Search Publications
The dominant role of mergers in the size evolution of massive early-type galaxies since z ~ 1
Kneib, J. -P.; Aussel, H.; Cimatti, A. +60 more
Aims: The role of galaxy mergers in massive galaxy evolution, and in particular to mass assembly and size growth, remains an open question. In this paper we measure the merger fraction and rate, both minor and major, of massive early-type galaxies (M ⋆ ≥ 1011 M⊙) in the COSMOS field, and study their role in m…
Observations of Herbig Ae/Be stars with Herschel/PACS. The atomic and molecular contents of their protoplanetary discs
Pinte, C.; Ménard, F.; Dent, W. R. F. +15 more
We observed a sample of 20 representative Herbig Ae/Be stars and 5 A-type debris discs with PACS onboard Herschel, as part of the GAS in Protoplanetary Systems (GASPS) project. The observations were done in spectroscopic mode, and cover the far-infrared lines of [O i], [C ii], CO, CH+, H2O, and OH. We have a [O i] 63 µm…
Dust temperature and CO → H2 conversion factor variations in the SFR-M∗ plane
Berta, S.; Magnelli, B.; Nordon, R. +15 more
Deep Herschel PACS/SPIRE imaging and 12CO(2-1) line luminosities from the IRAM Plateau de Bure Interferometer are combined for a sample of 17 galaxies at z > 1 from the GOODS-N field. The sample includes galaxies both on and above the main sequence (MS) traced by star-forming galaxies in the SFR-M∗ plane. The far-infrared …
A tidal disruption-like X-ray flare from the quiescent galaxy SDSS J120136.02+300305.5
Read, A. M.; Esquej, P.; Komossa, S. +4 more
Aims: The study of tidal disruption flares from galactic nuclei has historically been hampered by a lack of high quality spectral observations taken around the peak of the outburst. Here we introduce the first results from a program designed to identify tidal disruption events at their peak by making near-real-time comparisons of the flux see…
Galactic cold cores. III. General cloud properties
Bernard, J. -P.; Falgarone, E.; Juvela, M. +15 more
Context. In the project galactic cold cores we are carrying out Herschel photometric observations of cold regions of the interstellar clouds as previously identified with the Planck satellite. The aim of the project is to derive the physical properties of the population of cold clumps and to study its connection to ongoing and future star formatio…
A bright z = 5.2 lensed submillimeter galaxy in the field of Abell 773. HLSJ091828.6+514223
Smail, I.; Kneib, J. -P.; Smith, G. P. +20 more
During our Herschel Lensing Survey (HLS) of massive galaxy clusters, we have discovered an exceptionally bright source behind the z = 0.22 cluster Abell 773, which appears to be a strongly lensed submillimeter galaxy (SMG) at z = 5.2429. This source is unusual compared to most other lensed sources discovered by Herschel so far, because of its high…
The Pipe Nebula as seen with Herschel: formation of filamentary structures by large-scale compression?
Hill, T.; White, G. J.; Roussel, H. +20 more
A growing body of evidence indicates that the formation of filaments in interstellar clouds is a key component of the star formation process. In this paper, we present new Herschel-PACS and SPIRE observations of the B59 and Stem regions in the Pipe Nebula complex, revealing a rich, organized network of filaments. The asymmetric column density prof…
The evolving slope of the stellar mass function at 0.6 ≤ z < 4.5 from deep WFC3 data
Fiore, F.; Castellano, M.; Pentericci, L. +12 more
We used Early Release Science (ERS) observations taken with the Wide Field Camera 3 (WFC3) in the GOODS-S field to study the galaxy stellar mass function (GSMF) at 0.6 ≤ z < 4.5. Deep WFC3 near-IR data (for Y as faint as 27.3, J and H as faint as 27.4 AB mag at 5σ), as well as deep KS (as faint as 25.5 at 5σ) Hawk-I band data, provid…
Molecular abundances in the inner layers of IRC +10216
Cernicharo, J.; Daniel, F.; Kahane, C. +3 more
Context. The inner layers of circumstellar envelopes around asymptotic giant branch stars are sites where a variety of processes such as thermochemical equilibrium, shocks induced by the stellar pulsation, and condensation of dust grains determine the chemical composition of the material that is expelled into the outer envelope layers and, ultimat…
The IRX-β relation on subgalactic scales in star-forming galaxies of the Herschel Reference Survey
Ciesla, L.; Buat, V.; Boquien, M. +13 more
Aims: It is still not understood why star-forming galaxies deviate from the ultraviolet colour-attenuation relation of starburst galaxies. Previous work and models hint that the role of the shape of the attenuation curve and the age of stellar populations play an important role. In this paper we aim at understanding the fundamental reasons fo…