Search Publications
Asteroid taxonomy from cluster analysis of spectrometry and albedo
Carry, B.; Mahlke, M.; Mattei, P. -A.
Context. The classification of the minor bodies of the Solar System based on observables has been continuously developed and iterated over the past 40 yr. While prior iterations followed either the availability of large observational campaigns or new instrumental capabilities opening new observational dimensions, we see the opportunity to improve …
Planet populations inferred from debris discs. Insights from 178 debris systems in the ISPY, LEECH, and LIStEN planet-hunting surveys
Gennaro, Mario; Launhardt, Ralf; Kennedy, Grant M. +11 more
We know little about the outermost exoplanets in planetary systems because our detection methods are insensitive to moderate-mass planets on wide orbits. However, debris discs can probe the outer-planet population because dynamical modelling of observed discs can reveal properties of perturbing planets. We use four sculpting and stirring arguments…
Upper mass-loss limits and clumping in the intermediate and outer wind regions of OB stars
Puls, J.; Najarro, F.; Traficante, A. +4 more
Context. Mass loss is a key parameter throughout the evolution of massive stars, and it determines the feedback with the surrounding interstellar medium. The presence of inhomogeinities in stellar winds (clumping) leads to severe discrepancies not only among different mass-loss rate diagnostics, but also between empirical estimates and theoretical…
The eROSITA Final Equatorial-Depth Survey (eFEDS). A multiwavelength view of WISE mid-infrared galaxies/active galactic nuclei
Nandra, Kirpal; Imanishi, Masatoshi; Wada, Keiichi +21 more
Aims: We investigate the physical properties - such as the stellar mass (M*), star-formation rate, infrared (IR) luminosity (LIR), X-ray luminosity (LX), and hydrogen column density (NH) - of mid-IR (MIR) galaxies and active galactic nuclei (AGN) at z < 4 in the 140 deg2 field observed…
The Close AGN Reference Survey (CARS). No obvious signature of AGN feedback on star formation, but subtle trends
Gaspari, M.; Klessen, R. S.; Combes, F. +17 more
Context. Active galactic nuclei (AGN) are thought to be responsible for the suppression of star formation in massive ∼1010 M⊙ galaxies. While this process is a key feature in numerical simulations of galaxy formation, it has not been unambiguously confirmed in observational studies yet.
Aims: The characterization of the …
New binaries from the SHINE survey
Moutou, C.; Rouan, D.; Avenhaus, H. +68 more
We present the multiple stellar systems observed within the SpHere INfrared survey for Exoplanet (SHINE). SHINE searched for sub-stellar companions to young stars using high contrast imaging. Although stars with known stellar companions within the SPHERE field of view (< 5.5 arcsec) were removed from the original target list, we detected additi…
Water, hydrogen cyanide, carbon monoxide, and dust production from distant comet 29P/Schwassmann-Wachmann 1
Küppers, M.; Hartogh, P.; Lellouch, E. +13 more
Context. 29P/Schwassmann-Wachmann 1 is a distant Centaur/comet, showing persistent CO-driven activity and frequent outbursts.
Aims: We aim to better characterize its gas and dust activity from multiwavelength observations performed during outbursting and quiescent states.
Methods: We used the HIFI, PACS and SPIRE instruments of the Hersc…
TOI-1268b: The youngest hot Saturn-mass transiting exoplanet
Fridlund, M.; Pallé, E.; Guenther, E. W. +41 more
We report the discovery of TOI-1268b, a transiting Saturn-mass planet from the TESS space mission. With an age of less than 1 Gyr, derived from various age indicators, TOI-1268b is the youngest Saturn-mass planet known to date; it contributes to the small sample of well-characterised young planets. It has an orbital period of P = 8.1577080 ± 0.000…
Near-ultraviolet to visible spectroscopy of the Themis and Polana-Eulalia complex families
Tatsumi, E.; Licandro, J.; Popescu, M. +2 more
Context. Spectrophotometry data of asteroids obtained in the 1980s showed that there are large variations in their near-ultraviolet (NUV) reflectance spectra. Reflectance spectra at NUV wavelengths are important because they help detect the presence of hydrated minerals and organics on the asteroid surfaces. However, the NUV wavelength region has …
Characterization of Kepler targets based on medium-resolution LAMOST spectra analyzed with ROTFIT
De Cat, P.; Frasca, A.; Wang, J. X. +7 more
Aims: In this work we present the results of our analysis of 16 300 medium-resolution LAMOST spectra of late-type stars in the Kepler field with the aim of determining the stellar parameters, activity level, lithium atmospheric content, and binarity.
Methods: We have used a version of the code ROTFIT specifically developed for the LAMOST…