News

This section includes scientific and technological news from the IAC and its Observatories, as well as press releases on scientific and technological results, astronomical events, educational projects, outreach activities and institutional events.

  • NOAO da el visto bueno para que el proyecto BigBoss use 500 noches de observación en el telescopio Mayall, en Arizona, con el objetivo de elaborar el mapa más detallado del firmamento e investigar la historia de la expansión del universo y de la energía oscura
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  • HST image of the Butterfly nebula obtained by the authors on 1997. Red is Halpha+[NII], green is [OIII].
    The Butterfly Nebula (Minkowski 2-9) is an outstanding example of a highly collimated outflow from an evolved star. The formation of these extreme nebular geometries -i.e. how the (quasi)spherical symmetry that characterizes all the evolution of a solar-like star is broken when its envelope is ejected-  is one of the most debated and controversial topics in the study of the late stages of stellar evolution. Minkowski 2-9 gives us clear hints of what it might going on. This hourglass-shaped nebula is extraordinary in several aspects, but its  outstanding characteristic is undoubtedly its
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  • Ratio between total infrared and NUV luminosities against total  infrared luminosity for star-forming GALEX-LAEs. Right vertical axis  (dust attenuation) was built by using the calibration of  Buat et al. (2005). Yellow dots are data of nearby galaxies ta
    One remaining open question regarding the physical properties of  Lyaemitters (LAEs) is their dust content and its evolution  with redshift. The variety of results is large and with those reported  by now is difficult to establish clear relations between dust, other  fundamental parameters of galaxies (star-formation rate, metallicity  or age) and redshift. In this Letter, we report Herschel  PACS-100mm, PACS-160mm and Spitzer MIPS-24mm  detections of a sample of spectroscopically GALEX-selected LAEs at  z~0.3 and~1.0. Five out of ten and one out of two LAEs are detected in, at least, one
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  • Caption of the figure: Herschel PACS 70, 100, and 160 μm images (top) and SPIRE 250, 350, and 500 μm maps (bottom). North is up and East is to the left. The 11 kpc diameter ring is resolved up to 250 μm.
    We report far-infrared (FIR) imaging of the Seyfert 2 galaxy NGC 3081 in the range 70- 500 μm, obtained with an unprecedented angular resolution, using the Herschel Space Observatory instruments PACS and SPIRE. The 11 kpc (∼70′′) diameter star-forming ring of the galaxy appears resolved up to 250 μm. We extracted infrared (1.6-500 μm) nuclear fluxes, that is active nucleus-dominated fluxes, and fitted them with clumpy torus models, which successfully reproduce the FIR emission with small torus sizes. Adding the FIR data to the near- and mid-infrared spectral energy distribution (SED) results
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