Seminars
Displaying 351 - 400 of 1201
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16/06/2016 - 12:30
Space VLB interferometer RadioAstron: status and results The RadioAstron Space VLBI mission utilizes the 10-m radio telescope on-board the dedicated Spektr-R spacecraft to observe cosmic radio sources with an unprecedented angular resolution at 92, 18, 6 and 1.3 cm. Yuri Kovalev |
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09/06/2016 - 12:30
Blazars: Order and Disorder Blazars are the most luminous persistent objects in the sky. They emit light across the entire electromagnetic spectrum, from low-energy radio waves to high-energy gamma-rays, and they exhibit variability on timescales that range from years down to minutes. The launch of the Fermi Large Area Telescope (LAT) in 2008 has ushered in a new era of high-energy astrophysics. Prof. Nicholas Macdonald |
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02/06/2016 - 12:30
Star formation and AGN activity in the most luminous LINERs in the local universe In this talk I will focus on the most luminous LINERs in the local universe, where we studied their SF and AGN activity in order to understand the LINER phenomenon in relation to star-forming galaxies and to compare their properties with those of the LINERs at z ~ 0.3. Dr. Mirjana Povic |
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25/05/2016 - 12:30
ECS: Diseño y construcción de Observatorios Astronómicos ECS es una empresa de ingeniería especializada en Observatorios Astronómicos. Realiza los pertinentes estudios y evaluaciones de calidad de cielo, logística y necesidades específicas, para ubicar y diseñar el observatorio. Francisco Ángel Espartero Briceño |
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19/05/2016 - 12:30
The magnetic field vector in solar chromospheric structures: the diagnostic potential of the near infrared He I 1083nm triplet The solar chromosphere is permeated by solar structures such as sunspots, surges, flare ribbons, prominences (filaments) or spicules, where non-local thermodynamic equilibrium effects dominate the state of the plasma and where the magnetic fields are expected to be much lower in intensity than in the photosphere underneath. Dr. David Orozco |
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12/05/2016 - 12:30
Sgr A* and its environment: insights from X-ray observations Almost every massive galaxy has at least one super-massive black hole (SMBH) at its center. Most (>90%) of those SMBHs are quiet. Understanding the accretion of low-luminosity SMBHs represents a very important and fundamental problem in astronomy. Dr. Daniel Wang |
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05/05/2016 - 12:30
Formación Estelar: ¿podemos acotar el problema? Mientras que la evolución estelar conforma un cuerpo teórico bien estructurado, incluyendo aquí las últimas fases de la misma, la formación estelar está lejos de admitir una formulación teórica predictiva que permita, conociendo las propiedades físicas de la nube molecular, pergeñar las propiedades de la futura población estelar naciente. Dr. Emilio Alfaro |
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28/04/2016 - 12:30
The lifetime dilemma of evaporating black holes The standard view is that black holes exist, maybe not with all the properties of strict black holes in classical General Relativity, but sufficiently close to them that one does not need worrying in the astrophysical practice. Dr. Carlos Barceló |
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21/04/2016 - 12:30
Colloquium on ERC's proposals Colloquium on ERC's proposals Drs. Alejandro Luque & Rainer Schoedel |
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18/04/2016 - 12:30
Issues in star and cluster formation The upper mass stellar initial mass function is similar to the mass function of young star clusters. I argue that this is a basic result expected when gravitational focusing on scales much larger than the Jeans length operate. I will also present recent VLBI studies of Orion which yield new distance estimates. Prof. Lee Hartmann |
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13/04/2016 - 12:30
Young brown dwarfs: exploring the bottom of the Initial Mass Function Brown dwarfs are the objects that bridge the realms of stars and planets, making them important benchmarks for testing star and planet formation theories. In particular, studies of brown dwarfs at young ages are crucial for understanding the mass dependence in the formation and early evolution of stars. Lda. Koraljka Muzic |
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07/04/2016 - 12:30
CARMENES as a precursor for HIRES@E-ELT: First results at the telescope CARMENES (Calar Alto high-Resolution search for M dwarfs with Exoearths with Near-infrared and optical Échelle Spectrographs) is the next generation instrument built for the 3.5m telescope at the Centro Astronómico Hispano-Alemán (Calar Alto Observatory; CAHA, Almería, Spain). Dr. Pedro Amado |
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31/03/2016 - 12:30
Are LIGO data connected? The analysis of ultra-precise data of stellar light variations observed with satellites (CoRoT, Kepler, SoHO, etc.) has revealed some unexpected results that cannot be explained by theory. Prof. Rafael Garrido/Dr. Javier Pascual |
