activity
20162026
most citedSOAR observations of the high-viscosity accretion disc of the dwarf nova V4140 Sagitarii in quiescence and in outburst

11 citations · 11 across the 6 of their papers we have counts for

collaborators

6 papers

astro-ph.HE2026

A micronova burst in the intermediate polar IGR J17014-4306

Alexandre S. Oliveira, D. C. Souza, G. J. M. Luna +1

We report the detection of a short optical burst in TESS data of IGR J17014-4306, the eclipsing intermediate polar with the longest known orbital period. The burst lasts 1.56 d and…

astro-ph.SR2026

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…

astro-ph.HE2025

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…

astro-ph.SR2024

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…

astro-ph.SR2023

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…

astro-ph.SR2016★ 11 cited

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…