IPHAS (the INT/WTC Photometric Ha Survey of the Northern Galactic Plane, www.iphas.org) is a survey carried out, in H-α, r and i filters, with the Wide Field Camera on the Isaac Newton Telescope in La Palma. Besides the photometric survey, the IPHAS collaboration is conducting follow up spectroscopic observations of selected emission line objects

In the last years thoughtful quantitative analyses of extragalactic blue massive stars have shown not only that these studies are doable even at large distances (e.g. ˜2 Mpc away), but also essential for a better understanding of host galaxies and stellar evolution, in environments with different metallicities. Carrying out a systematic analysis is

We present an analysis of Planck satellite data on the Coma cluster observed via the Sunyaev-Zeldovich effect. Thanks to its great sensitivity, Planck is able, for the first time, to detect SZ emission up to r ≈ 3 × R500. We test previously proposed spherically symmetric models for the pressure distribution in clusters against the azimuthally

Using precise full-sky observations from Planck, and applying several methods of component separation, we identify and characterise the emission from the Galactic "haze" at microwave wavelengths. The haze is a distinct component of diffuse Galactic emission, roughly centered on the Galactic centre, and extends to | b | ~ 35-50° in Galactic latitude

Aims: Our aim is to obtain more information about the physical nature of B-type asteroids and extend previous work by studying their physical properties as derived from fitting an asteroid thermal model to their NASA's Wide-field Infrared Survey Explorer (WISE) data. We also examine the Pallas collisional family, a B-type family with a moderately

In a previous paper (part I), the mathematical properties of the cosmic microwave background radiation (CMBR) power spectrum which presents oscillations were discussed. Here, we discuss the physical interpretation: a power spectrum with oscillations is a rather normal characteristic expected from any fluid with clouds of overdensities that emit