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17/03/2016 - 12:30
OCTOCAM: A fast multi-channel imager and spectrograph proposed for the Gemini Observatory OCTOCAM has been proposed to the Gemini observatory as a workhorse imager and spectrograph that will fulfill the needs of a large number of research areas in the 2020s. Dr. Antonio de Ugarte |
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10/03/2016 - 12:30
Shaking the grounds of unification: are type 1 and type 2 AGN intrinsically different? The simplest standard unified models of Active Galactic Nuclei (AGN), put forward more than 30 years ago, postulate that the diversity of observed properties of AGN can be largely explained as a viewing angle effect resulting in anisotropic nuclear obscuration. A key ingredient of these models is a homogeneous distribution of dust and gas located at tens of parsecs that obscures the AGN nuclear region from certain lines-of-sight (the ‘torus’).... Dr. Silvia Mateos |
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04/03/2016 - 12:30
Multiwavelength studies of massive stars We will review the importance of multi-wavelength studies of massive stars and how each of the wavelength ranges may provide crucial and complementary information to characterize these objects. We will discuss the consistency of UV through radio studies of O stars, LBVs and WRs as well as the reliability of analyses based on a limited wavelength region. Dr. Francisco Najarro |
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01/03/2016 - 12:30
Massive galaxy clusters: from relaxed to highly substructured Galaxy clusters are important in cosmology to set constraints on various parameters, but they are also intrinsically interesting, since they allow to study many physical processes. The DAFT/FADA survey of 90 clusters in the redshift range 0.4<z<0.9 has allowed us to analyse several aspects of clusters, linked with their formation. We will present here our search for substructuring and its variation with redshift. For subsamples of clusters... Florence Durret |
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25/02/2016 - 12:30
Progress on the construction of the South African SKA Pathfinder (MeerKAT) and the African VLBI Network &The Australian Square Kilometre Array Pathfinder (ASKAP) Progress on the construction of the South African SKA Pathfinder (MeerKAT) and the African VLBI Network &The Australian Square Kilometre Array Pathfinder (ASKAP) Drs. Tracy Cheetham & Antony Schinckel |
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18/02/2016 - 12:30
Experimental simulation of the atmospheric ablation of cosmic dust particles: implications for HPLA radar and lidar observations The inner solar system is full of interplanetary dust particles (IDPs) originating from cometary trails and collisions between asteroids. The entry and evaporation of IDPs in planetary atmospheres is related to a variety of phenomena including formation of mesospheric metal layers and clouds, and stratospheric aerosol chemistry. Dr. Juan Carlos Gómez Martín |
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11/02/2016 - 12:30
The role of magnetic field for stability in relativistic jets Relativistic jets have been observed or postulated in various astrophysical sources, including active galactic nuclei, microquasars in the galaxy and gamma-ray bursts. There are many unsolved problems related to the relativistic jets, for example, formation & acceelration, collimation, and long-term stability. The most promising mechanisms for producing and accelerating relativistic jets, and maintaining collimated structure of relativistic... Dr. Yosuke Mizuno |
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04/02/2016 - 12:30
ORISON un proyecto de instrumentación astronómica estratosférica ORISON es un proyecto financiado por el H2020 de la Unión Europea, dentro de la convocatoria INFRASUPP2, coordinado desde el IAA. Su objetivo principal es estudiar la viabilidad de una infraestructura de investigación basada en globos que permitan poner, a costes razonables, instrumentación de no demasiado peso (<500 kg) en plataformas estabilizadas, a alturas estratosféricas, del orden de 40km sobre el suelo, con objeto de conseguir metas... Dr. Jose Luis Ortíz |
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28/01/2016 - 12:30
Spectro-interferometry study of red supergiants Red supergiant stars (RSGs) are cool and massive stars that evolve toward Wolf-Rayet stars and supernovae. They have extended atmospheres and strong stellar winds, which lead to significant mass loss. Currently, the mechanisms that explain the large observed atmospheric extensions are open to debate. The estimation of the fundamental parameters of these stars and their location in the HR diagram are very important for calibrating the... Dr. Belén Arroyo-Torres |
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14/12/2015 - 11:30
