An investigation of the diffuse ionized gas (DIG) and its underlying physical processes is the focal point of this study. We aim to survey the prevalence, morphology, distribution, and luminosity of the DIG as well as its variations with galaxy morphology.

The ISO ground-based preparatory programme working group (ISO-GBPPwg) was set the goal in 1990 to characterise accurately in the infrared some 400 stars covering the whole sky. Telescopes in Chile, Hawaii and the Canary Islands were used to obtain J, H, K, and L photometry for all of these stars and, for the brightest ones, spectroscopy and/or N

We are studying a sample of spiral galaxies which host nuclear starbursts. Our aim is first to detect supergalactic winds (SGWs) and second to establish the conditions needed for the onset of the supergalactic wind phase. In this contribution we present preliminary work on the galaxy NGC 4631. We analyze Fabry--Perot observations (TAURUS) taken at

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In this paper, we study the circumgalactic environment of LINER host galaxies, in a sample of 166 objects drawn from a Multifrequency Catalogue of LINERs by Carrillo et.1999). The aim of our work is to compare the environment of different types of LINERs, therefore we subdivided our sample in three groups: LINERs type, type, and transition objects

We present B,V photometric data of the Carina dwarf Spheroidal (dSph) galaxy, collected with the Mosaic Camera (36×36 arcmin2) available at the 4m CTIO Blanco telescope. We discuss different reduction strategies and in particular the PSF extraction and internal accuracy reached by our measurements. We discuss a new deep Color-Magnitude Diagram (CMD