We present observations and an interpretative model of the dust environment of the Main-Belt Comet P/2010 F5 (Gibbs). The narrow dust trails observed can be interpreted unequivocally as an impulsive event that took place around 2011 July 1 with an uncertainty of ±10 days, and a duration of less than a day, possibly of the order of a few hours. The
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A Short-duration Event as the Cause of Dust Ejection from Main-Belt Comet P/2012 F5 (Gibbs)Moreno, F. et al.122012
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A software package for the presentation and evaluation of digitized images
A brief description is given of the IMAGE-1 software package for the presentation and evaluation of digitized images at the Osservatorio Astronomico di Trieste. The package makes it possible to draw isophotes in an interactive way and to have an assonometric display of the image studied.
Crivellari, L. et al.Fecha de publicación:
121978 -
A Solar Correlation Tracker Using a Video Motion Estimation Processor
Not Available
Ballesteros, E. et al.Fecha de publicación:
121993 -
A state-of-the-art analysis of the dwarf irregular galaxy NGC 6822
We present a detailed photometric study of the dwarf irregular galaxy NGC 6822 aimed at investigating the properties of its stellar populations and, in particular, the presence of stellar radial gradients. Our goal is to analyse the stellar populations in six fields, which cover the whole bar of this dwarf galaxy. We derived the quantitative star
Aparicio, A. et al.Fecha de publicación:
122014 -
A stronger He II 4686 in the spectrum of the planetary nebula NGC 6572
On a recent spectrogram of the planetary nebula NGC 6572 the authors have found He II 4686 clearly in emission. They review previous descriptions of the spectrum and conclude that He II 4686 is stronger than 20 years ago. They briefly discuss the possible implications of this result, and suggest a careful monitoring of several planetary nebulae.
Mendez, R. H. et al.Fecha de publicación:
121988 -
A Study of Gravitational Lens Chromaticity with the Hubble Space Telescope
We report Hubble Space Telescope observations of six gravitational lenses with the Advanced Camera for Surveys. We measured the flux ratios between the lensed images in seven filters from 8140 Å to 2200 Å. In three of the systems, HE0512-3329, B1600+434, and H1413+117, we were able to construct UV extinction curves partially overlapping the 2175 Å
Muñoz, J. A. et al.Fecha de publicación:
122011