Results 91 to 100 of about 5,541 (198)

Classification for 969 Double-mode RR Lyrae Stars from Zwicky Transient Facility

The Astrophysical Journal Supplement Series
RR Lyrae (RRL) variable stars are cornerstone distance indicators. In particular, double-mode RR Lyrae (RRd) stars enable period–luminosity relations (PLRs) that are less sensitive to metallicity, reducing systematic biases in distance measurements ...
Jianxing Zhang, Xiaodian Chen, Shu Wang, Jiyu Wang, Licai Deng   +4 more
doaj   +1 more source

RR Lyrae stars - A theoretical study of Bailey type C variables

The Astrophysical Journal, 1986
New theoretical models of stars pulsating in the first overtone have been constructed to simulate RR Lyr variables of Bailey type c. Despite the use of different opacities, these new models agree very well with earlier models built by Christy and Stellingwerf.
Olenka Hubickyj, Richard B. Stothers
openaire   +1 more source

The OGLE Collection of Variable Stars. Over 45 000 RR Lyrae Stars in the\n Magellanic System [PDF]

, 2016
I. Soszyński, A. Udalski, M. K. Szymański, Ł. Wyrzykowski, K. Ulaczyk, R. Poleski, P. Pietrukowicz, S. Kozłowski, D. M. Skowron, J. Skowron, P. Mróz, M. Pawlak   +11 more
openalex   +2 more sources

Variable Stars in Sagittarius Globular Clusters I. Arp~2

, 2019
We present new photometry and analysis of the twelve variable stars (nine RR Lyrae, three SX Phoenicis) belonging to the Sagittarius globular cluster Arp 2. Of the nine RR Lyrae stars in the cluster, eight are RRab and one is RRc. From the RRab stars, we
Borissova, Jura, Catelan, Márcio, Gehrman, Thomas C., Pritzl, Barton J., Salinas, Ricardo, Smith, Horace A.   +5 more
core   +1 more source

Photometric Metallicity and Distance Estimates for ∼70,000 RR Lyrae Stars from the Zwicky Transient Facility

The Astrophysical Journal Supplement Series
Utilizing Zwicky Transient Facility (ZTF) data and existing RR Lyrae stars (RRLs) catalogs, this study achieves the first calibration of the P − ϕ _31 − R _21 − [Fe/H] and P − ϕ _31 − A _2 − A _1 − [Fe/H] relations in the ZTF photometric system for RRab ...
Shun-Xuan He, Yang Huang, Xin-Yi Li, Hua-Wei Zhang, Gao-Chao Liu, Timothy C. Beers, Hong Wu, Zhou Fan   +7 more
doaj   +1 more source

The Privileged Life of a Theoretical Observer. [PDF]

Sol Phys, 2022
Gough D.
europepmc   +1 more source

The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. IX. RR Lyrae Stars in the Small Magellanic Cloud [PDF]

, 2010
I. Soszyński, A. Udalski, M. K. Szymański, M. Kubiak, G. Pietrzyński, Ł. Wyrzykowski, K. Ulaczyk, R. Poleski   +7 more
openalex   +1 more source

The properties of RR Lyrae variable stars in the Local Group dwarf galaxy LGS-3 [PDF]

, 2023
Ata Sarajedini
openalex   +1 more source

Stellar Variability and Distance Indicators in the Near-infrared in Nearby Galaxies. I. RR Lyrae and Anomalous Cepheids in Draco Dwarf Spheroidal

The Astronomical Journal
The Draco Dwarf spheroidal (dSph) galaxy is one of the nearest and the most dark-matter-dominated satellites of the Milky Way. We obtained multiepoch near-infrared (NIR, JHK _s ) observations of the central region of Draco dSph covering a sky area of ∼21′
Anupam Bhardwaj, Marina Rejkuba, Chow-Choong Ngeow, Marcella Marconi, Vincenzo Ripepi, Abhinna Sundar Samantaray, Harinder P. Singh   +6 more
doaj   +1 more source

Analysing periodic amplitude changes in RR Lyrae and other types of variable stars [PDF]

, 2008
E. Guggenberger, K. Kolenberg, M. Breger
openalex   +1 more source