We present initial results from infrared and visible observations of two comet-asteroid transition objects. 944 Hidalgo is one of the asteroids most likely to be an extinct or dormant comet. Comet 162P/Siding Spring (henceforth 162P), displayed intermittent cometary activity shortly after discovery in late 2004. This comet is the third inner solar

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Context. Thanks to the importance that the star-planet relation has to our understanding of the planet formation process, the precise determination of stellar parameters for the ever increasing number of discovered extra-solar planets is of great relevance. Furthermore, precise stellar parameters are needed to fully characterize the planet

Following the report of the newly detected outburst of the transient XTE J1728-295 (possibly IGR J17285-2922 detected by INTEGRAL) in the RXTE PCA bulge scans (ATel #2823), we requested a Swift ToO observation to follow up the source based on the position given by the RXTE PCA best fit results (ATel #2823). The observation was performed on 2010-08

The SIRTF Wide-Area Infrared Extragalactic Survey (SWIRE), the largest SIRTF Legacy program, is a wide-area imaging survey to trace the evolution of dusty, star-forming galaxies, evolved stellar populations, and active galactic nuclei (AGNs) as a function of environment, from redshifts z~3 to the current epoch. SWIRE will survey seven high-latitude

The theory interest group in the International Virtual Observatory Alliance (IVOA) has the goal of ensuring that theoretical data and services are taken into account in the IVOA standards process. In this poster we present some of the efforts carried out by this group to include evolutionary synthesis models in the VO framework. In particular we