Search Publications
Probabilistic and progressive deblended far-infrared and sub-millimetre point source catalogues. I. Methodology and first application in the COSMOS field
Jarvis, Matt J.; Pearson, William J.; Vaccari, Mattia +12 more
Context. Single-dish far-infrared (far-IR) and sub-millimetre (sub-mm) point source catalogues and their connections with galaxy catalogues at other wavelengths are of paramount importance to studying galaxy evolution. However, due to the large mismatch in spatial resolution, cross-matching galaxies detected at different wavelengths is not straigh…
High-resolution imaging of the evolving bipolar outflows in symbiotic novae: The case of the RS Ophiuchi 2021 nova outburst
Munari, U.; Giroletti, M.; Williams, D. R. A. +6 more
Context. The recurrent and symbiotic nova RS Ophiuchi (RS Oph) underwent a new outburst phase during August 2021, about 15 years after the last event that occurred in 2006. This outburst represents the first nova event ever detected at very high energies (VHE, E > 100 GeV), and a whole set of coordinated multiwavelength observations were trigge…
Confirmation of the presence of a CRSF in the NICER spectrum of X 1822-371
Sanna, A.; Di Salvo, T.; Burderi, L. +6 more
Aims: X 1822-371 is an eclipsing binary system with a period close to 5.57 h and an orbital period derivative Ṗorb of 1.42(3) × 10−10 s s−1. The extremely high value of its Ṗorb is compatible with a super-Eddington mass transfer rate from the companion star and, consequently, an intrinsic luminosity…
Coronal and chromospheric activity of Teegarden's star
Schmitt, J. H. M. M.; Czesla, S.; Reiners, A. +11 more
Teegarden's star is a late-type M-dwarf planet host, typically showing only rather low levels of activity. In this paper we present an extensive characterisation of this activity at photospheric, chromospheric, and coronal levels. We specifically investigated TESS observations of Teegarden's star, which showed two very large flares with an estimat…
Extreme magnetic field modulus variability of the Bp star HD 57372
Ilyin, I.; Hubrig, S.; Järvinen, S. P. +2 more
Context. In chemically peculiar Ap/Bp stars with large-scale organised magnetic fields of simple centred dipole configuration, the ratio between the maximum and the minimum of the mean magnetic field modulus is on the order of 1.25. Values of two or more are observed only for very few Ap/Bp stars and are indicative of a very unusual magnetic field…
The disk of the eruptive protostar V900 Mon. A MATISSE/VLTI and MUSE/VLT perspective
Lykou, F.; Ábrahám, P.; Chen, L. +8 more
Aims: In this work, we study the silicate dust content in the disk of one of the youngest eruptive stars, V900 Mon, at the highest angular resolution, probing down to the inner 10 au of said disk, and study the historical evolution of the system, traced in part by a newly discovered emission clump.
Methods: We performed high angular reso…
Dynamical traceback age of the Octans young stellar association
Miret-Roig, N.; Bouy, H.; Barrado, D. +2 more
Context. Octans is one of the most distant (d ∼ 150 pc) young stellar associations of the solar neighbourhood, and it has not yet been sufficiently explored. Its age is still poorly constrained in the literature and requires further investigation.
Aims: We take advantage of the state-of-the-art astrometry delivered by the third data release o…
The debiased morphological transformations of galaxies since z = 3 in CANDELS
Demarco, R.; Cerulo, P.; Salvador, D. +3 more
Context. Morphological quantitative measurements and visual-like classifications are susceptible to biases arising from the expansion of the Universe. One of these biases is the effect of cosmological surface brightness dimming (CSBD): the measured surface brightness of a galaxy decays with redshift as (1 + z)−4. This effect might lead …
Three short-period Earth-sized planets around M dwarfs discovered by TESS: TOI-5720 b, TOI-6008 b, and TOI-6086 b
Tamura, M.; Pallé, E.; Hirano, T. +53 more
One of the main goals of the NASA Transiting Exoplanet Survey Satellite (TESS) mission is the discovery of Earth-like planets around nearby M-dwarf stars. We present the discovery and validation of three new short-period Earth-sized planets orbiting nearby M dwarfs: TOI-5720 b, TOI-6008 b, and TOI-6086 b. We combined TESS data, ground-based multic…
First detection of CF+ in the Large Magellanic Cloud
Gong, Yan; Menten, Karl M.; Jacob, Arshia M. +2 more
Context. CF+ has been established as a valuable diagnostic tool for investigating photodissociation regions (PDRs) and fluorine abundances in the Milky Way. However, its role in extragalactic environments remains largely uncharted.
Aims: Our objective is to explore the significance of CF+ in the Large Magellanic Cloud (L…