae variable stars in binary systems has remained elusive for many years, due to the apparent paucity of such systems.
Hajdu Gergely, Catelan Márcio
doaj   +1 more source

Galactic Bulge Hypervelocity (HVS) RR Lyrae Variable Stars and One High Galactic Latitude HVS HB Star

Research Notes of the AAS
Six Galactic Bulge Hypervelocity (HVS) RR Lyrae stars and one high galactic latitude HVS Horizontal Branch (HB) star found from the ongoing search for HVS in the Gaia DR3 and SIMBAD data are presented.
Mudumba Parthasarathy
semanticscholar   +1 more source

Three dimensional maps of the Magellanic Clouds using RR Lyrae Stars and Cepheids II. The Small Magellanic Cloud [PDF]

, 2012
We use data on variable stars from the Optical Gravitational Lensing Experiment (OGLE III) survey to determine the three-dimensional structure of the Small Magellanic Cloud (SMC).
Duffau, Sonia, Grebel, Eva K., Haschke, Raoul   +2 more
core   +1 more source

RR Lyrae Variables in the Local Group Dwarf Galaxy NGC 147

, 2009
We investigate the RR Lyrae population in NGC 147, a dwarf satellite galaxy of M31 (Andromeda). We used both Thuan-Gunn g-band ground-based photometry from the literature and Hubble Space Telescope Wide Field Planetary Camera 2 archival data in the F555W
Ata Sarajedini, Bender, Chaboyer, Grebel, Kunder, Layden, Layden, Mancone, S-C. Yang, Sarajedini, Schlegel, Smith   +11 more
core   +1 more source

RR Lyrae Variable Stars: Pulsational Constraints Relevant to the Oosterhoff Controversy [PDF]

, 1995
A solution to the old Oosterhoff controversy is proposed on the basis of a new theoretical pulsational scenario concerning RR Lyrae cluster variables (Bono and coworkers).
G. Bono, F. Caputo, V. Castellani, M. Marconi   +3 more
semanticscholar   +1 more source

Multicolour CCD photometry of the variable stars in globular cluster M3 [PDF]

, 2006
We present time series data on the variable stars of the galactic globular cluster Messier 3 (M3). We give BVI light curves for 226 RR Lyrae, 2 SX Phe and 1 W Vir type variables, along with estimated fundamental photometric parameters such as intensity ...
Akerlof, Alard, Alard, Alcock, Alcock, Arellano Ferro, Bailey, Bakos, Bakos, Benkő, Benkő, Blazhko, Buchler, Cacciari, Carretta, Castellani, Castellani, Catelan, Catelan, Clement, Clement, Clement, Clement, Clement, Clementini, Corwin, Corwin, Cudworth, Dziembowski, G. Á. Bakos, Greenstein, Guhathakurta, Hartman, J. M. Benkő, J. Nuspl, Jerzykiewicz, Jurcsik, Jurcsik, Jurcsik, Jurcsik, Kaluzny, Kolláth, Kukarkin, Kukarkin, Larink, Layden, Mallik, Marconi, Moskalik, Murtagh, Müller, Nemec, Oaster, Olech, Olech, Olech, Oosterhoff, Panov, Press, Pritzl, Purdue, Roberts, Rood, Schechter, Smith, Soszyński, Stellingwerf, Stetson, Stetson, Strader, Szabó, Szeidl, Szeidl, Tucholke, Uglesich, Van Albada, Walker, Welty   +77 more
core   +2 more sources

Progress report on the K2 RR Lyrae survey

EPJ Web of Conferences, 2017
We have initiated a large survey with K2, to observe thousands of RR Lyrae stars along the ecliptic. The high photometric precision and the 70-90-day continuous coverage will allow us to investigate the light variation of these galactic structure tracer ...
Szabó Róbert
doaj   +1 more source

Bulge RR Lyrae stars in the VVV tile $\textit{b201}$

, 2015
The VISTA Variables in the V\'ia L\'actea (VVV) Survey is one of the six ESO public surveys currently ongoing at the VISTA telescope on Cerro Paranal, Chile. VVV uses near-IR ($ZYJHK_{\rm s}$) filters that at present provide photometry to a depth of $K_{\
Catelan, M., Dékány, I., Gran, F., McDonald, I., Minniti, D., Navarrete, C., Ramos, R. Contreras, Saito, R. K.   +7 more
core   +1 more source

The double-mode RR Lyrae variable BS Com [PDF]

, 2007
We present the frequency analysis of the multicolour time series photometry of the field RRd variable BS Comae. The large number of data points in each of the BV(RI)_c bands and the ~0.01 magnitude accuracy of the individual measurements allow us a high ...
I. Dékány
semanticscholar   +1 more source

Optical and Near-Infrared UBVRIJHK Photometry for the RR Lyrae stars in the Nearby Globular Cluster M4 (NGC 6121)

, 2014
We present optical and near-infrared UBVRIJHK photometry of stars in the Galactic globular cluster M4 (NGC 6121) based upon a large corpus of observations obtained mainly from public astronomical archives. We concentrate on the RR Lyrae variable stars in
Bono, G., Braga, V. F., Buonanno, R., Dall'Ora, M., Ferraro, I., Iannicola, G., Marengo, M., Neeley, J., Stetson, P. B.   +8 more
core   +1 more source