Results 41 to 50 of about 164 (138)

The MACHO Project LMC Variable Star Inventory: XII. Three Cepheid Variables in Eclipsing Binaries

, 2002
We present a method for solving the lightcurve of an eclipsing binary system which contains a Cepheid variable as one of its components as well as the solutions for three eclipsing Cepheids in the Large Magellanic Cloud (LMC). A geometric model is constructed in which the component stars are assumed to be spherical and on circular orbits.
Alcock, C., Allsman, R. A., Alves, D. R., Becker, A. C., Bennett, D. P., Cook, K. H., Drake, A. J., Freeman, K. C., Griest, K., Hawley, S. L., Keller, S., Lehner, M. J., Lepischak, D., Marshall, S. L., Minniti, D., Nelson, C. A., Peterson, B. A., Popowski, P., Pratt, M. R., Quinn, P. J., Rodgers, A. W., Suntzeff, N., Sutherland, W., Vandehei, T., Welch, D. L.   +24 more
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Mining Sky Surveys for Astrophysically Interesting Variable Stars: The Cepheid Period Range

AIP Conference Proceedings, 2009
We have undertaken a project to discover new type II Cepheids in two large‐area sky surveys. However, most of the candidates from the surveys differ from type II Cepheids in their amplitude and period distributions and they form a separate, cooler sequence relative to the Cepheids in a temperature—gravity plot.
Edward G. Schmidt, Joyce Ann Guzik, Paul A. Bradley   +2 more
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Cepheids and other variable stars and the distance to the Galactic Centre [PDF]

Proceedings of the International Astronomical Union, 2012
AbstractWe review and discuss results of our survey of variable stars towards the Galactic Centre and their distances. In our near-infrared monitoring survey using IRSF/SIRIUS, we detected a number of Miras and Cepheids (both classical and type II) within 20 arcmin of the Galactic Centre.
openaire   +1 more source

Testing general relativity with cosmological large scale structure. [PDF]

Gen Relativ Gravit, 2022
Durrer R.
europepmc   +1 more source

Augmenting astrophysical scaling relations with machine learning: Application to reducing the Sunyaev-Zeldovich flux-mass scatter. [PDF]

Proc Natl Acad Sci U S A, 2023
Wadekar D, Thiele L, Villaescusa-Navarro F, Hill JC, Cranmer M, Spergel DN, Battaglia N, Anglés-Alcázar D, Hernquist L, Ho S.   +9 more
europepmc   +1 more source

The MACHO Project LMC Variable Star Inventory: Classical Cepheids, AGB Variables, and the 9 Million Star Color-Magnitude Diagram

, 1998
This paper has been ...
Alves, D. R., Basu, A., Cook, K. H., Welch, D. L., Alcock, C., Marshall, S., Axelrod, T., Drake, A., Freeman, K., Peterson, B., Allsman, R., Becker, A., Tomaney, A., Griest, K., Vandehei, T., Lehner, M., Bennett, D., Minniti, D., Pratt, M., Sutherland, W., Quinn, P.   +20 more
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The OGLE Collection of Variable Stars. Anomalous Cepheids in the Magellanic Clouds

, 2015
18 pages, 9 figures, submitted to Acta ...
Soszynski, I., Udalski, A., Szymanski, M. K., Pietrzynski, G., Wyrzykowski, L., Ulaczyk, K., Poleski, R., Pietrukowicz, P., Kozlowski, S., Skowron, J., Skowron, D., Mroz, P., Pawlak, M.   +12 more
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The Period Radius Relation for Cepheid Variable Stars [PDF]

Monthly Notices of the Royal Astronomical Society, 1973
R. Woolley, B. Carter
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The OGLE Collection of Variable Stars. Classical Cepheids in the Magellanic System

, 2016
16 pages, 5 ...
Soszynski, I., Udalski, A., Szymanski, M. K., Skowron, D., Pietrzynski, G., Poleski, R., Pietrukowicz, P., Skowron, J., Mroz, P., Kozlowski, S., Wyrzykowski, L., Ulaczyk, K., Pawlak, M.   +12 more
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Square root two period ratios in Cepheid and RR Lyrae variable stars

, 2014
We document the presence of a few Cepheid and RR Lyrae variable stars with previously unrecognized characteristics. These stars exhibit the property of a period ratio of main pulsation divided by secondary pulsation P1/P2 very close to sqrt(2). Other stars of these types have period ratios which do not show clustering with a close association and a ...
Hippke, Michael, Learned, John G., Zee, A.   +2 more
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