Challenges of the Doppler technique in the presence of stellar noise for the detection of Earth-like exoplanets The Doppler method is still the most efficient one in detecting exoplanets around nearby stars which are amenable for further characterization. In particular, planets as small as the Earth can in principle be detected in hot orbits around sun-like stars (G and K dwarfs), and warm to temperate orbits around M-dwarfs (M<0.5 sun) in orbital periods from a few days to tens of days. Unfortunately, these time-scales are plagued with structured... Dr. Guillem Anglada-Escude |
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03/12/2015 - 13:30
Presence and future of adaptive optics at the ESO VLT In this brief talk I will present the current and near-future adaptive optics (AO) capabilities of ESO's VLT. I will report on a recent meeting at ESO, where we discussed science cases for future AO instrumentation at the VLT in the era of the E-ELT. Probably within the next year, the science cases for a 3rd generation AO instrument (to arrive at the VLT in ~ 2025) will be laid down in a white paper. The goal of my talk is to get the IAA... Rainer Schoedel |
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26/11/2015 - 13:30
Following the posterior with the ALHAMBRA survey The probability distribution functions (PDFs) provided by photometric redshift codes such as BPZ are a powerful tool for galaxy evolution studies. Despite of their potential, only a few studies in the literature attempt to use the full PDFs in their analysis and we are still learning how to make the most of them. We present the latests PDF advances from the ALHAMBRA survey, focusing in the estimation of the B-band luminosity function. We... Carlos López-Sanjuan |
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12/11/2015 - 13:30
High Spatial Resolution 2D Nebular Abundances in Disk Galaxies Galaxies evolve through the changes that face their various components such as the gas, dust, stars, and dark matter. Gas and dust are prime ingredients for the formation of new stars, and thereafter the massive stars newly formed will quickly modify the chemical composition of galaxies whereas low mass stars will take more time to contribute to the interstellar gas enrichment. Beside the stars, other processes occurring during the galaxies... Laurie Rousseau-Nepton |
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08/10/2015 - 14:30
Dissecting a rare galaxy merger (the Hummingbird) with radio and mm-observations The Bird is a luminous infrared galaxy product of a triple merger. Previous infrared observations have shown that the ongoing star formation in the least massive of the components (the head) outshines that of the mprimary nuclei (the heart and the body). This clashes with the commonly accepted major merger scenario in which the SF is expected to be higher in central compact regions. Here I will present preliminary results... Cristina Romero-Cañizales |
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24/09/2015 - 14:30
Test In Space, your opportunity to experiment in orbit Traditionally, experimentation in space has consisted in limited, expensive, long-term and complicated projects with hard requirements and restrictions. Currently, new space increases the possibilities to experiment in space for researchers from all kind of fields and, with TEST IN SPACE, this is also simple and fast. If you are interested in investigation under real space environment, you can just propose it to TEST IN SPACE. TEST IN SPACE... tbd |
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17/09/2015 - 14:30
Baryon Acoustic Oscillations and the Expansion History of the Universe The tiny inhomogeneities left over from the inflationary phase seeded the early Universe with primordial density perturbations. The photon-baryon fluid reacted to these perturbations by forming spherical pressure waves known as baryon acoustic oscillations (BAO). These waves propagated through the primordial plasma until the Universe became transparent to radiation, effectively stopping the dragging of the baryons by the photons. This left... A. J. Cuesta, on behalf of the BOSS Collaboration |
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11/09/2015 - 14:30
Untold Stories of Andromeda: A Multi-wavelength View of The Nuclear Environment in M31 The Andromeda galaxy (M31), which harbors the nearest LINER and the closest stellar bulge accessible in the optical, is an ideal laboratory for studying the physical regulation of galactic nuclei, and in turn the co-evolution of super-massive black holes and their host galaxies. I will provide an overview of the stellar and interstellar components of the M31 bulge, as well as its dormant but otherwise well-known SMBH, M31*. I will introduce... Prof. Zhiyuan Li |
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17/06/2015 - 14:30
Into Darkness: the seek for pulsars in the Galactic Centre Pulsars are highly-magnetized rotating neutron stars that emit beams of electromagnetic emission. They are unique astronomical laboratories, not only because they are the most magnetized, densest, directly-observable objects in the Universe, but also because they act as extremely precise clocks located all over the Galaxy. The variety of science enabled by pulsars is very broad, from, e.g., limits on the Equation-of-... Pablo Torne |
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15/06/2015 - 14:30
