New dispersive elements providing relative high resolution (R=2200) have been recently incorporated in the near infrared spectrograph LIRIS. These elements are...

Gyrochronology is the technique that uses rotation periods to derive stellar ages via age-rotation relations. If properly calibrated, its potential applications...

In supersymmetric scenarios with a low scale of SUSY breaking [sqrt{F}=O(TeV)] the conventional MSSM Higgs sector can be substantially modified, mainly because...

As part of our ongoing Chandra/HST M31 transient program we report on two active sources recently detected in two Chandra ACIS observations. Source 1 We present...

When I was assigned the time in La Palma on the JKT, I gave thanks for my extraordinary luck that the observations were scheduled exactly at the perihelion of...

NRAO 150 -- a compact and bright radio to mm source showing core/jet structure-- has been recently identified as a quasar at redshift 1.52 through a near-IR...

The New Robotic Telescope (NRT) is an international initiative to build a 4-metre robotic telescope. With a primary mirror consisting of 18 segmented hexagonal...

The Trans-atlantic Exoplanet Survey (TrES) attempts to find planetary transits among bright stars. The two telescope used are the 10cm Sleuth Telescope (Palomar...

By combining surface brightness profiles from images taken in the HST/NICMOS F160W and ground-based K bands, we have obtained NIR profiles for a well studied...