Search Publications
Missions
Journals
Publication Years
The final SDSS-IV/SPIDERS X-ray point source spectroscopic catalogue
Georgakakis, A.; Salvato, M.; Buchner, J. +15 more
Aims: We look to provide a detailed description of the SPectroscopic IDentification of ERosita Sources (SPIDERS) survey, an SDSS-IV programme aimed at obtaining spectroscopic classification and redshift measurements for complete samples of sufficiently bright X-ray sources.
Methods: We describe the SPIDERS X-ray Point Source Spectroscopi…
Case study of multi-temperature coronal jets for emerging flux MHD models
Nóbrega-Siverio, Daniel; Aulanier, Guillaume; Schmieder, Brigitte +4 more
Context. Hot coronal jets are a basic observed feature of the solar atmosphere whose physical origin is still actively debated.
Aims: We study six recurrent jets that occurred in active region NOAA 12644 on April 4, 2017. They are observed in all the hot filters of AIA as well as cool surges in IRIS slit-jaw high spatial and temporal resoluti…
A nearby recent supernova that ejected the runaway star ζ Oph, the pulsar PSR B1706-16, and 60Fe found on Earth
Neuhäuser, R.; Hambaryan, V. V.; Gießler, F.
The detection of ∼1.5-3.2 Myr old 60Fe on Earth indicates recent nearby core-collapse supernovae. For supernovae in multiple stars, the primary stars may become neutron stars, while former companions may become unbound and become runaway stars. We wrote software for tracing back the space motion of runaway and neutron stars to young ass…
TOI-1235 b: A Keystone Super-Earth for Testing Radius Valley Emergence Models around Early M Dwarfs
López-Morales, Mercedes; Latham, David W.; Esquerdo, Gilbert A. +85 more
Small planets on close-in orbits tend to exhibit envelope mass fractions of either effectively zero or up to a few percent depending on their size and orbital period. Models of thermally driven atmospheric mass loss and of terrestrial planet formation in a gas-poor environment make distinct predictions regarding the location of this rocky/nonrocky…
White dwarf pollution by hydrated planetary remnants: hydrogen and metals in WD J204713.76-125908.9
Hollands, Mark; Raddi, Roberto; Gänsicke, Boris T. +9 more
WD J204713.76-125908.9 is a new addition to the small class of white dwarfs with helium-dominated photospheres that exhibit strong Balmer absorption lines and atmospheric metal pollution. The exceptional abundances of hydrogen observed in these stars may be the result of accretion of water-rich rocky bodies. We obtained far-ultraviolet and optical…
The Gaia-ESO survey: 3D NLTE abundances in the open cluster NGC 2420 suggest atomic diffusion and turbulent mixing are at the origin of chemical abundance variations
Hansen, Camilla Juul; Serenelli, Aldo; Bergemann, Maria +10 more
Context. Atomic diffusion and mixing processes in stellar interiors influence the structure and the surface composition of stars. Some of these processes cannot yet be modelled from the first principles, and they require calibrations. This limits their applicability in stellar models used for studies of stellar populations and Galactic evolution. …
The hunt for pulsating ultraluminous X-ray sources
Fabian, A. C.; Roberts, T. P.; Lansbury, G. B. +4 more
Motivated by the recent discoveries that six ultraluminous X-ray sources (ULXs) are powered by highly super-Eddington X-ray pulsars, we searched for additional pulsating ULX (PULX) candidates by identifying sources that exhibit long-term flux variability of at least an order of magnitude (a common feature seen in the six known PULXs, which may pot…
Reproducing the Universe: a comparison between the EAGLE simulations and the nearby DustPedia galaxy sample
Mosenkov, Aleksandr V.; Meidt, Sharon E.; De Looze, Ilse +17 more
We compare the spectral energy distributions (SEDs) and inferred physical properties for simulated and observed galaxies at low redshift. We exploit UV-submillimetre mock fluxes of ∼7000 z = 0 galaxies from the EAGLE suite of cosmological simulations, derived using the radiative transfer code skirt. We compare these to ∼800 observed galaxies in th…
The Fornax Deep Survey with VST. IX. Catalog of sources in the FDS area with an example study for globular clusters and background galaxies
van de Ven, Glenn; Mieske, Steffen; Hilker, Michael +18 more
Context. A possible pathway for understanding the events and the mechanisms involved in galaxy formation and evolution is an in-depth investigation of the galactic and inter-galactic fossil sub-structures with long dynamical timescales: stars in the field and in stellar clusters.
Aims: This paper continues the Fornax Deep Survey (FDS) series.…
Hard X-ray cataclysmic variables
Mukai, K.; de Martino, D.; Masetti, N. +2 more
Among hard X-ray Galactic sources detected with the Swift and INTEGRAL surveys, those discovered as accreting white dwarf binaries have surprisingly boosted in number in the recent years. The majority are identified as magnetic Cataclysmic Variables of the Intermediate Polar type, suggesting this subclass as an important constituent of the Galacti…