High resolution spectra are used to analyze the galactic kinematics and distribution of a sample of planetary nebulae with [WR] and `wel' central star ([WR]PN and WLPN). The circular and peculiar velocities, (V_pec), of the objects were derived. The results are: (a) [WR]PNe are distributed mainly in the galactic disk and they are more concentrated

We investigate a region of the Galactic plane, between 120° ≤ ℓ ≤ 140° and -1° ≤ b ≤ +4°, and uncover a population of moderately reddened (E(B - V) ˜ 1) classical Be stars within and beyond the Perseus and Outer Arms. 370 candidate emission-line stars (13 ≲ r ≲ 16) selected from the Isaac Newton Telescope Photometric Hα Survey of the Northern

A precision measurement by the Alpha Magnetic Spectrometer on the International Space Station of the positron fraction in primary cosmic rays in the energy range from 0.5 to 350 GeV based on 6.8×106 positron and electron events is presented. The very accurate data show that the positron fraction is steadily increasing from 10 to ˜250GeV, but, from

Observations with the balloon-borne Sunrise/ Imaging Magnetograph eXperiment (IMaX) provide high spatial resolution (roughly 100 km at disk center) measurements of the magnetic field in the photosphere of the quiet Sun. To investigate the magnetic structure of the chromosphere and corona, we extrapolate these photospheric measurements into the

Context. Galaxy mergers are widely discussed as one possible evolution mechanism for lenticular galaxies (S0s), because even minor mergers induce structural changes that are difficult to reconcile with the strong bulge-disk coupling observed in the photometric scaling relations of these galaxies. Aims: We check if the evolution induced onto S0s by

Recent studies have suggested that measurements of the diurnal temperature range (DTR) over Europe may provide evidence of a long-hypothesized link between the cosmic ray (CR) flux and cloud cover. Such propositions are interesting, as previous investigations of CR–cloud links are limited by data issues including long-term reliability and view