We analyse the internal dynamics of star-forming H ii regions and their efficiency in interacting with the ISM. We have selected the nearby (4.5 Mpc) spiral...

Line intensities, visual extinction, abundances and ionization hardness parameter for HII regions in two spiral galaxies are presented. The following galaxies...

Complete list of the 376 photometrically calibrated individual HII regions in the spiral galaxy NGC 628. (1 data file).

We consider the compression of multispectral images using Hilbert scanning and adaptive arithmetic coding. The Hilbert scan is a general technique for...

We review briefly the observational understanding of emergence of flux in both the quiet Sun and active regions in the light of first results from the joint...

We present here a part of the project aimed to study the SFH in different parts of the SMC. We observed 12 fields during a four year campaign (2001-2004) using...

In the framework of a long-term program aimed at studying stellar populations in the Carina dSph galaxy, we present the photometric calibration of the two...

The spectroscopic parallaxes in the Hipparcos catalogue can be used to translate absolute stellar fluxes observed at Earth to the fluxes emerging at the stellar...

Cyg OB2 No. 5 (BD+40deg4220; V729 Cyg) is known to be a contact binary system formed by two O-type stars. For this object a 6-cm radio emission has been...