Search Publications
Forward fitting STIX visibilities
Volpara, Anna; Massa, Paolo; Krucker, Säm +6 more
Aims: We seek to determine to what extent the problem of forward fitting visibilities measured by the Spectrometer/Telescope Imaging X-rays (STIX) on board Solar Orbiter becomes more challenging with respect to the same problem in the case of previous hard X-ray solar imaging missions. In addition, we aim to identify an effective optimization…
HI-H2 transition: Exploring the role of the magnetic field. A case study toward the Ursa Major cirrus
Blinov, D.; Panopoulou, G. V.; Gong, Y. +6 more
Context. Atomic gas in the diffuse interstellar medium (ISM) is organized in filamentary structures. These structures usually host cold and dense molecular clumps. The Galactic magnetic field is considered to play an important role in the formation of these clumps.
Aims: Our goal is to explore the role of the magnetic field in the HI
XXL-HSC: Link between AGN activity and star formation in the early Universe (z ⩾ 3.5)
Paltani, S.; Pierre, M.; Vignali, C. +11 more
In this work, our aim is to investigate the star formation rate (SFR) of the host galaxies of active galactic nuclei (AGNs) in the early Universe. To this end, we constructed a sample of 149 luminous (L2 − 10 keV > 1044 erg s−1) X-ray AGNs at z ≥ 3.5 selected in three fields with different depths and observed ar…
Gaia-ESO Survey: Role of magnetic activity and starspots on pre-main-sequence lithium evolution
Gilmore, G.; Montes, D.; de Laverny, P. +24 more
Context. It is now well-known that pre-main-sequence models with inflated radii should be taken into account to simultaneously reproduce the colour-magnitude diagram and the lithium depletion pattern observed in young open star clusters.
Aims: We tested a new set of pre-main-sequence models that include radius inflation due to the presence of…
Linking a universal gas density profile to the core-excised X-ray luminosity in galaxy clusters up to z ∼ 1.1
Arnaud, M.; Pratt, G. W.; Maughan, B. J. +1 more
We investigate the regularity of galaxy cluster gas density profiles and the link to the relation between core-excised luminosity, LXc, and mass from the YX proxy, MYX, for 93 objects selected through their Sunyaev-Zeldovich effect (SZE) signal. The sample spans a mass range of M500 = [0.5−20]…
Influence of grain growth on CO2 ice spectroscopic profiles. Modelling for dense cores and disks
Ysard, N.; Dartois, E.; Noble, J. A. +2 more
Context. Interstellar dust grain growth in dense clouds and protoplanetary disks, even when moderate, affects the observed interstellar ice profiles as soon as a significant fraction of dust grains are in the size range close to the wave vector at the considered wavelength. The continuum baseline correction made prior to analysing ice profiles inf…
TOI-1468: A system of two transiting planets, a super-Earth and a mini-Neptune, on opposite sides of the radius valley
Nagel, E.; Amado, P. J.; Caballero, J. A. +67 more
We report the discovery and characterization of two small transiting planets orbiting the bright M3.0V star TOI-1468 (LSPM J0106+1913), whose transit signals were detected in the photometric time series in three sectors of the TESS mission. We confirm the planetary nature of both of them using precise radial velocity measurements from the CARMENES…
Multifilter photometry of Solar System objects from the SkyMapper Southern Survey
Wolf, C.; Carry, B.; Onken, C. A. +3 more
Context. The populations of small bodies of the Solar System (asteroids, comets, and Kuiper Belt objects) are used to constrain the origin and evolution of the Solar System. Their orbital distribution and composition distribution are both required to track the dynamical pathway from their formation regions to their current locations.
Aims: We…
Velocity structure of the 50 pc long NGC 6334 filamentary cloud. Hints of multiple compressions and their impact on the cloud properties
Arzoumanian, Doris; Inutsuka, Shu-ichiro; André, Philippe +8 more
Context. The interstellar medium is observed to be organized in filamentary structures, and in neutral (H I) and ionized (H II) bubbles. The expanding nature of these bubbles shapes the surrounding medium and possibly plays a role in the formation and evolution of the interstellar filaments. The impact of the expansion of these bubbles on the inte…
Radio interferometric imaging of RS Oph bipolar ejecta for the 2021 nova outburst
Munari, U.; Giroletti, M.; Williams, D. R. A. +5 more
The recurrent nova and symbiotic binary RS Oph erupted again in August 2021 for its eighth known outburst. We observed RS Oph 34 days after the outburst at 5 GHz with the European VLBI Network (EVN). The radio image is elongated over the east-west direction for a total extension of about 90 mas (or about 240 AU at the Gaia DR3 distance d = 2.68