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The eclipsing novalike cataclysmic variable CRTS SSS100505 J093417-174421
R. Baptista, A. Bruch, R. Lopes de Oliveira +3
Time-resolved optical photometry, complemented by TESS data and long-term survey light curves, reveals that the transient object CRTS SSS100505 J093417-174421 is an eclipsing noval…
Symbiotic stars in X-rays IV: XMM-Newton, Swift and TESS observations
Isabel J. Lima, G. Juan M. Luna, Koji Mukai +7
White dwarf symbiotic binaries are detected in X-rays with luminosities in the range of 10 to 10 lumcgs. Their X-ray emission arises either from the accretion disk bo…
The contact binary system TYC 7275-1968-1 as seen by optical, UV and X-ray observations
Isabel J. Lima, Ana C. Mattiuci, G. Juan M. Luna +4
We present an analysis of publicly available X-ray and optical observations of TYC 7275-1968-1, a contact binary, red nova progenitor candidate. The long optical time series of ASA…
SOAR observations of the high-viscosity accretion disc of the dwarf nova V4140 Sagitarii in quiescence and in outburst
Raymundo Baptista, Bernardo W. Borges, Alexandre S. Oliveira
We report the analysis of 22 B-band light curves of the dwarf nova V4140 Sgr obtained with SOI/SOAR during two nights along the decline of a superoutburst in 2006 Sep 12-24 and in…