Hints of the Star Formation History in a SMC Field
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...
Hipparcos, IUE, and the Stellar Content of the Solar Neighbourhood
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...
Hipparcos, VLA and CCD Observations of CYG OB2 No. 5
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...
HIRES, the High-resolution Spectrograph for the ELT
HIRES will be the high-resolution spectrograph at optical and near-infrared (NIR) wavelengths for ESO's Extremely Large Telescope (ELT). It will consist of...
HIRES: the high resolution spectrograph for the E-ELT
The current instrumentation plan for the E-ELT foresees a High Resolution Spectrograph conventionally indicated as HIRES. Shaped on the study of extra-solar...
I describe how the principles of lexicography have been applied in limited ways in astronomy and look at the revision work under way for the third edition of...
Historical Perspectives on the Concept of Galaxy Size
A brief narrative on how the effective radius and isophotal diameters were accepted as galaxy size measures is presented. Evidence suggests that these...
HJK photometry of 10 barred spirals (Perez-Ramirez+, 2000)
We have obtained NIR broad-band images in the J, H and K bands of 12 barred galaxies that make up our sample, during three observing runs with the 3.6 m Canada...