Search Publications
The VLA-COSMOS 3 GHz Large Project: The infrared-radio correlation of star-forming galaxies and AGN to z ≲ 6
Bondi, M.; Berta, S.; Magnelli, B. +23 more
We examine the behaviour of the infrared-radio correlation (IRRC) over the range 0 <z ≲ 6 using new, highly sensitive 3 GHz observations with the Karl G. Jansky Very Large Array (VLA) and infrared data from the Herschel Space Observatory in the 2 deg2 COSMOS field. We distinguish between objects where emission is believed to arise so…
The extragalactic background light revisited and the cosmic photon-photon opacity
Franceschini, Alberto; Rodighiero, Giulia
Context. In addition to its relevant astrophysical and cosmological significance, the extragalactic background light (EBL) is a fundamental source of opacity for cosmic high energy photons, as well as a limitation for the propagation of high-energy particles in the Universe.
Aims: We review our previously published determinations of the EBL p…
The impact of clustering and angular resolution on far-infrared and millimeter continuum observations
Daddi, Emanuele; Béthermin, Matthieu; Wu, Hao-Yi +7 more
Follow-up observations at high-angular resolution of bright submillimeter galaxies selected from deep extragalactic surveys have shown that the single-dish sources are comprised of a blend of several galaxies. Consequently, number counts derived from low- and high-angular-resolution observations are in tension. This demonstrates the importance of …
The VLA-COSMOS 3 GHz Large Project: Multiwavelength counterparts and the composition of the faint radio population
Bondi, M.; Berta, S.; Ilbert, O. +18 more
We study the composition of the faint radio population selected from the Karl G. Jansky Very Large Array Cosmic Evolution Survey (VLA-COSMOS) 3 GHz Large Project, which is a radio continuum survey performed at 10 cm wavelength. The survey covers a 2.6 square degree area with a mean rms of 2.3 µJy/beam, cataloging 10 830 sources above 5σ, and…
The VLA-COSMOS 3 GHz Large Project: AGN and host-galaxy properties out to z ≲ 6
Bondi, M.; Berta, S.; Ilbert, O. +29 more
We explore the multiwavelength properties of AGN host galaxies for different classes of radio-selected AGN out to z ≲ 6 via a multiwavelength analysis of about 7700 radio sources in the COSMOS field. The sources were selected with the Very Large Array (VLA) at 3 GHz (10 cm) within the VLA-COSMOS 3 GHz Large Project, and cross-matched with multiwav…
Molecular gas in the Herschel-selected strongly lensed submillimeter galaxies at z 2-4 as probed by multi-J CO lines
Smail, I.; Omont, A.; Cooray, A. +18 more
We present the IRAM-30 m observations of multiple-J CO (Jup mostly from 3 up to 8) and [C I](3P2 → 3P1) ([C I](2-1) hereafter) line emission in a sample of redshift ~2-4 submillimeter galaxies (SMGs). These SMGs are selected among the brightest-lensed galaxies discovered in the Herschel-Astrop…
The Galactic Center Molecular Cloud Survey. I. A steep linewidth-size relation and suppression of star formation
Lu, Xing; Menten, Karl M.; Zhang, Qizhou +4 more
The central molecular zone (CMZ; inner 200 pc) of the Milky Way is a star formation (SF) environment with very extreme physical properties. Exploration of SF in this region is important because (I) this region allows us to test models of star formation under exceptional conditions; and (II) the CMZ clouds might be suitable to serve as templates to…
Radial distribution of dust, stars, gas, and star-formation rate in DustPedia face-on galaxies
Bianchi, S.; Fritz, J.; Madden, S. C. +18 more
Aims: The purpose of this work is the characterization of the radial distribution of dust, stars, gas, and star-formation rate (SFR) in a sub-sample of 18 face-on spiral galaxies extracted from the DustPedia sample.
Methods: This study is performed by exploiting the multi-wavelength DustPedia database, from ultraviolet (UV) to sub-millim…
Resolving the fragmentation of high line-mass filaments with ALMA: the integral shaped filament in Orion A
Henning, T.; Megeath, S. T.; Beuther, H. +5 more
We study the fragmentation of the nearest high line-mass filament, the integral shaped filament (ISF, line-mass 400 M⊙ pc-1) in the Orion A molecular cloud. We have observed a 1.6 pc long section of the ISF with the Atacama Large Millimetre/submillimeter Array (ALMA) at 3 mm continuum emission, at a resolution of 3″ (1200 AU)…
Testing the universality of the star-formation efficiency in dense molecular gas
Braine, J.; André, Ph.; Könyves, V. +7 more
Context. Recent studies with, for example, Spitzer and Herschel have suggested that star formation in dense molecular gas may be governed by essentially the same "law" in Galactic clouds and external galaxies. This conclusion remains controversial, however, in large part because different tracers have been used to probe the mass of dense molecular…