Results 101 to 110 of about 5,541 (198)

Provisional elements of 2 variable stars of the RR Lyrae type

, 1924
E. Hertzsprung
openalex   +3 more sources

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

ANCIENT STARS BEYOND THE LOCAL GROUP: RR LYRAE VARIABLES AND BLUE HORIZONTAL BRANCH STARS IN SCULPTOR GROUP DWARF GALAXIES [PDF]

, 2009
G. S. Da Costa, M. Rejkuba, H. Jerjen, E. K. Grebel   +3 more
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The Next Generation Virgo Cluster Survey. XXXVII. Distant RR Lyrae Stars and the Milky Way Stellar Halo Out to 300 kpc

The Astrophysical Journal
RR Lyrae stars are standard candles with characteristic photometric variability and serve as powerful tracers of Galactic structure, substructure, accretion history, and dark matter content.
Yuting Feng, Puragra Guhathakurta, Eric W. Peng, Stephen D. J. Gwyn, Laura Ferrarese, Patrick Côté, Jean-Charles Cuillandre, Jane Munsell, Manjima Talukdar   +8 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

EXPLORING THE VARIABLE SKY WITH LINEAR. II. HALO STRUCTURE AND SUBSTRUCTURE TRACED BY RR LYRAE STARS TO 30 kpc [PDF]

, 2013
Branimir Sesar, Željko Ivezić, J. Stuart, Dylan M. Morgan, A. C. Becker, Sanjib Sharma, L. Palaversa, Mario Jurić, P. R. Woźniak, Hakeem M. Oluseyi   +9 more
openalex   +3 more sources

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

RW Arietis; an RR Lyrae Variable Star in an Eclipsing System [PDF]

International Astronomical Union Colloquium, 1971
AbstractRW Arietis was observed photoelectrically in the UBV-system during fall and winter 1966 with the 70 cm telescope at the Lunar and Planetary Laboratory Catalina station, University of Arizona, Tucson, on 19 nights. Peculiar variations of the usually stable RRc light curve observed on three nights can be interpreted as a superposition of the RR ...
openaire   +1 more source

Candidate RR Lyrae Associated with the Ultrafaint Dwarf Galaxy Aquarius III

The Astronomical Journal
We report the search of RR Lyrae in the vicinity of a newly discovered ultrafaint dwarf galaxy, Aquarius III. Based on the known RR Lyrae catalogs and gri -band light curves retrieved from public archives, we identified a RR Lyrae with distance ...
Chow-Choong Ngeow, Anupam Bhardwaj
doaj   +1 more source

The Helium Abundance in the Envelopes of the Bluest RR Lyrae Stars in Globular Clusters and Dependence of Globular Cluster Variable Star Properties on Chemical Composition [PDF]

, 1973
А. В. Миронов
openalex   +1 more source