Search Publications
A3COSMOS: Dust mass function and dust mass density at 0.5 < z < 6
Magnelli, B.; Pozzi, F.; Feltre, A. +7 more
Context. Although dust in galaxies represents only a few percent of the total baryonic mass, it plays a crucial role in the physical processes occurring in galaxies. Studying the dust content of galaxies, particularly at high z, is therefore crucial for understanding the link between dust production, obscured star formation, and the build-up of ga…
The most stringent upper limit set on the mass of a central black hole in 47 Tucanae using dynamical models
Dalessandro, E.; Giunchi, E.; Cignoni, M. +3 more
Globular clusters (GCs) have been proposed as promising sites for discovering intermediate-mass black holes (IMBHs), offering the possibility to gain crucial insights into the formation and evolution of these elusive objects. The Galactic GC 47 Tucanae (also known as NGC 104) has been suggested as a potential IMBH host, yet previous studies have y…
TOI-5005 b: A super-Neptune in the savanna near the ridge
Bouchy, F.; Winn, J. N.; Moya, A. +38 more
Context. The Neptunian desert and savanna have recently been found to be separated by a ridge, an overdensity of planets in the period range of ≃3–5 days. These features are thought to be shaped by dynamical and atmospheric processes. However, their roles are not yet well understood. Aims. Our aim was to confirm and characterize the super-Neptune …
A3COSMOS: Measuring the cosmic dust-attenuated star formation rate density at 4 < z < 5
Daddi, Emanuele; Schinnerer, Eva; Oesch, Pascal +14 more
Context. In recent years, conflicting results have provided an uncertain view of the dust-attenuated star-forming properties of z ≳ 4 galaxies.
Aims: To solve this, we need to accurately measure the mean dust-attenuated properties of star-forming galaxies (SFGs) at 4 < z < 5 and therefore constrain the cosmic dust-attenuated star format…
Evolution of the relation between the mass accretion rate and the stellar and disk mass from brown dwarfs to stars
Bayo, A.; Testi, L.; Alcalá, J. M. +7 more
The time evolution of the dependence of the mass accretion rate with the stellar mass and the disk mass represents a fundamental way to understand the evolution of protoplanetary disks and the formation of planets. In this work, we present observations with X-shooter of 26 Class II very low-mass stars (< 0.2 M⊙) and brown dwarfs in t…
Fast supermassive black hole growth in the SPT2349–56 protocluster at z = 4.3
Ivison, R. J.; Lehmer, B. D.; Brandt, W. N. +7 more
Context. Large-scale environment is one of the main physical drivers of galaxy evolution. The densest regions at high redshifts (i.e. z > 2 protoclusters) are gas-rich regions characterised by high star formation activity. The same physical properties that enhance star formation in protoclusters are also thought to boost the growth of supermass…
Evidence of apsidal motion and a possible co-moving companion star detected in the WASP-19 system
Rauer, H.; Gandolfi, D.; Csizmadia, Sz. +5 more
Context. Love numbers measure the reaction of a celestial body to perturbing forces, such as the centrifugal force caused by rotation, or tidal forces resulting from the interaction with a companion body. These parameters are related to the interior density profile. The non-point mass nature of the host star and a planet orbiting around each other…
AMICO-COSMOS galaxy cluster and group catalogue up to z = 2: Sample properties and X-ray counterparts
Finoguenov, A.; Castignani, G.; Moscardini, L. +2 more
Aims: We present the results of a new galaxy cluster search in the COSMOS field obtained using the Adaptive Matched Identifier of Clustered Objects (AMICO). Our aim was to produce a new cluster and group catalogue up to z = 2 by performing an innovative application of AMICO with respect to previous successful applications to wide-field survey…
Gaia FGK benchmark stars: Fundamental Teff and log g of the third version
Casamiquela, L.; Creevey, O. L.; Soubiran, C. +8 more
Context. Large spectroscopic surveys devoted to the study of the Milky Way, including Gaia, use automated pipelines to determine the atmospheric parameters of millions of stars. The Gaia FGK benchmark stars are reference stars with Teff and log 𝑔 derived through fundamental relations, independently of spectroscopy, to be used as anchors…
AGN feedback in the Local Universe: Multiphase outflow of the Seyfert galaxy NGC 5506
Vallini, Livia; Alonso-Herrero, Almudena; Ricci, Claudio +21 more
We present new optical GTC/MEGARA seeing-limited (0.9″) integral-field observations of NGC 5506, together with ALMA observations of the CO(3 − 2) transition at a 0.2″ (∼25 pc) resolution. NGC 5506 is a luminous (bolometric luminosity of ∼1044 erg s−1) nearby (26 Mpc) Seyfert galaxy, part of the Galaxy Activity, Torus, and Out…