Search Publications
Magnitude and direction of the local interstellar magnetic field inferred from Voyager 1 and 2 interstellar data and global heliospheric model
Izmodenov, Vladislav V.; Alexashov, Dmitry B.
In this Letter, we provide constraints on the direction and magnitude of the pristine (i.e., unperturbed by the interaction with the Sun) local interstellar magnetic field. The constraints are based on analysis of the interstellar magnetic field components at the heliopause measured by magnetometer instruments on board Voyager 1 and 2 spacecraft. …
The Tarantula Massive Binary Monitoring. III. Atmosphere analysis of double-lined spectroscopic systems
Lennon, D. J.; de Mink, S. E.; de Koter, A. +17 more
Context. Accurate stellar parameters of individual objects in binary systems are essential to constrain the effects of binarity on stellar evolution. These parameters serve as a prerequisite to probing existing and future theoretical evolutionary models.
Aims: We aim to derive the atmospheric parameters of the 31 double-lined spectroscopic bi…
Optical phase curve of the ultra-hot Jupiter WASP-121b
Heng, K.; Ehrenreich, D.; Lendl, M. +28 more
We present the analysis of TESS optical photometry of WASP-121b, which reveals the phase curve of this transiting ultra-hot Jupiter. Its hotspot is located at the sub-stellar point, showing inefficient heat transport from the dayside (2870 ± 50 K) to the nightside (<2500 K at 3σ) at the altitudes probed by TESS. The TESS eclipse depth, measured…
The RGB tip of galactic globular clusters and the revision of the axion-electron coupling bound
Dalessandro, E.; Ferraro, F. R.; Pallanca, C. +5 more
Context. The production of neutrinos by plasma oscillations is the most important energy sink process operating in the degenerate core of low-mass red giant stars. This process counterbalances the release of energy induced by nuclear reactions and gravitational contraction, and determines the luminosity attained by a star at the moment of the He i…
Galactic halo size in the light of recent AMS-02 data
Maurin, D.; Salati, P.; Génolini, Y. +6 more
Context. The vertical diffusive halo size of the Galaxy, L, is a key parameter for dark matter indirect searches. It can be better determined thanks to recent AMS-02 data.
Aims: We set constraints on L from Be/B and 10Be/Be data, and we performed a consistency check with positron data. We detail the dependence of Be/B and 10
AGN-driven outflows and the AGN feedback efficiency in young radio galaxies
Morganti, R.; Holt, J.; Tadhunter, C. +2 more
Active galactic nuclei (AGN) feedback operated by the expansion of radio jets can play a crucial role in driving gaseous outflows on galaxy scales. Galaxies hosting young radio AGN, whose jets are in the first phases of expansion through the surrounding interstellar medium (ISM), are the ideal targets to probe the energetic significance of this me…
Is there Na I in the atmosphere of HD 209458b?. Effect of the centre-to-limb variation and Rossiter-McLaughlin effect in transmission spectroscopy studies
Alonso-Floriano, F. J.; Sánchez-López, A.; López-Puertas, M. +22 more
HD 209458b was the first transiting planet discovered, and the first for which an atmosphere, in particular Na I, was detected. With time, it has become one of the most frequently studied planets, with a large diversity of atmospheric studies using low- and high-resolution spectroscopy. Here, we present transit spectroscopy observations of HD 2094…
Possible evidence of ongoing planet formation in AB Aurigae. A showcase of the SPHERE/ALMA synergy
Pantin, E.; Milli, J.; Boccaletti, A. +8 more
Context. Planet formation is expected to take place in the first million years of a planetary system through various processes, which remain to be tested through observations.
Aims: With the recent discovery, using ALMA, of two gaseous spiral arms inside the ∼120 au cavity and connected to dusty spirals, the famous protoplanetary disk around …
Catalogue of new Herbig Ae/Be and classical Be stars. A machine learning approach to Gaia DR2
Mendigutía, I.; Mowlavi, N.; Baines, D. +4 more
Context. The intermediate-mass pre-main sequence Herbig Ae/Be stars are key to understanding the differences in formation mechanisms between low- and high-mass stars. The study of the general properties of these objects is hampered by the lack of a well-defined, homogeneous sample, and because few and mostly serendipitously discovered sources are …
The ISM scaling relations in DustPedia late-type galaxies: A benchmark study for the Local Universe
Bianchi, S.; Fritz, J.; Madden, S. C. +18 more
Aims: The purpose of this work is the characterization of the main scaling relations between all of the interstellar medium (ISM) components, namely dust, atomic, molecular, and total gas, and gas-phase metallicity, as well as other galaxy properties, such as stellar mass (Mstar) and galaxy morphology, for late-type galaxies in the…