A Possible Polarization Mechanism of EUV Coronal Lines
The alignment generated in the ground level of Fe X by scattering in the coronal red line λ6374, can be efficiently transferred by collisions to upper levels...
A possible water ice cloud in Jupiter's stratosphere
Jupiter's atmosphere has been sounded in transmission from UV to IR, as if it were a transiting exoplanet by observing one of its satellites, Ganymede, while...
GX 339-4 is a low mass X-ray binary (LMXB) that has been extensively studied since its discovery. All four X-ray states typically seen in X-ray binaries (XRBs)...
A precise new method to correcting temperature in stellar atmospheres
Calculations of energy balance in model stellar atmospheres for cold and moderately cold stars show that the overall energy gained or lost at the Lyman...
A precise, deep determination of the substellar mass function in the open cluster IC 2391
The formation mechanism of brown dwarfs (BDs) and its relation to star and planet formation remains an open issue. A careful determination of the substellar...
A Preliminary Budget for the Ionizing Photons in HII Regions of M51
The purpose of this work is to quantify the ionizing photon budget in the HII regions, deriving the fraction of the Lyman continuum (Lyc) absorbed by dust or...