UBVRI observations of the flickering of RS Ophiuchi at Quiescence

Details UBVRI observations of the flickering of RS Ophiuchi at Quiescence UBVRI observations of the flickering of RS Ophiuchi at Quiescence

2010-01-06

arxiv.org/abs/1001.0852v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

7 pages, MNRAS (accepted)

Scientific paper

We report observations of the flickering variability of the recurrent nova RS Oph at quiescence on the basis of simultaneous observations in 5 bands (UBVRI). RS Oph has flickering source with (U-B)_0=-0.62 \pm 0.07, (B-V)_0=0.15 \pm 0.10, (V-R)_0=0.25 \pm 0.05. We find for the flickering source a temperature T_fl = 9500 \pm 500 K, and luminosity L_fl = 50 - 150 L_sun (using a distance of d=1.6kpc). We also find that on a (U-B) vs (B-V) diagram the flickering of the symbiotic stars differs from that of the cataclysmic variables. The possible source of the flickering is discussed. The data are available upon request from the authors and on the web www.astro.bas.bg/~rz/RSOph.UBVRI.2010.MNRAS.tar.gz.

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