Search Publications
Gaia Focused Product Release: Radial velocity time series of long-period variables
Prusti, T.; Mazeh, T.; Zucker, S. +403 more
Context. The third Gaia Data Release (DR3) provided photometric time series of more than 2 million long-period variable (LPV) candidates. Anticipating the publication of full radial-velocity data planned with Data Release 4, this Focused Product Release (FPR) provides radial-velocity time series for a selection of LPV candidates with high-quality …
FU Orionis disk outburst: Evidence for a gravitational instability scenario triggered in a magnetically dead zone
Labadie, L.; Lesur, G.; Monnier, J. D. +10 more
Context. FUors outbursts are a crucial stage of accretion in young stars. However, a complete mechanism at the origin of the outburst still remains missing.
Aims: We aim to constrain the instability mechanism in the star FU Orionis itself by directly probing the size and evolution in time of the outburst region with near-infrared (NIR) interf…
The Close AGN Reference Survey (CARS). A parsec-scale multi-phase outflow in the super-Eddington NLS1 Mrk 1044
Jahnke, K.; Gaspari, M.; Combes, F. +8 more
Context. The interaction between active galactic nuclei (AGNs) and their host galaxies is scarcely resolved. Narrow-line Seyfert 1 (NLS1) galaxies are believed to represent AGN at early stages of their evolution and to allow one to observe feeding and feedback processes at high black hole accretion rates.
Aims: We aim to constrain the propert…
X-ray properties of the white dwarf pulsar eRASSU J191213.9−441044
Marsh, T. R.; Schwope, A.; Pelisoli, I. +5 more
We report X-ray observations of the newly discovered pulsating white dwarf eRASSU J191213.9−441044 with Spectrum Roentgen Gamma and eROSITA (SRG/eROSITA) and XMM-Newton. The new source was discovered during the first eROSITA all-sky survey at a flux level of fX(0.2 − 2.3 keV) = 3.3 × 10−13 erg cm−2 s−1 a…
The first look at narrow-line Seyfert 1 galaxies with eROSITA
Salvato, M.; Buchner, J.; Boller, Th. +6 more
We present the first look at the spectral and timing analysis of narrow-line Seyfert 1 galaxies (NLS1s) with the extended ROentgen Survey with an Imaging Telescope Array (eROSITA) on board the Spectrum-Roentgen-Gamma (SRG) mission. The sample of approximately 1200 NLS1s was obtained via a cross-match between the first eROSITA All-Sky Survey (eRASS…
The SOFIA FEEDBACK [CII] Legacy Survey: Rapid molecular cloud dispersal in RCW 79
Schneider, N.; Zavagno, A.; Tielens, A. G. G. M. +12 more
It has long been discussed whether stellar feedback in the form of winds and/or radiation can shred the nascent molecular cloud, thereby controlling the star formation rate. However, directly probing and quantifying the impact of stellar feedback on the neutral gas of the nascent clouds is challenging. We present an investigation of this impact to…
Recurrent solar density transients in the slow wind observed with the Metis coronagraph
Heinzel, P.; Sasso, C.; Romoli, M. +22 more
Aims We aim to investigate and characterize the morphology and dynamics of small-scale coronal plasma density inhomogeneities detected as brighter, denser features propagating outward through the solar corona in the visible-light images of the Metis coronagraph on board Solar Orbiter on February 22, 2021. Our main focus is on investigating their p…
Asteroseismic age estimate of the open cluster NGC 6866 using Kepler and Gaia
Grundahl, F.; Tailo, M.; Stello, D. +10 more
Context. Asteroseismic investigations of solar-like oscillations in giant stars allow for the derivation of their masses and radii. For members of open clusters, this allows us to obtain an age estimate of the cluster that is expected to be identical to the age estimate given by the colour-magnitude diagram, but independent of the uncertainties th…
A high-resolution study of near-IR diffuse interstellar bands, search for small-scale structure, time variability, and stellar features
Smoker, J. V.; Evans, C. J.; Boffin, H. M. J. +13 more
Context. The diffuse interstellar bands (DIBs) are a set of hundreds of unidentified absorption features that appear almost ubiquitously throughout the interstellar medium. Most DIBs appear at optical wavelengths, but some are in the near-infrared.
Aims: We aim to characterise near-infrared DIBs at high spectral resolving power towards multip…
Recurrent 3He-rich solar energetic particle injections observed by Solar Orbiter at ∼0.5 au
Rodriguez, L.; Rodríguez-Pacheco, J.; Wimmer-Schweingruber, R. F. +8 more
We report Solar Orbiter observations of six recurrent solar energetic particle injections in 2022 March 3−6 at ∼0.5 au. All but one were associated with jets emanating from a plage near a large sunspot in active region 12 957. We saw large jets in injections with high 3He and Fe enrichments and minor jets in injections with no or lower …