We present the validation of a transiting low-density exoplanet orbiting the M2.5 dwarf TOI 620 discovered by the NASA Transiting Exoplanet Survey Satellite...
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PublicaciónA Close-in Puffy Neptune with Hidden Friends: The Enigma of TOI 620
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PublicaciónA cold massive interstellar cloud within 120 parsecs of the Sun: K I optical and H I radio observations
We first discovered the presence of a particularly massive cloud in the neighborhood of the Sun, close to the Galactic plane in the direction of Perseus, toward...
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PublicaciónA measurement of the background solar velocity spectrum
Ten years of continuous measurements of the radial velocity of the Sun have been used to estimate the contribution of various solar surface phenomena to the...
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PublicaciónAbsolute parameter determination in low-mass eclipsing binaries - Radiative parameters for BH Vir, ZZ UMA and CR CAS
A new uvby and H-beta monitoring program of low mass eclipsing binaries is currently being carried out in the framework of a 5-yr observational program which...
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PublicaciónAcoustic oscillations in the K2 III star Arcturus
Simultaneous spectrometric and photometric observations have been performed on the red giant star Arcturus, in a search for radial velocity or luminosity...
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PublicaciónAn Earth-sized Planet around an M5 Dwarf Star at 22 pc
We report on the discovery of an Earth-sized transiting planet (R p = 1.015 ± 0.051 R ⊕) in a P = 4.02 day orbit around K2-415 (EPIC 211414619), an M5V star at...
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PublicaciónAn optical time-resolved spectroscopic study of SS Cygni. 1: Quiescence
In this work we analyze time-resolved spectra of SS Cygni in quiescence. The geometrical and orbital fundamental parameters of the system are determined. When...
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PublicaciónAsteroseismology of iota Draconis and Discovery of an Additional Long-period Companion
Giant stars as known exoplanet hosts are relatively rare due to the potential challenges in acquiring precision radial velocities and the small predicted...
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PublicaciónBlue stragglers and the binary hypothesis
An observational test of the binary hypothesis for the origin of blue straggler stars is conducted by searching for radial velocity variables among 30 blue...