Flickering of the jet-ejecting symbiotic star MWC 560

Abstract

We analyse optical photometric data of short term variability (flickering) of the accreting white dwarf in the jet-ejecting symbiotic star MWC560. The observations are obtained in 17 nights during the period November 2011 - October 2019. The colour-magnitude diagram shows that the hot component of the system becomes redder as it gets brighter. For the flickering source we find that it has colour 0.14 < B-V < 0.40, temperature in the range 6300 < T_fl < 11000 K, and radius 1.2 < R_fl < 18 Rsun. We find a strong correlation (correlation coefficient 0.76, significance < 0.001) between B band magnitude and the average radius of the flickering source - as the brightness of the system increases the size of the flickering source also increases. The estimated temperature is similar to that of the bright spot of cataclysmic variables. In 2019 the flickering is missing, and the B-V colour of the hot component becomes bluer.

arXiv comment9 pages, accepted for publication in Astronomical Notes. arXiv admin note: substantial text overlap with arXiv:1807.01555

References in corpus (18)

• Gaia Data Release 2. Summary of the contents and survey properties
• X-ray Emissions from Accreting White Dwarfs: a Review
• Physical properties of IP Pegasi: an eclipsing dwarf nova with an unusually cool white dwarf
• Symbiotic stars in X-rays
• A Search for Rapid Photometric Variability in Symbiotic Binaries
• Resumption of mass accretion in RS Oph
• X-ray and UV emission from the recurrent nova RS Ophiuchi in quiescence: Signatures of accretion and shocked gas
• Searching for the Physical Drivers of Eigenvector-1: From Quasars to Nano-Quasars
• Regulation of accretion by its outflow in a symbiotic star: the 2016 outflow fast state of MWC 560
• Searching for flickering statistics in T CrB
• A two-armed pattern in flickering maps of the nova-like variable UU Aquarii
• A multicolor near-infrared study of the dwarf nova IP Peg
• The recurrent nova RS Oph - simultaneous B and V band observations of the flickering variability
• The 2016 outburst of the unique symbiotic star MWC 560 (= V694 Mon), its long-term BVRI evolution and a marked 331 days periodicity
• On the nature of the cool component of MWC 560
• Broad absorption line symbiotic stars: highly ionized species in the fast outflow from MWC 560
• Periods in a 87 Years Light Curve of the Symbiotic Star MWC 560
• HST Color-Magnitude Data for Globular Clusters: I. Transformations Between STIS LP Magnitudes and WFPC2 F606W and F814W Magnitudes

Cited by in corpus (2)

• The GALAH Survey and Symbiotic Stars. I. Discovery and follow-up of 33 candidate accreting-only systems
• The symbiotic binary ZZ CMi: intranight variability and suggested outbursting nature