Results 41 to 50 of about 267 (119)

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

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

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

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

A Search for Rapid Variables and RR Lyrae Stars in the LMC on ESO Schmidt Plates [PDF]

, 1975
E. H. Geyer
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Stellar Pulsation and Evolution: A Combined Theoretical Renewal and Updated Models (SPECTRUM). I. Updating Radiative Opacities for Pulsation Models of Classical Cepheid and RR-Lyrae

The Astrophysical Journal
Pulsating stars are universally recognized as precise distance indicators and tracers of stellar populations. Their variability, combined with well-defined relationships between pulsation properties and intrinsic evolutionary parameters such as ...
Giulia De Somma, Marcella Marconi, Santi Cassisi, Roberto Molinaro   +3 more
doaj   +1 more source

Variable Stars in Leo A: RR Lyrae Stars, Short-Period Cepheids, and Implications for Stellar Content [PDF]

, 2002
Andrew E. Dolphin, Abhijit Saha, J. Claver, Evan D. Skillman, Andrew A. Cole, J. S. Gallagher, Eline Tolstoy, R. C. Dohm‐Palmer, Mario Mateo   +8 more
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Caught in the Act: Observations of the Double-mode RR Lyrae V338 Boo during the Disappearance of a Pulsation Mode

The Astrophysical Journal
New results on the behavior of the double-mode RR Lyrae V338 Boo are presented. The Transiting Exoplanet Survey Satellite (TESS) observed this star again in 2022, and an observing campaign of the American Association of Variable Star Observers (AAVSO ...
Kenneth Carrell, Ronald Wilhelm, Andrew Tom, Horace Smith, Adam Popowicz, Gary Hug, Stephen M. Brincat, Fabio Salvaggio, Keith Nakonechny, Darrell Lee, Teófilo Arranz Heras, Tony Vale, Davide Mortari, André Steenkamp, Ralph Rogge, Jacek Checinski   +15 more
doaj   +1 more source

San Pedro meeting on Wide Field Variability Surveys: Some concluding comments

EPJ Web of Conferences, 2017
This is a written version of the closing talk at the 22nd Los Alamos Stellar pulsation conference on wide field variability surveys. It comments on some of the issues which arise from the meeting.
Feast Michael W.
doaj   +1 more source

RR Lyrae Variable Stars and the Distance Scale [PDF]

, 1978
S. V. M. Clube, J. A. Dawe
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