Even among the most irradiated gas giants, so-called ultra-hot Jupiters, KELT-9b stands out as the hottest planet thus far discovered with a dayside temperature...
STELLA is a robotic observatory with two fully automatic telescopes (STELLA-I and STELLA-II) located at the Teide Observatory in Tenerife, Spain. Not only the...
The Stellar Content of the Local Group Dwarf Galaxy PHOENIX
We present new deep VI ground-based photometry of the Local Group dwarf galaxy Phoenix. Our results confirm that this galaxy is mainly dominated by red stars...
The strange case of Na I in the atmosphere of HD 209458 b. Reconciling low- and high-resolution spectroscopic observations
Aims: We aim to investigate the origin of the discrepant results reported in the literature about the presence of Na I in the atmosphere of HD 209458 b, based...
The SUMO project I. A survey of multiple populations in globular clusters
We present a general overview and the first results of the SUMO project (a SUrvey of Multiple pOpulations in Globular Clusters). The objective of this survey is...
The SUMO project: a SUrvey of Multiple pOpulations in globular clusters
We present the first results of the SUMO project, aimed at studying multiple populations in globular clusters. For this purpose we obtained wide-field...
The surface of (136108) Haumea (2003 EL{61}), the largest carbon-depleted object in the trans-Neptunian belt
Context: Previously known as 2003 EL{61}, (136108) Haumea, is the largest member of a group of trans-Neptunian objects (TNOs) with similar orbits and “unique”...
The TEP Network - A Search for Transits of Extrasolar Planets: Observations of CM Draconis in 1994
The TEP (Transits of Extrasolar Planets) network undertakes the only current search for terrestrial sized planets around MS-Stars. TEP was formed in 1994 to...
The thermal emission of the young and massive planet CoRoT-2b at 4.5 and 8 μm
We report measurements of the thermal emission of the young and massive planet CoRoT-2b at 4.5 and 8 μm with the Spitzer Infrared Array Camera (IRAC). Our...