Search Publications
White dwarf-open cluster associations based on Gaia DR2
Paunzen, E.; Prišegen, M.; Piecka, M. +2 more
Context. Fundamental parameters and physical processes leading to the formation of white dwarfs (WDs) may be constrained and refined by discovering WDs in open clusters (OCs). Cluster membership can be utilized to establish the precise distances, luminosities, ages, and progenitor masses of such WDs.
Aims: We compile a list of probable WDs th…
Multi-spacecraft study of the solar wind at solar minimum: Dependence on latitude and transient outflows
Fedorov, A.; Eastwood, J. P.; Owens, M. J. +15 more
Context. The recent launches of Parker Solar Probe, Solar Orbiter (SO), and BepiColombo, along with several older spacecraft, have provided the opportunity to study the solar wind at multiple latitudes and distances from the Sun simultaneously.
Aims: We take advantage of this unique spacecraft constellation, along with low solar activity acro…
Online data analysis system of the INTEGRAL telescope
Paltani, S.; Tramacere, A.; Ferrigno, C. +3 more
Context. During more than 17 years of operation in space, the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) telescope has accumulated a large data set that contains records of hard X-ray and soft γ-ray astronomical sources. These data can be reused in the context of multi-wavelength or multi-messenger studies of astronomical sources a…
Solar Orbiter Radio and Plasma Waves - Time Domain Sampler: In-flight performance and first results
Maksimovic, M.; Bale, S. D.; Chust, T. +20 more
Context. The Radio and Plasma Waves (RPW) instrument on board Solar Orbiter has been operating nearly continuously since the launch in February 2020. The Time Domain Sampler (TDS) receiver of the RPW instrument is dedicated to waveform measurements of plasma waves and dust impact signatures in an intermediate frequency range from 0.2 to 200 kHz. <…
Low star formation efficiency due to turbulent adiabatic compression in the Taffy bridge
Braine, J.; Schneider, B.; Vollmer, B. +1 more
The Taffy system (UGC 12914/15) consists of two massive spiral galaxies that had a head-on collision about 20 Myr ago. It represents an ideal laboratory for studying the reaction of the interstellar medium (ISM) to a high-speed (∼1000 km s−1) gas-gas collision. New sensitive, high-resolution (2.7″ or ∼800 pc) CO(1−0) observations of the…
The relation between Lyα absorbers and local galaxy filaments
Richter, P.; Wendt, M.; Bouma, S. J. D.
Context. The intergalactic medium (IGM) is believed to contain the majority of baryons in the universe and to trace the same dark matter structure as galaxies, forming filaments and sheets. Lyα absorbers, which sample the neutral component of the IGM, have been extensively studied at low and high redshift, but the exact relation between Lyα absorp…
Linking ice and gas in the λ Orionis Barnard 35A cloud
Pontoppidan, K. M.; Rocha, W. R. M.; Bjerkeli, P. +5 more
Context. Dust grains play an important role in the synthesis of molecules in the interstellar medium, from the simplest species, such as H2, to complex organic molecules. How some of these solid-state molecules are converted into gas-phase species is still a matter of debate.
Aims: Our aim is to directly compare ice and gas abundan…
New-generation dust emission templates for star-forming galaxies
Boquien, Médéric; Salim, Samir
Context. The infrared (IR) emission of dust heated by stars provides critical information for galaxy evolution studies. Unfortunately, observations are often limited to the mid-IR, making templates a necessity. Previously published templates were based on small samples of luminous galaxies, which are not necessarily representative of normal star-f…
Neglected X-ray discovered polars. III. RX J0154.0-5947, RX J0600.5-2709, RX J0859.1+0537, RX J0953.1+1458, and RX J1002.2-1925
Burwitz, V.; Beuermann, K.; Schwope, A. +2 more
We report results on the ROSAT-discovered noneclipsing short-period polars RX J0154.0-5947, RX J0600.5-2709, RX J0859.1+0537, RX J0953.1+1458, and RX J1002.2-1925 collected over 30 years. We present accurate linear orbital ephemerides that allow a correct phasing of data taken decades apart. Three of the systems show cyclotron and Zeeman lines tha…
Sr and Ba abundances: Comparing machine-learning with star-by-star analyses. High-resolution re-analysis of suspected LAMOST barium stars
Jorissen, A.; Escorza, A.; Van Winckel, H. +6 more
Context. A new large sample of 895 s-process-rich candidates out of 454 180 giant stars surveyed by LAMOST at a low spectral resolution (R ~ 1800) has been reported by Norfolk et al. (2019, MNRAS, 490, 2219; hereafter N19).
Aims: This study is aimed at confirming the s-process enrichment at the higher resolution (R ~ 86 000) offered by the HE…