Search Publications
The galactic acceleration scale is imprinted on globular cluster systems of early-type galaxies of most masses and on red and blue globular cluster subpopulations
Hilker, Michael; Richtler, Tom; Renaud, Florent +3 more
Context. Globular clusters (GCs) carry information about the formation histories and gravitational fields of their host galaxies. It was found before that the radial profiles of the volume number density of GCs in GC systems (GCSs) follow broken power laws, while the breaks occur approximately at the a0 radii. These are the radii at whi…
Searching for globular clusters in the inner halo of the Circinus galaxy
Minniti, D.; Gómez, M.; Obasi, C. +3 more
In this study, we search for globular clusters (GCs) in the inner halo of the Circinus galaxy using a combination of observational data. Our data set includes observations from the VISTA Variables in the Vía Láctea Extended Survey (VVVX), optical data from Gaia Release 3 (DR3), and observations from the Dark Energy Camera (DECam). These multiple d…
The radio to GeV picture of PSR B1259-63 during the 2021 periastron passage
van Soelen, B.; Chernyakova, M.; Malyshev, D. +3 more
PSR B1259-63 is a gamma-ray binary system with a radio pulsar orbiting an O9.5Ve star, LS 2883, with a period of ${\sim} 3.4$ yr. Close to the periastron the system is detected at all wavelengths, from radio to the TeV energies. The emission in this time period is believed to originate from the interaction of LS 2883 and pulsar's outflows. The obs…
A Broad Set of Solar and Cosmochemical Data Indicates High C-N-O Abundances for the Solar System
Lunine, Jonathan I.; Glein, Christopher R.; Truong, Ngoc
We examine the role of refractory organics as a major C carrier in the outer protosolar nebula and its implications for the compositions of large Kuiper Belt objects (KBOs) and CI chondrites. By utilizing Rosetta measurements of refractory organics in comet 67P/Churyumov–Gerasimenko, we show that they would make up a large fraction of the protosol…
Observational bias and young massive cluster characterization - II. Can Gaia accurately observe young clusters and associations?
Naylor, Tim; Buckner, Anne S. M.; Rieder, Steven +2 more
Observations of clusters suffer from issues such as completeness, projection effects, resolving individual stars, and extinction. As such, how accurate measurements and conclusions are likely to be? Here, we take cluster simulations (Westerlund2- and Orion-type), synthetically observe them to obtain luminosities, accounting for extinction, and the…
Mind the gap between A2061 and A2067: Unveiling new diffuse, large-scale radio emission
Brunetti, G.; Balboni, M.; Venturi, T. +11 more
Aims. The clusters Abell 2061 and Abell 2067 in the Corona Borealis supercluster have been studied at different radio frequencies and are both known to host diffuse radio emission. The aim of this work is to investigate the radio emission between them, whose presence is suggested by low-resolution observations. Methods. We analysed deep LOw Freque…
Magnetically Aligned Striations in the L914 Filamentary Cloud
Fang, Min; Gong, Yan; Chen, Xuepeng +6 more
We present CO(J = 1–0) multiline observations toward the L914 dark cloud in the vicinity of the Cygnus X region, using the 13.7 m millimeter telescope of the Purple Mountain Observatory. The CO observations reveal in the L914 cloud a long filament with an angular length of ∼3.°6, corresponding to approximately 50 pc at the measured distance of ∼ 7…
Probing the filamentary nature of star formation in the California giant molecular cloud
André, Philippe; Zhang, Guo-Yin; Li, Jin-Zeng +1 more
Context. Recent studies suggest that filamentary structures are representative of the initial conditions of star formation in molecular clouds and support a filament paradigm for star formation, potentially accounting for the origin of the stellar initial mass function (IMF). The detailed, local physical properties of molecular filaments remain po…
Preliminary Discussion on the Current Sheet
Zhang, Jun; Ding, Tao; Fang, Yuan +1 more
The current sheet is a characteristic structure of magnetic energy dissipation during the magnetic reconnection process. So far, the width and depth of the current sheet are still indefinite. Here we investigate 64 current sheets observed by four telescopes from 1999 to 2022, and all of them have been well identified in the previous literature. In…
The Calar Alto Legacy Integral Field Area Survey: Spatial Resolved Properties
Galbany, L.; Sánchez, S. F.; García-Benito, R. +3 more
We present the analysis using the pyPipe3D pipeline for the 895 galaxies that comprises the eCALIFA data release (Sanchez et al. 2023), data with a significantly improved spatial resolution (1.0-1.5"/FWHM). We include a description of (i) the analysis performed by the pipeline, (ii) the adopted datamodel for the derived spatially resolved properti…