The influence of dynamics on airglow and constituents in the terrestrial mesopause region In the terrestrial atmosphere, the mesopause region (~90 km height) is a transition region between the inviscid lower/middle atmosphere and the geomagnetically forced geospace. It is a region of strong dynamical forcing and where several constituents vary strongly with height one of which is atomic oxygen. Airglow, which is the result of naturally occurring chemiluminescence in the mesopause region involving exothermic reactions associated... Prof. William Ward |
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11/06/2015 - 14:30
Ubiquitous magnetic flux emergence in the Sun: a fundamental process The fundamental process of magnetic flux emergence happens continuously and everywhere over the solar surface, hence the ubiquitousness. No matter which spatial (granular, supergranular, active region) and temporal scale we look at buoyant magnetic field coming from the convection zone pierces the photosphere in the form of two opposite polarities and travels upwards through the solar atmosphere. We will describe the general characteristics... Ada Ortiz Carbonell |
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09/06/2015 - 14:30
Massive Star Formation at the Puerto Varas Workshop The recent decades have witnessed major advances in our understanding of the formation of solar-mass stars. However, the formation mechanisms of stars at the extremes of the mass range, that is, on one hand very massive stars and in the other brown dwarfs, remain poorly understood. I will summarize the main results presented in a recent meeting on massive star formation that took place in Puerto Varas,... Luis F. Rodriguez |
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28/05/2015 - 14:30
Observing the onset of outflow collimation in a massive protostar: assembling the puzzle The current paradigm of star formation through accretion disks, and magnetohydrodynamically driven gas ejections, predicts the development of collimated outflows, rather than expansion without any preferential direction. We present radio continuum observations of the massive protostar W75N(B)-VLA 2, showing that it is a thermal, collimated ionized wind and that it has evolved in 18 years from a compact source into an elongated one. This... José María Torrelles |
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14/05/2015 - 14:30
ASKAP Commissioning and Early Science The Australian Square Kilometre Array Pathfinder (ASKAP) is a new generation low frequency (700-1800 MHz) interferometer capable of a wide instantaneous field of view of 30 square degrees, which is realised with the Phased Array Feed (PAF) technology. The first stage of the instrument, which consists of 6 first generation PAFs and is called Boolardy Enigeering Test Array (BETA), has been brought into operations... Maxim Voronkov |
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30/04/2015 - 14:30
Seven Solutions: industria para las grandes infraestructuras científicas en Granada Seven Solutions es una compañía tecnológica con amplia experiencia diseño de electrónica, software empotrado y mecánica. Colabora con empresas como Indra, Thales, Cibernos, Siemens o National Instruments. Seven Solutions cuenta con una dilatada experiencia en el campo de la industria de la ciencia, participando activamente en iniciativas open hardware como el OHWR.org.... Javier Díaz Alonso |
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16/04/2015 - 14:30
The San Pedro Mártir observatory and its UBVRI photometric survey of Galactic clusters A short presentation of the San Pedro Martir Observatory will be given including its astroclimatic characteristics and its projects for the near future. I will then present the current status of our ongoing survey aimed at generating a homogeneous catalogue of physical parameters of stellar clusters in our Galaxy. It is expected that this data will allow the study of the properties of the galactic disk more accurately and reliability, helping... Raul Michel Murillo |
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09/04/2015 - 14:30
Ionized gas in the CALIFA galaxies We present here the most recent results we have obtained in our exploration of the gas abundances using the IFU data from the CALIFA survey. Using our own developed tools we have extracted the ionized gas properties of ~10.000 HII regions, in order to explore: (i) the relation between these properties and those of the host galaxies and the underlying stellar population; (ii) the local relation between the gas... Sebastian Sanchez |
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26/03/2015 - 13:30
FROM ALHAMBRA TO JAVALAMBRE. A SCIENTIFIC PROJECT The Observatorio Astrofísico de Javalambre, with its 2 very wide field telescopes has been purposely built to conduct large scale surveys. The use of medium-narrow band filters, pioneered by the ALHAMBRA project, will produce a low resolution spectrum of every pixel in the sky. The first defined projects, J-PLUS@T80 and J-PAS@T250 are driven by the study of the nearby Universe and the study of dark energy... Prof. Mariano Moles Villamate |
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12/03/2015 - 13:30
