Search Publications
Volatile exposures on the 67P/Churyumov-Gerasimenko nucleus
Fulle, M.; Fornasier, S.; Ciarniello, M. +2 more
Aims: We present the most extensive catalog of exposures of volatiles on the 67P/Churyumov-Gerasimenko nucleus generated from observations acquired with the Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) on board the Rosetta mission. We investigate the volatile exposure distribution across the nucleus, their size distribu…
The edge-on protoplanetary disk HH 48 NE. I. Modeling the geometry and stellar parameters
Rocha, W. R. M.; Dartois, E.; McClure, M. K. +11 more
Context. Observations of edge-on disks are an important tool for constraining general protoplanetary disk properties that cannot be determined in any other way. However, most radiative transfer models cannot simultaneously reproduce the spectral energy distributions (SEDs) and resolved scattered light and submillimeter observations of these system…
Absence of nuclear polycyclic aromatic hydrocarbon emission from a compact starburst: The case of the type-2 quasar Mrk 477
Rigopoulou, D.; Tadhunter, C. N.; Acosta-Pulido, J. A. +11 more
Mrk 477 is the closest type-2 quasar, at a distance of 163 Mpc. This makes it an ideal laboratory for studying the interplay between nuclear activity and star formation with a great level of detail and signal-to-noise. In this Letter we present new mid-infrared (mid-IR) imaging and spectroscopic data with an angular resolution of 0.4″ (∼300 pc) ob…
Refined parameters of the HD 22946 planetary system and the true orbital period of planet d★
Alonso, R.; Deleuil, M.; Erikson, A. +85 more
Context. Multi-planet systems are important sources of information regarding the evolution of planets. However, the long-period planets in these systems often escape detection. These objects in particular may retain more of their primordial characteristics compared to close-in counterparts because of their increased distance from the host star. HD…
The GAPS programme at TNG. XLVIII. The unusual formation history of V1298 Tau
del Burgo, C.; Béjar, V. J. S.; Marzari, F. +33 more
Context. Observational data from space- and ground-based campaigns have revealed that the 10-30 Ma old V1298Tau star hosts a compact and massive system of four planets. Mass estimates are available for the two outer giant planets and point to unexpectedly high densities for their young ages.
Aims: We investigate the formation of these two out…
The miniJPAS survey. Cluster and galaxy group detections with AMICO
Finoguenov, A.; Diego, J. M.; Zitrin, A. +32 more
Context. Samples of galaxy clusters allow us to better understand the physics at play in galaxy formation and to constrain cosmological models once the mass, position (for clustering studies), and redshift are known. In this context, large optical datasets play a crucial role.
Aims: We investigate the capabilities of the Javalambre-Physics of…
Did the Milky Way just light up? The recent star formation history of the Galactic disc
Rix, Hans-Walter; Zari, Eleonora; Frankel, Neige
We map the stellar age distribution (≲1 Gyr) across a 6 kpc × 6 kpc area of the Galactic disc in order to constrain our Galaxy's recent star formation history. Our modelling draws on a sample that encompasses all presumed disc O-, B-, and A-type stars (∼500 000 sources) with G < 16. To be less sensitive to reddening, we did not forward-model th…
The ALMA view of MP Mus (PDS 66): A protoplanetary disk with no visible gaps down to 4 au scales
Duchêne, G.; Dent, W. R. F.; de Gregorio-Monsalvo, I. +12 more
Aims: We aim to characterize the protoplanetary disk around the nearby (d ~ 100 pc), young solar analog MP Mus (PDS 66) and to reveal any signs of planets or ongoing planet formation in the system.
Methods: We present new ALMA observations of MP Mus at 0.89 mm, 1.3 mm, and 2.2 mm with angular resolutions of ~1″, 0.05″, and 0.25″, respect…
Kinematic differences between multiple populations in Galactic globular clusters
Pechetti, Renuka; Weilbacher, Peter M.; Krajnović, Davor +7 more
Aims: The formation process of multiple populations in globular clusters is still up for debate. These populations are characterized by different light-element abundances. Kinematic differences between the populations are particularly interesting in this respect because they allow us to distinguish between single-epoch formation scenarios and…
Solar flare hard X-rays from the anchor points of an eruptive filament
Volpara, Anna; Massa, Paolo; Krucker, Säm +7 more
Context. We present an analysis of a GOES M1.8 flare with excellent observational coverage in UV, extreme-UV (EUV), and X-ray, including observations from the Interface Region Imaging Spectrograph (IRIS), from the Solar Dynamics Observatory (SDO) with the Atmospheric Imaging Assembly (AIA), from the Hinode/EUV Imaging Spectrometer (EIS), from the …