Results 11 to 20 of about 2,679,498 (179)

The K2 RR Lyrae Survey [PDF]

EPJ Web of Conferences, 2017
We have initiated a large survey with K2 to observe thousands of RR Lyrae stars along the Ecliptic. The high photometric precision and the 80-90-day continuous coverage will allow us to investigate the light variation of these galactic structure tracer ...
Szabó Róbert, Kolenberg Katrien, Molnár László, Plachy Emese, Klagyivik Péter, Hanyecz Ottó   +5 more
doaj   +2 more sources

RR Lyrae stars with variable mean magnitudes

Astronomy & Astrophysics
Context. A number of RR Lyrae stars exhibit variable mean magnitudes in the OGLE survey light curves of the Galactic bulge. Hitherto, this phenomenon has not been studied, as it was generally assumed to be related to photometric issues. Aims.
Hajdu G., Jurcsik J., Catelan M., Pietrzyński G., Hocdé V., Soszyński I., Udalski A., Lee C.-U., Kim D.-J.   +8 more
doaj   +3 more sources

Flavours of variability: 29 RR Lyrae stars observed with Kepler [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
We present our analysis of Kepler observations of 29 RR Lyrae stars, based on 138-d of observation. We report precise pulsation periods for all stars. Nine of these stars had incorrect or unknown periods in the literature. Fourteen of the stars exhibit both amplitude and phase Blazhko modulations, with Blazhko periods ranging from 27.7 to more than 200
Benko, J.M., Kolenberg, Katrien, Szabo, R., Kurtz, D.W., Bryson, S., Bregman, J., Still, M., Smolec, R., Nuspl, J., Nemec, J.M., Moskalik, P., Kopacki, G., Kollath, Z., Guggenberger, E., Di Criscienzo, M., Christensen-Dalsgaard, J., Kjeldsen, H., Borucki, W.J., Koch, D., Jenkins, J.M., Van Cleve, J.E.   +20 more
openaire   +4 more sources

The Composition of HB Stars: RR Lyrae Variables [PDF]

The Astronomical Journal, 1995
59 pages, Latex using aaspp.sty, ps-files of text, tables (21) and figures (23) available from ftp://boas3.bo.astro.it/pub/gisella To appear in October 1995 Astronomical ...
Clementini, G., Carretta, E., Gratton, R., Merighi, R., Mould, J. R., McCarthy, J. K.   +5 more
openaire   +2 more sources

RR Lyrae Variable Stars and the Distance Scale [PDF]

Symposium - International Astronomical Union, 1978
A statistical parallax algorithm (Clube and Dave, 1978a,b), using the technique of maximum likelihood, has been applied to a set of 103 ‘ab’ - RR Lyrae stars in the solar neighborhood (r 2<kpc), using observational data from the Royal Greenwich Observatory Bulletins. A second set of 130 ‘ab’ - RR Lyrae stars has been kindly supplied to us by Dr.
S. V. M. Clube, J. A. Dawe
openaire   +1 more source

Identifying RR Lyrae Variable Stars in Six Years of the Dark Energy Survey [PDF]

The Astrophysical Journal, 2021
Abstract We present a search for RR Lyrae stars using the full six-year data set from the Dark Energy Survey covering ∼5000 deg2 of the southern sky. Using a multistage multivariate classification and light-curve template-fitting scheme, we identify RR Lyrae candidates with a median of 35 observations per candidate.
Stringer, K. M., Drlica-Wagner, A., Macri, L., Martínez-Vázquez, C. E., Vivas, A. K., Ferguson, P., Pace, A. B., Walker, A. R., Neilsen, E., Tavangar, K., Wester, W., Abbott, T. M. C., Aguena, M., Allam, S., Bacon, D., Bechtol, K., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Costanzi, M., Crocce, M., da Costa, L. N., Pereira, M. E. S., De Vicente, J., Desai, S., Diehl, H. T., Doel, P., Ferrero, I., García-Bellido, J., Gaztanaga, E., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., Hoyle, B., James, D. J., Kuehn, K., Kuropatkin, N., Li, T. S., Maia, M. A. G., Marshall, J. L., Menanteau, F., Miquel, R., Morgan, R., Ogando, R. L. C., Palmese, A., Paz-Chinchón, F., Plazas, A. A., Roodman, A., Sanchez, E., Schubnell, M., Serrano, S., Sevilla-Noarbe, I., Smith, M., Soares-Santos, M., Suchyta, E., Tarle, G., Thomas, D., To, C., Varga, T. N., Wilkinson, R. D., Zhang, Y., Collaboration, the DES   +69 more
openaire   +10 more sources

