Marίa J López-González

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At a distance of 1.295 parsecs, the red dwarf Proxima Centauri (α Centauri C, GL 551, HIP 70890 or simply Proxima) is the Sun's closest stellar neighbour and one of the best-studied low-mass stars. It has an effective temperature of only around 3,050 kelvin, a luminosity of 0.15 per cent of that of the Sun, a measured radius of 14 per cent of the radius of(More)
Airglow observations with a Spectral Airglow Temperature Imager (SATI), installed at the Sierra Nevada Observatory (37.06 N, 3.38 W) at 2900-m height, have been used to investigate the presence of tidal variations at mid-latitudes in the mesosphere/lower thermosphere region. Diurnal variations of the column emission rate and vertically averaged temperature(More)
We present for the first time a catalogue of SX Phetype pulsating variables in globular clusters. In addition, SX Phe variables discovered in the Carina dwarf galaxy and other ones probably belonging to the Sagittarius dwarf galaxy are included. This catalogue is intended to be an up-dated list of all the SX Phe stars, in globular clusters and galaxies,(More)
New uvby data collected of AN Lyn together with the reanalysis of old data establish that this star is a multiperiodic pulsator. Three independent frequencies (ν1=10.1756, ν2=18.1309 and ν3=9.5598 cd−1) and some interactions between them are found to be present in the light curve. Changes in amplitude with a large time scale are confirmed for the main(More)
Drug-induced gingival enlargement (GE) is a frequent adverse effect observed in patients treated with anticonvulsant, immunosuppressant, and some antihypertensive medications-the antiepileptic phenytoin being the main drug associated with GE due to its high incidence (around 50%). The molecular mechanisms behind drug-induced gingival overgrowth are still(More)
Simultaneous uvby photometric observations of the high amplitude δ Sct star BS Aqr have been collected and new times of light maxima were obtained. Additionally, some Hβ observations are also presented. The light curves have been analysed and the physical parameters of this star are determined. The results indicate that BS Aqr is an evolved monoperiodic δ(More)
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