Concept
Galaxie satellite
Publications associées (217)
Molecular gas in radio galaxies in dense megaparsec-scale environments at z=0.4-2.6
Context. Low luminosity radio galaxies (LLRGs) typically reside in dense megaparsec-scale environments and are often associated with brightest cluster galaxies (BCGs). They are an excellent tool to study the evolution of molecular gas reservoirs in giant e ...
EDP SCIENCES S A2019Preprocessing among the Infalling Galaxy Population of EDisCS Clusters
We present results from a low-resolution spectroscopic survey for 21 galaxy clusters at 0.4 < z < 0.8 selected from the ESO Distant Cluster Survey. We measured spectra using the low-dispersion prism in IMACS on the Magellan Baade telescope and calculate re ...
IOP PUBLISHING LTD2019Dark Energy Survey Year 1 results: constraints on intrinsic alignments and their colour dependence from galaxy clustering and weak lensing
Eduardo Sanchez, Jonathan Andrew Blazek
We perform a joint analysis of intrinsic alignments and cosmology using tomographic weak lensing, galaxy clustering, and galaxy-galaxy lensing measurements from Year 1 (Y1) of the Dark Energy Survey. We define early- and late-type subsamples, which are fou ...
2019Dark Energy Survey Year 1 Results: Tomographic cross-correlations between Dark Energy Survey galaxies and CMB lensing from South Pole Telescope plus Planck
Eduardo Sanchez, Jonathan Andrew Blazek
We measure the cross-correlation between REDMAGIC galaxies selected from the Dark Energy Survey (DES) year 1 data and gravitational lensing of the cosmic microwave background (CMB) reconstructed from South Pole Telescope (SPT) and Planck data over 1289 deg ...
AMER PHYSICAL SOC2019An extragalactic chromosome map: the intermediate-age SMC cluster Lindsay 1
The discovery of star-to-star abundance variations (a.k.a. multiple populations - MPs) within globular clusters (GCs), which are generally not found in the field or in lower mass open clusters, has led to a search for the unique property of GCs that allow ...
OXFORD UNIV PRESS2019Euclid preparation III. Galaxy cluster detection in the wide photometric survey, performance and algorithm selection
Gianluca Castignani, Marina Ricci
Galaxy cluster counts in bins of mass and redshift have been shown to be a competitive probe to test cosmological models. This method requires an efficient blind detection of clusters from surveys with a well-known selection function and robust mass estima ...
EDP Sciences2019Machine-learning Classifiers for Intermediate Redshift Emission-line Galaxies
Jean-Paul Richard Kneib, Johan Comparat, David Schlegel
Classification of intermediate redshift (z = 0.3-0.8) emission line galaxies as star-forming galaxies, composite galaxies, active galactic nuclei (AGNs), or low-ionization nuclear emission regions (LINERs) using optical spectra alone was impossible because ...
IOP PUBLISHING LTD2019Pristine dwarf galaxy survey - I. A detailed photometric and spectroscopic study of the very metal-poor Draco II satellite
Pascale Jablonka, Nicolas Lawrence Etienne Longeard
We present a detailed study of the faint Milky Way satellite Draco II (Dra II) from deep CFHT/MegaCam broad-band g and i photometry and narrow-band metallicity-sensitive CaliK observations, along with follow-up Keck II/DEIMOS multi-object spectroscopy. For ...
OXFORD UNIV PRESS2018Stellar chemo-kinematics of the Cetus dwarf spheroidal galaxy
Context. The great majority of early-type dwarf galaxies, in the Local Group as well as in other galaxy groups, are found in the vicinity of much larger galaxies, making it hard to disentangle the role of internal versus external effects in driving their e ...
EDP SCIENCES S A2018Molecular gas in two companion cluster galaxies at z=1.2
Gianluca Castignani, Anand Stéphane Raichoor
Context. Probing both star formation history and evolution of distant cluster galaxies is essential to evaluate the effect of dense environment on shaping the galaxy properties we observe today. Aims. We investigate the effect of cluster environment on the ...
EDP SCIENCES S A2018