THE CHEMICAL COMPOSITIONS OF VARIABLE FIELD HORIZONTAL-BRANCH STARS: RR LYRAE STARS [PDF]

The Astrophysical Journal Supplement Series, 2011
We present a detailed abundance study of 11 RR Lyrae ab-type variables: AS Vir, BS Aps, CD Vel, DT Hya, RV Oct, TY Gru, UV Oct, V1645 Sgr, WY Ant, XZ Aps, and Z Mic.High resolution and high S/N echelle spectra of these variables were obtained with 2.5 m du Pont telescope at the Las Campanas Observatory.
For, Bi-Qing, Sneden, Christopher, Preston, George W.   +2 more
openaire   +3 more sources

RR Lyrae stars in the GCVS observed by the Qatar Exoplanet Survey [PDF]

, 2015
This publication was made possible by NPRP grant # X-019-1-006 from the Qatar National Research Fund (a member of Qatar Foundation). AAF is grateful to DGAPA-UNAM for grant number IN104612.We used the light curve archive of the Qatar Exoplanet Survey to ...
Bramich, Daniel Martyn, Cameron, Andrew Collier, Arellano Ferro, A., Horne, Keith Douglas, West, R. G., Alsubai, Khalid Abdulla T, Pollacco, D., Parley, Neil   +7 more
core   +2 more sources

Variable Sources: RR Lyrae stars

, 2022
This table describes the RR Lyrae stars.
DPAC Consortium, European Space Agency (ESA)   +1 more
core   +1 more source

New periodic variable stars coincident with ROSAT sources discovered using SuperWASP [PDF]

, 2007
We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously recognised as periodic variables.
West, Richard G., Pollacco, Don, M. Gallaway, Street, R. A., Horne, K. (Keith), Kane, S. R., Christian, Damian Joseph, D. J. Christian (7603835), Hellier, Coel, Enoch, B., Nicholas, J. P., D. Pollacco (7603205), Irwin, J., Skillen, I., B. Enoch (7603838), West, R. G., R. A. Street, D. J. Christian, T. A. Lister (7603856), Irwin, Jonathan, K. Horne, Ryans, R., C. A. Haswell, D. M. Wilson (2428792), Wilson, D. M., Christian, D. J., J. P. Nicholas (7614728), S. R. Kane (7603853), S. R. Kane, Haswell, C. A., J. P. Nicholas, B. Enoch, C. Hellier (7603562), Norton, A. J., W. I. Clarkson, R. G. West, Lister, T. A., W. I. Clarkson (7612619), West, R .G., J. Irwin, Gallaway, M., T. A. Lister, Collier Cameron A (7614731), Pollacco, D., Parley, N., K. Horne (7603850), R. Ryans, C. A. Haswell (7603844), P. J. Wheatley (7590065), Hellier, C., Norton, Andrew J., R. Ryans (7612838), N. Parley, D. M. Wilson, Parley, N. R., I. Skillen (7601975), A. J. Norton (7603859), Horne, Keith Douglas, Horne, K. D., I. Skillen, R. G. West (7602272), A. Collier Cameron, J. Irwin (7606340), P. J. Wheatley, C. Hellier, R. A. Street (7603868), M. Gallaway (7614725), N. Parley (7603862), Cameron, Andrew Collier, Collier Cameron, A., Clarkson, W. I., Kane, Sharad R., Wheatley, P. J., A. J. Norton, Wilson, D. M. (David M.), D. Pollacco   +75 more
core   +1 more source