4 papers
Spectral Energy Distribution Analysis of the Supersoft X-ray Source CAL 87: Multiwavelength Constraints
Paulo E. Stecchini, Francisco Jablonski, Marcos P. Diaz +3
We analyse the spectral energy distribution (SED) of the eclipsing supersoft X-ray source CAL 87 covering wavelengths from X-rays to the near-infrared. Our study incorporates 26 da…
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…
Revised ephemeris and orbital period derivative of the supersoft X-ray source CAL 87 based on 34 years of observations
P. E. Stecchini, F. Jablonski, M. P. Diaz +4
In this study, we present an analysis of over 34 years of observational data from CAL 87, an eclipsing supersoft X-ray source. The primary aim of our study, which combines previous…
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…