RR-Lyrae-type pulsations from a 0.26-solar-mass star in a binary system

G. Pietrzyński (), I. B. Thompson, W. Gieren, D. Graczyk, K. Stępień, G. Bono, P. G. Prada Moroni, B. Pilecki, A. Udalski, I. Soszyński, G. W. Preston, N. Nardetto, A. McWilliam, I. U. Roederer, M. Górski, P. Konorski and J. Storm
Additional contact information
G. Pietrzyński: Universidad de Concepción, Casilla 160-C, Concepciòn, Chile
I. B. Thompson: Carnegie Observatories, 813 Santa Barbara Street
W. Gieren: Universidad de Concepción, Casilla 160-C, Concepciòn, Chile
D. Graczyk: Universidad de Concepción, Casilla 160-C, Concepciòn, Chile
K. Stępień: Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland
G. Bono: via della Ricerca Scientifica 1, 00133 Rome, Italy
P. G. Prada Moroni: Università di Pisa, Largo B. Pontecorvo, 3, I-56127, Pisa, Italy
B. Pilecki: Universidad de Concepción, Casilla 160-C, Concepciòn, Chile
A. Udalski: Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland
I. Soszyński: Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland
G. W. Preston: Carnegie Observatories, 813 Santa Barbara Street
N. Nardetto: Laboratoire Lagrange, UMR7293, UNS/CNRS/OCA, 06300 Nice, France
A. McWilliam: Carnegie Observatories, 813 Santa Barbara Street
I. U. Roederer: Carnegie Observatories, 813 Santa Barbara Street
M. Górski: Universidad de Concepción, Casilla 160-C, Concepciòn, Chile
P. Konorski: Universidad de Concepción, Casilla 160-C, Concepciòn, Chile
J. Storm: Leibniz Institute for Astrophysics, An der Sternwarte 16, 14482 Potsdam, Germany

Nature, 2012, vol. 484, issue 7392, 75-77

Abstract: The pulsating star OGLE-BLG-RRLYR-02792 is known to be a member of an eclipsing binary system, and its mass is now determined to be only 0.26 times that of the Sun, meaning that it cannot be a classical RR Lyrae pulsator.

Date: 2012
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DOI: 10.1038/nature10966

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