IPHAS is a deep, fully photometric H α survey of the northern Galactic plane carried out with the Isaac Newton telescope at La Palma. The IPHAS point source Hα catalogue (complete up to r=19.5 mag) will be a prime source for GTC programs related to important short-lived (and poorly known) stages of evolution: pre- and post-main sequence stars, the

The Local Group Census is a narrowband imaging survey aimed at cataloguing the emission-line populations in the galaxies of the Local Group. Data, which were obtained using the Wide Field Camera of the 2.5m Isaac Newton Telescope, are available to the whole astronomical community, resulting in a valuable imaging resource for follow-up spectroscopy

In this Paper, we describe how we use stellar dynamics information to constrain the shape of the stellar initial mass function (IMF) in a sample of 27 early-type galaxies from the CALIFA survey. We obtain dynamical and stellar mass-to-light ratios, Υdyn and Υ*, over a homogenous aperture of 0.5 Re. We use the constraint Υdyn≥Υ* to test two IMF

We used the m-averaged spectrum technique ("collapsogram") to extract the low-frequency solar p-mode parameters of low- and intermediate-angular degrees (l ≤ 35) in long time series of Global Oscillation Network Group (GONG) and Michelson Doppler Imager (MDI) observations. Rotational splittings and central frequencies have been measured down to

We report experimental oscillator strengths for 28 infrared Fe I transitions, for which no previous experimental values exist. These transitions were selected to address an urgent need for oscillator strengths of lines in the H-band (between 1.4 μm and 1.7 μm) required for the analysis of spectra obtained from the Sloan Digital Sky Survey (SDSS-III

A study of the morphology, kinematics and ionization structure of the infrared (IR) merger NGC5514 is presented. This study is based mainly on INTEGRAL two-dimensional (2D) spectroscopy (obtained at the 4.2-m William Herschel Telescope, WHT), plus optical and near-IR images. Clear evidence of two extranuclear starbursts with young outflows (OFs)