Stars with an external convective envelope have rotation periods that evolve as the square root of the age on the main sequence. This led to empirical...

Rotation plays an important role in the evolution of stars. For decades rotation-age relationships have been used as surface rotation can be measured rather...

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A new theoretical calibration of surface-brightness fluctuations (SBF) for single age, single metallicity stellar populations is presented for the optical and...

We present a virtual substrate for high quality InAs epitaxial layer, obtained via metalorganic vapor-phase epitaxy growth of Sb-assisted InxGa1-xAs metamorphic...

We know that environment has a critical impact on galaxy growth and evolution. What we do not know is when it starts to have an impact and how it does it. I...

We have completed a survey down to R = 15 mag of the stars within a circle of 4 arcmin radius around the nominal center of the remnant of SN 1006, one of the...

We propose to make an albedo and radius survey of 100 cometary nuclei using IRS PU and MIPS imaging. We focus on Jupiter family comets (JFCs), which have...

Stellar Proper Motions can be represented as great circles over the Celestial Sphere. This point of view creates a geometry over the sphere where the study of...