Monday, July 1 - Session 1 - 14:35

STARE results on a single field: tens of new pulsating stars

R. Alonso, T.M Brown, J.A. Belmonte
Instituto de Astrofísica de Canarias, C/Vía Láctea s/n, 38200 La Laguna, Spain
High Altitude Observatory/National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO 80307, USA

 

In this report, we present the results of a STARE's three month observational run centred at the Cygnus constellation. STARE uses a 9.9 cm aperture, 286 mm focal length automatic telescope installed at the Observatorio del Teide (Spain) and funded by NASA Origins of the Solar Systems programme. A total amount of aprox. 14000 stars with 9<R<12.5 magnitude, in STARE's 6.1x6.1 FOV, has been analyzed to obtain lightcurves of each of these stars. The data spans for more than 85 nights. In this single field, we detect more that 40 stars with pulsation modes between 5 and 40 c/d, the vast mayority previously unknown to be variables. A big number of eclipsing binaries and long period pulsating stars has also been discovered.
Amongst many others, we will focus the presentation in two interesting cases. One is a multiperiodic Scuti with clear oscillations in the low frequencies region, with two peaks in a 2:1 frequencies ratio, that we might interpret as binarity of the Scuti. The second interesting case might be a RR Lyrae in a higly eccentric eclipsing binary.

 
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