Results 41 to 50 of about 179 (144)

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

Evidence for an Overluminosity of the Variable Star RR Lyrae, and a Revised Distance to the LMC [PDF]

The Astrophysical Journal, 2008
4 pages, 4 figures (emulateapj format).
Catelan, M., Cortes, C.
openaire   +9 more sources

A Search of Periodic Variable Stars in the LMC by JWST Photometry

The Astrophysical Journal Supplement Series
Based 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, Xiaodian Chen, Jianxing Zhang, Ziming Yan, Shu Wang, Licai Deng   +5 more
doaj   +1 more source

Pulsation Properties of Blazhko and Non-Blazhko RRab Stars

The Astrophysical Journal Supplement Series
In this study, we conduct a comparative analysis of the properties of Blazhko and non-Blazhko RRab stars. We identified 1054 non-Blazhko and 785 Blazhko RRab stars in the photometric data observed by the K2 mission, which, combined with those 37 stars ...
Peng Zong, Jian-Ning Fu, Jie Su, Bing-Kai Zhang, Gao-Chao Liu, Weichao Sun, Jiaxin Wang, Bo Zhang, Xueying Hu, Zhongrui Bai, Weikai Zong   +10 more
doaj   +1 more source

RR Lyrae Variable Stars in the CCD/Transit Instrument Survey

The Astronomical Journal, 1996
Abstract : RR Lyrae variable stars have long been recognized as important tools in probing the mass, chemical distribution and kinematics of the Galaxy from the inner recesses of the nuclear bulge to the outer environs of the distant Galactic halo. This dissertation chronicles an RR Lyrae variable star survey from a thorough description of the initial ...
Charles J. Wetterer, John T. McGraw, Thomas R. Hess, Randy Grashuis   +3 more
openaire   +1 more source

The RR Lyrae Luminosity Metallicity Relation Revisited

The Astronomical Journal
We utilize a set of internally consistent absolute ages for a sample of ten Galactic globular clusters to determine the variation of the slope with the zero point of the M _V (RR) ∼ [Fe/H] relation for RR Lyrae variables.
Ata Sarajedini
doaj   +1 more source

Precise Empirical Determination of Metallicity Dependence of Near-infrared Period–Luminosity Relations for RR Lyrae Variables

The Astrophysical Journal Letters, 2023
RR Lyrae variables are excellent Population II distance indicators thanks to their well-defined period–luminosity relations (PLRs) at infrared wavelengths.
Anupam Bhardwaj, Marcella Marconi, Marina Rejkuba, Richard de Grijs, Harinder P. Singh, Vittorio F. Braga, Shashi Kanbur, Chow-Choong Ngeow, Vincenzo Ripepi, Giuseppe Bono, Giulia De Somma, Massimo Dall’Ora   +11 more
doaj   +1 more source

Asteroseismological Analysis of the Non-Blazhko RRab Star EPIC 248846335 in the LAMOST–Kepler/K2 Project

The Astronomical Journal
We conduct an asteroseismological analysis on the non-Blazhko ab-type RR Lyrae star EPIC 248846335, employing the Radial Stellar Pulsations module of the Modules for Experiments in Stellar Astrophysics based on the set of stellar parameters.
Peng Zong, Jian-Ning Fu, Jie Su, Xueying Hu, Bo Zhang, Jiaxin Wang, Gao-Chao Liu, Gang Meng, Gianni Catanzaro, Antonio Frasca, Haotian Wang, Weikai Zong   +11 more
doaj   +1 more source

Two Different Weak Modulations in ab-type RR Lyrae Variable V838 Cyg, and Potential Influence of Metal Abundance on Blazhko Modulation

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, S.-B. Qian, X.-D. Shi, L.-Y. Zhu   +3 more
doaj   +1 more source

Faint (and bright) variable stars in the satellites of the Milky Way

EPJ Web of Conferences, 2017
I describe two ongoing projects related with variable stars in the satellites of the MilkyWay. In the first project, we are searching for dwarf Cepheid stars (a.k.a δ Scuti and/or SX Phe) in some of the classical dwarf spheroidal galaxies. Our goal is to
Vivas A. Katherina
doaj   +1 more source