Analyses of very accurate CoRoT space photometry, past Johnson V photoelectric photometry and high-resolution echelle spectra led to the determination of...
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PublicationCoRoT photometry and high-resolution spectroscopy of the interacting eclipsing binary AU Monocerotis
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PublicationCorrelated optical/X-ray long-term variability in LMXB 4U 1636-536
We have conducted a 3-month programme of simultaneous optical, soft and hard X-ray monitoring of the LMXB 4U 1636-536/V801 Ara using the SMARTS 1.3-m telescope...
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PublicationCorrelated X-Ray and Optical Variability in V404 Cygni in Quiescence
We report simultaneous X-ray and optical observations of V404 Cyg in quiescence. The X-ray flux varied dramatically by a factor of >~20 during a 60 ks...
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PublicationCOYOTES II: SPOT properties and the origin of photometric period variations in T Tauri stars.
We present the results of a new multi-site campaign (COYOTES II) to monitor the light variations of T Tauri stars (TTS) of the Taurus-Auriga dark cloud. The...
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PublicationDelimiting the black hole mass in the X-ray transient MAXI J1659-152 with Hα spectroscopy
MAXI J1659-152 is a 2.4 h orbital period X-ray dipping transient black hole candidate. We present spectroscopy of its I ≍ 23 quiescent counterpart, where we...
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PublicationDeriving the dynamical masses of Ultra-Luminous X-ray Sources with OSIRIS
Ultra Luminous X-ray Sources (ULXs) are extragalactic X-ray point sources with L_X ˜ 10^39-10^41 erg s^-1 discovered in the 80s with the Einstein satellite and...
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PublicationDetection of a 23.6 min periodic modulation in the optical counterpart of 3XMMJ051034.6-670353
We present high speed optical photometric observations made using the NTT and ULTRACAM of the optical counterpart of 3XMMJ051034.6-670353, which was recently...
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PublicationDetection of a large Be circumstellar disk during X-ray quiescence of XTE J1946+274
Aims: We present a multiwavelength study of the Be/X-ray binary system XTE J1946+274 with the main goal of better characterizing its behavior during X-ray...
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PublicationDetection of Chromatic Microlensing in Q 2237 + 0305 A
We present narrowband images of the gravitational lens system Q 2237 + 0305 made with the Nordic Optical Telescope in eight different filters covering the...