Eventos

How far back in time can we have knowledge of the universe? Most cosmologists would agree that the physics describing the ‘material content’ of the universe becomes increasingly speculative the further we go back in time.

Supersonic jets are observed to emerge from a wide variety of astrophysical systems, from young stellar objects (YSOs) to AGNs. Despite their different physical scales (from hundreds to billions of astronomical units), they have strong morphological similarities.

The Transneptunian belt is a reservoir of icy bodies in the outer reaches of our solar system. This region is believed to be the source of the Jupiter-Family Comets and is also thought to contain very pristine material, the leftovers of planet formation beyond the ice line.

The present talk emphasizes the most relevant challenges which have been overcome from engineering point of view in order to build the first generation of VLT instruments.

SONYC, "Substellar Objects in Nearby Young Clusters", is an ongoing project to provide a complete census of the brown dwarf and planemo (free-floating objects with masses comparable to those of massive planets)population in nearby young clusters.

We present a study of the distribution of star, gas, and dust components in star-forming regions in nearby galaxies.

Hoy día hay un renovado interés en realizar observaciones de Marte con instrumentación en Tierra de un modo sistemático. Y hacerlo, ademas, en el infrarrojo. La tarea no está exenta de dificultades, incluyendo la contaminación telúrica y el pequeño tamaño del planeta rojo.

El campo magnético de una galaxia no es solamente importante porque nos proporciona un método de observación, sino también por sus efectos dinámicos.

I will briefly review the PN phenomena and describe the power of these objects as probes of stellar evolution and Galactic evolution. I will address their use as potent kinematic tracers and their value as cosmological distance indicators.

Recent developments in stellar evolution theory describing critical phases of this process (e.g. TP-AGB), and the availability of new libraries of theoretical and empirical stellar spectra allow us to build more complete and realistic population synthesis models than those in common use.

The direct detection of dark matter on Earth depends on its density and its velocity in the Solar neighbourhood. Unforunately, it is uncertain whether the dark matter distribution on the relevant physical scales (milliparsec) is homogeneous or not.

I start with a brief overview of photometric redshifts. I describe the new version of the Bayesian Photometric Redshift software, BPZ, and compare its performance with other public photo-z codes as EAZY or LePhare on datasets like COSMOS or ALHAMBRA.

The available blazar samples were selected at relatively high limiting flux densities in the radio and X-ray band. Those samples have small sizes (30-50 objects) making it difficult to statistically derive parameters related to beaming effects.

Mesospheric CO2 clouds have been recently observed on Mars, providing important information about the temperatures and winds at the mesosphere, an atmospheric region characterized by the scarcity of observational records.

The origin of the discoveries, both on the Sun and in the laboratory, of the action of a magnetic field on spectral lines, the so-called Zeeman effect, is discussed.

Sunspots have been studied since the time of Galileo, but they still remain one of the most active research fields in solar physics.

After giving basic information about what and how we know about the epoch of reionization, I will very briefly introduce the cosmic reionization simulations which I am analyzing. Next, the concepts of topology and, in more detail, the Euler Characteristic are introduced.

El Observatorio de Calar Alto cuenta en estos momentos con tres telescopios ópticos-infrarrojos y un conjunto de 11 instrumentos que cubren un gran rango de necesidades en distintos campos científicos, con una demanda desigual por parte de la comunidad astronómica.

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We present the results of a new deep, near-infrared survey of the essentially starless Pipe Nebula, combining data from ESO, Calar Alto, and SPITZER telescopes, and the 2MASS survey.