AirPlay Service The Computer Center has launched a new service called AirPlay with aim of provide the users the projection of multimedia contents via wireless (WiFi). This will allow to make presentations from laptops or mobile devices without the need of any wiring connection, contributing greater ease and mobility to the speaker. In this seminar will explain the configuration and use procedures of the AirPlay service for devices with Android, iOS, OS X,... Francisco Manuel Bayo Muñoz |
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05/03/2015 - 13:30
Understanding the obscuring torus and the nuclear star formation of AGN using GTC/CanariCam observations The fueling of black holes occurring in active galactic nuclei (AGN) is fundamental to the evolution of galaxies. AGN themselves are largely explained in the context of a unified theory, by which a geometrically and optically thick torus of gas and dust obscures the AGN central engine. The torus intercepts a substantial amount of flux from the central engine and and reradiates it in the infrared. There are still many... Almudena Alonso-Herrero |
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19/02/2015 - 13:30
FORMATION AND EVOLUTION OF COSMIC DUST: THE NANOCOSMOS PROJECT Evolved stars are the factories of cosmic dust. This dust is made of tiny grains that are injected into the interstellar medium and plays a key role in the evolution of astronomical objects from galaxies to the embryos of planets. However, the fundamental processes involved in dust formation and evolution are still a mystery. The aim of the NANOCOSMOS project is to take advantage of the new ... J. Cernicharo, C. Joblin & J.A. Gago |
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16/02/2015 - 13:30
Activity and Evolution of Oort Cloud Comets Comets formed early in the evolution of the solar system while material was accreting to form planets. When proto-planets became large enough, a population of comets was dynamically ejected into the Oort cloud. Comets entering the inner solar system for the first time are called dynamically new comets. These objects have not been heated by the Sun and retain some of the most primordial material available for observation in the solar system... Dr. Dennis Bodewits |
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11/12/2014 - 13:30
Structural properties of isolated galaxies Distinct components of galaxies are products of internal and environmental processes throughout their lifetimes. Disentangling these processes is an important issue for understanding how galaxies form and evolve. In this context isolated galaxies represent a fruitful population to explore as they should be mainly affected by internal processes (minimal merger/accretion/tidal effects). I will present the structural analysis of a representative... Mirian Fernández Lorenzo |
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04/12/2014 - 13:30
GLORIA: Global Robotic Intelligent Array for e-science Dr. Alberto J. Castro-Tirado |
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04/12/2014 - 13:30
GLORIA: Global Robotic Intelligent Array for e-science GLORIA is an FP7 project (UE-funded in 2011-14) hosted by 14 institutions (including several Spanish OPIs and Universities) based on a collaborative web 2.0 which allows to access 14 robotic telescopes worldwide with a diameter in the range 0.25-0.60 m. The goal is to grant the GLORIA users community (from citizens to amateur astronomers) participation in Citizen Science activities. To achieve this, experiments have... Prof. Dr. Alberto J. Castro-Tirado |
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27/11/2014 - 13:30
Energetic transients as a part of time domain astronomy in TMT era Study of energetic cosmic explosions as a part of time domain astronomyis one of the key areas that could be pursued with upcoming Giant segmented optical-IR telescopes with a very large photon collecting area applying cutting edge technology. Existing 8-10m class telescopes have been helpful to improve our knowledge about Core-Collapse Supernovae, Gamma-ray Bursts and nature of their progenitors and explosion... S. B. Pandey |
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24/11/2014 - 13:30
First results from SDSS IV - MaNGA Large spectroscopic surveys of nearby galaxies (like the Sloan Digital Sky Survey) have shaped our understanding of galaxy evolution. However, to gain insight into the processes shaping the various galactic sub-components, a three-dimensional view (giving access to both spatial and spectral information) is necessary. In recent years, integral field spectroscopy (IFS) surveys of the nearby Universe (Sauron, CALIFA, Sami) are filling in this... Francesco Belfiore |
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20/11/2014 - 13:00
An ALMA view on the compact obscured nuclei of luminous IR galaxies Until recently, the study of the molecular interstellar medium of galaxies has been mostly focused on a few, relatively abundant, molecular species. Recent attempts at modeling the molecular emission of active galaxies have shown that standard high-density tracers do not provide univocal results and are not able to discriminate between different relevant environments (e.g., star-formation vs AGN). Spectral lines surveys allow us to explore... Francesco Costagliola |