L Quilley

Euclid Quick Data Release (Q1). Quenching precedes bulge formation in dense environments but follows it in the field

Fabrizio Gentile, E. Daddi, D. Elbaz, B. Magnelli et autres

(Abridged) The bimodality between star-forming discs and quiescent spheroids requires the existence of two main processes: the galaxy quenching and the morphological transformation. In this paper, we aim to understand the link between these processes and their relation with the stellar mass …

fr (code pays fourni par la source)

Color dichotomy and gradients in the bulges and disks of EFIGI galaxies along the Hubble sequence

L Quilley, M. D. Lehnert, V. de Lapparent

One of the most outstanding questions in contemporary astrophysics is: What is the significance of galaxy morphology? What physical processes underlier the morphologies we observe and is a galaxy's internal structure driving its evolution (nature) or is it a sign of the …

fr (code pays fourni par la source)

Euclid Quick Data Release (Q1)

C Laigle, C. Gouin, Florian Sarron, L Quilley et autres

Galaxy morphologies and shape orientations are expected to correlate with their large-scale environments, since they grow by accreting matter from the cosmic web and are subject to interactions with other galaxies. We extracted cosmic filaments in projection from the Euclid Quick Data …

fr, au, nl, es, gb, de, it, ch, dk, us, pt, ca, no (code pays fourni par la source)

Euclid : Early Release Observations – Programme overview and pipeline for compact- and diffuse-emission photometry

Jean‐Charles Cuillandre, E. Bertin, M. Bolzonella, H. Bouy et autres

The Euclid Early Release Observations (ERO) showcase Euclid ’s capabilities in advance of its main mission by targeting 17 astronomical objects, including galaxy clusters, nearby galaxies, globular clusters, and star-forming regions. A total of 24 hours of observing time was allocated in …

fr, it, ca, us, de, nl, es, be, gb, pt, br, ch, Afrique du Sud, jp, at, dk, fi (code pays fourni par la source)

Euclid : galaxy morphology and photometry from bulge-disc decomposition of Early Release Observations

L Quilley, V. de Lapparent, M Bolzonella, M Baes et autres

International audience

fr (code pays fourni par la source)

Euclid

Y Mellier, Abdurro Uf, J.A. Acevedo Barroso, A. Achúcarro et autres

The current standard model of cosmology successfully describes a variety of measurements, but the nature of its main ingredients, dark matter and dark energy, remains unknown. Euclid is a medium-class mission in the Cosmic Vision 2015–2025 programme of the European Space Agency …

fr (code pays fourni par la source)

La structure et l'évolution des galaxies par leurs bulbes et disques dans l'Univers proche

L Quilley

Edwin Hubble was the first astronomer to classify galaxies according to their shapes and features. It led to the establishment of the famous Hubble sequence, describing the morphological classes that are ellipticals (E), lenticulars (S0), spirals (Sa to Sm), and irregulars (Im). …

fr (code pays fourni par la source)

The structure and evolution of galaxies via their bulges and disks in the nearby Universe

L Quilley

La structure et l'évolution des galaxies par leurs bulbes et disques dans l'Univers proche L’astronome Edwin Hubble classa les galaxies selon leurs formes, créant ainsi la séquence de Hubble, qui décrit les classes morphologiques des elliptiques (E), des lenticulaires (S0), des spirales …

fr (code pays fourni par la source)

Tailoring galaxies: size-luminosity-surface brightness relations of bulges and disks along the morphological sequence

L Quilley, V. de Lapparent

We measure the scaling relations of the bulges and disks of the EFIGI galaxies in the nearby Universe versus morphology, using bulge and disk decomposition of SDSS gri images with SourceXtractor++. The Kormendy (1977) relation between effective surface brightness and effective radius …