Search Publications
Missions
Journals
Publication Years
The Isotropic Center of NGC 5419-A Core in Formation?
Bender, Ralf; Thomas, Jens; Naab, Thorsten +5 more
With its cored surface brightness profile, the elliptical galaxy NGC 5419 appears as a typical high-mass early-type galaxy (ETG). However, the galaxy hosts two distinct nuclei in its center. We use high-signal MUSE (Multi-unit Spectroscopic Explorer (Based on observations collected at the European Organisation for Astronomical Research in the Sout…
Discovery and Timing of Millisecond Pulsars in the Globular Cluster M5 with FAST and Arecibo
Fu, Xiaoting; Tsai, Chao-Wei; Cadelano, Mario +29 more
We report on a comprehensive multiwavelength study of the pulsars in the globular cluster (GC) M5, including the discovery of M5G, a new compact noneclipsing "black widow" pulsar. Thanks to the analysis of 34 yr of radio data taken with the Five-hundred-meter Aperture Spherical radio Telescope and Arecibo telescopes, we obtained new phase-connecte…
The incidence of AGN in galaxies with different stellar population ages
Salvato, M.; Buchner, J.; Merloni, A. +4 more
It has been argued that recycled gas from stellar mass loss in galaxies might serve as an important fuelling source for black holes (BHs) in their centres. Utilizing spectroscopic samples of galaxies from the Sloan Digital Sky Survey (SDSS) at z = 0-0.35 and the Large Early Galaxy Astrophysics Census (LEGA-C) survey at z = 0.6-1 that have X-ray co…
Vertical wind structure in an X-ray binary revealed by a precessing accretion disk
Fabian, A. C.; Reynolds, C. S.; Pinto, C. +11 more
The accretion of matter onto black holes and neutron stars often leads to the launching of outflows that can greatly affect the environments surrounding the compact object. An important means of studying these winds is through X-ray absorption line spectroscopy, which allows us to probe their properties along a single sightline, but usually provid…
A quantitative description of comet 67P's dust and gas production remains enigmatic
Blum, J.; Gundlach, B.; Attree, N. +2 more
The mechanism of dust emission from a cometary nucleus is still an open question and thermophysical models have problems reproducing outgassing and dust productions rates simultaneously. In this study, we investigate the capabilities of a rather simple thermophysical model to match observations from Rosetta instruments at comet 67P/Churyumov-Geras…
Time Dependence of 50-250 MeV Galactic Cosmic-Ray Protons between Solar Cycles 24 and 25, Measured by the High-energy Particle Detector on board the CSES-01 Satellite
Vitale, V.; Ubertini, P.; Potgieter, M. S. +54 more
Time-dependent energy spectra of galactic cosmic rays (GCRs) carry crucial information regarding their origin and propagation throughout the interstellar environment. When observed at the Earth, after traversing the interplanetary medium, such spectra are heavily affected by the solar wind and the embedded solar magnetic field permeating the inner…
EDEN Survey: Small Transiting Planet Detection Limits and Constraints on the Occurrence Rates of Planets around Late-M Dwarfs within 15 pc
Henning, Thomas; Apai, Dániel; Lin, Chia-Lung +30 more
Earth-sized exoplanets that transit nearby, late-spectral-type red dwarfs will be prime targets for atmospheric characterization in the coming decade. Such systems, however, are difficult to find via widefield transit surveys like Kepler or TESS. Consequently, the presence of such transiting planets is unexplored and the occurrence rates of short-…
Oort Cloud comets discovered far from the Sun
Dones, Luke; Królikowska, Małgorzata
Context. Increasingly, Oort Cloud comets are being discovered at great distances from the Sun and tracked over ever wider ranges of heliocentric distances as observational equipment improves.
Aims: Our goal is to investigate in detail how the original semimajor axis for near-parabolic comets depends on the selected data arc and the assumed fo…
The evolution of HCO+ in molecular clouds using a novel chemical post-processing algorithm
Bigiel, F.; Barnes, A. T.; Walch, S. +4 more
Modelling the chemistry of molecular clouds is critical to accurately simulating their evolution. To reduce computational cost, 3D simulations generally restrict their chemistry to species with strong heating and cooling effects. Time-dependent information about the evolution of other species is therefore often neglected. We address this gap by po…
Trojan Asteroid Satellites, Rings, and Activity
Stern, S. Alan; Weaver, Harold A.; Buie, Marc W. +6 more
The Lucy mission will encounter five Jupiter Trojans during its mission with three of the five already known to be multiple systems. These include a near-equal-mass binary, a small and widely separated satellite, and one intermediate-size satellite system. This chapter reviews the current state of knowledge of Trojan asteroid satellites in the con…