H1517+656 is an unusual source, even for a BL Lac object. It is one of the most luminous BL Lac objects known, with extreme emission properties at radio...
Halo concentrations in the standard Λ cold dark matter cosmology
We study the concentration of dark matter haloes and its evolution in N-body simulations of the standard Λ cold dark matter (ΛCDM) cosmology. The results...
We discuss the possibility that the extended structures, lacking young stars, routinely found in dwarf irregular galaxies (dIrr) are a consequence of a...
Harassment origin for kinematic substructures in dwarf elliptical galaxies?
We have run high resolution N-body models simulating the encounter of a dwarf galaxy with a bright elliptical galaxy. The dwarf absorbs orbital angular momentum...
HARMONI view of the host galaxies of active galactic nuclei around cosmic noon. Resolved stellar morpho-kinematics and the M<SUB>BH</SUB> − σ<SUB>⋆</SUB> relation
Context. The formation and evolution of galaxies appear linked to the growth of supermassive black holes, as evidenced by empirical scaling relations in nearby...
Have we seen all the galaxies that comprise the cosmic infrared background at 250 μm ≤ λ ≤ 500 μm?
The cosmic infrared background (CIB) provides a fundamental observational constraint on the star formation history of galaxies over cosmic history. We estimate...
Heavy-element yields and abundances of asymptotic giant branch models with a Small Magellanic Cloud metallicity
We present new theoretical stellar yields and surface abundances for asymptotic giant branch (AGB) models with a metallicity appropriate for stars in the Small...
HELP project - a dreamed-of multiwavelength dataset for SED fitting: The influence of used models for the main physical properties of galaxies
The Herschel Extragalactic Legacy Project (HELP) focuses to publish an astronomical multiwavelength catalogue of millions of objects over 1300 deg 2 of the...
HELP: a catalogue of 170 million objects, selected at 0.36-4.5 μm, from 1270 deg<SUP>2</SUP> of prime extragalactic fields
We present an optical to near-infrared (NIR) selected astronomical catalogue covering 1270 deg 2. This is the first attempt to systematically combine data from...