We describe an ongoing effort to validate the estimated atmospheric parameters (Teff, log g, [Fe/H]) obtained from SDSS spectroscopy (R = 2000) and ugriz...

We propose to improve the calibration of the Wind momentum - Luminosity Relationship of hot stars at solar metallicity by adding new objects with well...

The ISO mission has shown the importance of establishing a reliable spectrophotometric calibration over the range of wavelengths covered by its multiple...

The ISOPHOT Interactive Analysis (PIA) software was conceived primarily as a tool to be used by the instrument team for the calibration of ISOPHOT@. This is one...

The Calar Alto Large Integral Field Area Survey (CALIFA) is a recently started survey with the main aims at observing a statistically well-defined sample of ˜...

A detailed study of the spiral galaxy UGC9837 is carried out based on the IFU spectroscopic data from the pilot survey of the Calar Alto Legacy Field Survey...

We present here the Calar Alto Legacy Integral Field spectroscopy Area survey (CALIFA). CALIFA is large collaboration comprising more than 50 astronomers of 8...

The pyramids of Egypt, notably those of the 4th Dinasty as Giza, have always be considered an unmistikable part of human world heritage as the only surviving...

Long duration gamma ray bursts (GRB's) have been identified as originating in type II SNa explosions, produced during the late stage evolution of massive stars...