Results 51 to 60 of about 995 (187)
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 +10 more
doaj +1 more source
On the Use of Field RR Lyrae as Galactic Probes. V. Optical and Radial Velocity Curve Templates
The Astrophysical Journal, 2021 We collected the largest spectroscopic catalog of RR Lyrae (RRLs) including ≈20,000 high-, medium-, and low-resolution spectra for ≈10,000 RRLs. We provide the analytical forms of radial velocity curve (RVC) templates.
V. F. Braga +31 more
doaj +1 more source
The Absolute Luminosity of RR Lyrae Variables [PDF]
Symposium - International Astronomical Union, 1988 We have taken UBVRI photoelectric photometry and CORAVEL radial velocities for 6 field RR Lyraes, i.e. SW And, YZ Cap, SW Dra, SS For, RV Phe and V440 Sgr, with the purpose of applying the Baade-Wesselink (B-W) method and determining their absolute magnitudes.
C. Cacciari, G. Clementini, L. Prevot
openaire +1 more source
Metal‐rich RR Lyrae Variables. II. The Pulsational Scenario [PDF]
The Astrophysical Journal, 1997 21 pages, 19 ps figures, 5 ps tables, uses aaspp4.sty and tighten.sty, accepted for publication in ...
Santi Cassisi +4 more
openaire +3 more sources
Discovery of RR Lyrae in the Ultra-faint-dwarf Galaxy Virgo III
The Astronomical JournalVirgo III is a newly discovered ultra-faint-dwarf (UFD) candidate, and finding RR Lyrae associated with this galaxy is important to constrain its distance.
Chow-Choong Ngeow, Anupam Bhardwaj
doaj +1 more source
The Astronomical Journal, 2023 Noting the weakest modulation and relatively high metal abundance of the ab-type RR Lyrae star V838 Cyg, we collected the photometric data of this star from several sky surveys to carry out an in-depth analysis. The O − C diagram shows that the pulsation
L.-J. Li +3 more
doaj +1 more source
The GFCAT: A Catalog of Ultraviolet Variables Observed by GALEX with Subminute Resolution
The Astrophysical Journal Supplement Series, 2023 We have performed the first systematic search of the full Galaxy Evolution Explorer (GALEX) data archive for astrophysical variability on timescales of seconds to minutes by rebinning data across the whole mission to 30 s time resolution.
Chase C. Million +4 more
doaj +1 more source
RR Lyrae and Type II Cepheid Variables in Globular Clusters: Optical and Infrared Properties [PDF]
, 2022 Anupam Bhardwaj
openalex +1 more source
RR Lyrae Variables in the Crater II Dwarf Galaxy [PDF]
The Astrophysical Journal, 2018 Abstract We report the detection of RR Lyrae variable stars in Crater II, a recently discovered large and diffuse satellite dwarf galaxy of the Milky Way (MW). Based on B, V time-series photometry obtained with the Korea Microlensing Telescope Network 1.6 m telescope at Cerro Tololo Inter-American Observatory, we identified 83 ab-type ...
Seok-Joo Joo +12 more
openaire +3 more sources
A Search of Periodic Variable Stars in the LMC by JWST Photometry
The Astrophysical Journal Supplement SeriesBased on high-resolution near-infrared photometric data from the James Webb Space Telescope (JWST) targeting the Large Magellanic Cloud, this study attempts to evaluate the feasibility and sensitivity limits of variable star detection in crowded stellar ...
Jiyu Wang +5 more
doaj +1 more source