Results 51 to 60 of about 5,382 (167)

Photometric Metallicity and Distance Estimates for ∼136,000 RR Lyrae Stars from Gaia Data Release 3

The Astrophysical Journal, 2023
We present a sample of 135,873 RR Lyrae stars (RRLs) with precise photometric metallicity and distance estimates from our newly calibrated P – ϕ _31 – R _21 –[Fe/H]/ P – R _21 –[Fe/H] and G -band absolute magnitude–metallicity relations.
Xin-Yi Li, Yang Huang, Gao-Chao Liu, Timothy C. Beers, Hua-Wei Zhang   +4 more
doaj   +1 more source

Wide-field variability survey of the globular cluster NGC 4833

, 2013
We present preliminary results of the variability survey in the field of the glo bular cluster NGC 4833. We observed all 34 variable stars known in the cluster.
Kopacki, Grzegorz
core   +1 more source

Variable Stars in the Cetus dSph Galaxy: Population Gradients and Connections with the Star Formation History [PDF]

, 2012
We investigate the variable star content of the isolated, Local Group, dwarf spheroidal galaxy (dSph) Cetus. Multi-epoch, wide-field images collected with the VLT/VIMOS camera allowed us to detect 638 variable stars (630 RR Lyrae stars and 8 Anomalous ...
A. Aparicio, Aparicio, Battaglia, Bellazzini, Bernard, Bernard, Bernard, Bono, Bono, C. Gallart, Cacciari, Cardelli, Casagrande, Cassisi, Castellani, Cignoni, Clement, Cole, Dall’Ora, Di Criscienzo, Di Criscienzo, Dolphin, E. D. Skillman, E. J. Bernard, Fiorentino, Fraternali, G. Bono, G. Fiorentino, Gallart, Gallart, Girardi, Gratton, Harbeck, Hidalgo, Hidalgo, Holtzman, Horne, I. Drozdovsky, Iben, Kunder, Lee, Lewis, M. Monelli, Marconi, McConnachie, Monelli, Monelli, Monelli, Monelli, Monelli, Noël, Noël, P. B. Stetson, S. Cassisi, Sandage, Soszyński, Soszyński, Stetson, Stetson, Stinson, Tolstoy, van den Bergh   +61 more
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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

Search of Short-Period Pulsating Variables(I) [PDF]

Journal of Astronomy and Space Sciences, 1996
CCD differential photometry was carried out for seven stars in the "New Catalogue of Suspected Variable Stars" in order to discover new short-period pulsating variables such as low and high amplitude δ Scuti stars and RR Lyrae stars.
Chulhee Kim, Nam-Kyu Park
doaj  

Highlights on eclipsing binary variables from Araucaria Project

EPJ Web of Conferences, 2015
The Araucaria Project, which main goal is to provide precise determination of the cosmic distance scale, has recently made a set of discoveries involving variable stars in binary systems. Among these discoveries we highlight three: 1% precise measurement
Karczmarek Paulina, Pietrzyński Grzegorz, Gieren Wolfgang, Pilecki Bogumił, Graczyk Dariusz, Thompson Ian, Górski Marek, Konorski Piotr, Suchomska Ksenia, Nardetto Nicholas, Smolec Radoslaw   +10 more
doaj   +1 more source

Relationship between the Elemental Abundances and the Kinematics of Galactic-Field RR Lyrae Stars

, 2017
Data of our compiled catalog containing the positions, velocities, and metallicities of 415 RR~Lyrae variable stars and the relative abundances [el/Fe] of 12~elements for 101 RR~Lyrae stars, including four $\alpha$~elements (Mg, Ca, Si, and Ti), are used
Gozha, M. L., Koval', V. V., Marsakov, V. A.   +2 more
core   +1 more source

A Preliminary Discussion of the Kinematics of BHB and RR Lyrae Stars near the North Galactic Pole [PDF]

, 1996
The radial velocity dispersion of 67 RR Lyrae variable and blue horizontal branch (BHB) stars that are more than 4 kpc above the galactic plane at the North Galactic Pole is 110 km/sec and shows no trend with Z (the height above the galactic plane). Nine
Hanson, Robert B., Harmer, D. L., Kinman, T. D., Klemola, A. R., Kraft, Robert P., Pier, Jeffrey R., Suntzeff, Nicholas B., Valdes, F.   +7 more
core   +2 more sources

Pulsating stars in the VMC survey

EPJ Web of Conferences, 2017
The VISTA survey of the Magellanic Clouds system (VMC) began observations in 2009 and since then, it has collected multi-epoch data at Ks and in addition multi-band data in Y and J for a wide range of stellar populations across the Magellanic system ...
Cioni Maria-Rosa L., Ripepi Vincenzo, Clementini Gisella, Groenewegen Martin A.T., Moretti Maria I., Muraveva Tatiana, Subramanian Smitha   +6 more
doaj   +1 more source

Serendipitous discovery of RR Lyrae stars in the Leo V ultra-faint galaxy

, 2017
During the analysis of RR Lyrae stars discovered in the High cadence Transient Survey (HiTS) taken with the Dark Energy Camera at the 4-m telescope at Cerro Tololo Inter-American Observatory, we found a group of three very distant, fundamental mode ...
Carlin, Jeffrey L., de Jaeger, Thomas, Förster, Francisco, Galbany, Lluis, González-Gaitán, Santiago, Hamuy, Mario, Martinez, Jorge, Martín, Jaime San, Maureira, Juan Carlos, Medina, Gustavo E., Muñoz, Ricardo R., Vivas, A. Katherina   +11 more
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