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A DZ white dwarf with a 30 MG magnetic field
Hermes, J. J.; Hollands, M. A.; Stopkowicz, S. +3 more
Magnetic white dwarfs with field strengths below 10 MG are easy to recognize since the Zeeman splitting of spectral lines appears proportional to the magnetic field strength. For fields ≳100 MG, however, transition wavelengths become chaotic, requiring quantum-chemical predictions of wavelengths and oscillator strengths with a non-perturbative tre…
Carbon Dioxide Retrievals From NOMAD-SO on ESA's ExoMars Trace Gas Orbiter and Temperature Profiles Retrievals With the Hydrostatic Equilibrium Equation: 1. Description of the Method
Aoki, S.; Vandaele, A. C.; Daerden, F. +14 more
The Solar Occultation (SO) channel of the Nadir and Occultation for Mars Discovery (NOMAD) instrument has been scanning the Martian atmosphere for almost 2 Martian years. In this work, we present a subset of the NOMAD SO data measured at the mesosphere at the terminator. From the data set, we investigated 968 vertical profiles of carbon dioxide de…
Investigating the Magnetic Structure of Interplanetary Coronal Mass Ejections Using Simultaneous Multispacecraft In Situ Measurements
Farrugia, C. J.; Galvin, A. B.; Davies, E. E. +5 more
In situ measurements from spacecraft typically provide a time series at a single location through coronal mass ejections (CMEs), and they have been one of the main methods to investigate CMEs. The CME properties derived from these in situ measurements are affected by temporal changes that occur as the CME passes over the spacecraft, such as radial…
Charging of free-falling test masses in orbit due to cosmic rays: Results from LISA Pathfinder
Mendes, L.; Russano, G.; Nofrarias, M. +72 more
A comprehensive summary of the measurements made to characterize test-mass charging due to the space environment during the LISA Pathfinder mission is presented. Measurements of the residual charge of the test mass after release by the grabbing and positioning mechanism show that the initial charge of the test masses was negative after all release…
Electron Heating Scales in Collisionless Shocks Measured by MMS
Johlander, Andreas; Khotyaintsev, Yuri V.; Dimmock, Andrew P. +2 more
Electron heating at collisionless shocks in space is a combination of adiabatic heating due to large-scale electric and magnetic fields and non-adiabatic scattering by high-frequency fluctuations. The scales at which heating happens hints to what physical processes are taking place. In this letter, we study electron heating scales with data from t…
Splitting the lentils: Clues to galaxy/black hole coevolution from the discovery of offset relations for non-dusty versus dusty (wet-merger-built) lenticular galaxies in the Mbh-M*,spheroid and Mbh-M*,galaxy diagrams
Graham, Alister W.
This work advances the (galaxy morphology)-dependent (black hole mass, Mbh)-(spheroid/galaxy stellar mass, M*) scaling relations by introducing 'dust bins' for lenticular (S0) galaxies. Doing so has led to the discovery of Mbh-M*,sph and Mbh-M*,gal relations for dusty S0 galaxies - …
The Magellanic Edges Survey - IV. Complex tidal debris in the SMC outskirts
Da Costa, G. S.; Koposov, S. E.; Mackey, A. D. +2 more
We use data from the Magellanic Edges Survey (MagES) in combination with Gaia EDR3 to study the extreme southern outskirts of the Small Magellanic Cloud (SMC), focussing on a field at the eastern end of a long arm-like structure which wraps around the southern periphery of the Large Magellanic Cloud (LMC). Unlike the remainder of this structure, w…
A radio-jet-driven outflow in the Seyfert 2 galaxy NGC 2110?
Rigopoulou, D.; Hönig, S. F.; Villar-Martín, M. +16 more
We present a spatially resolved study of the ionized gas in the central 2 kpc of the Seyfert 2 galaxy NGC 2110 and investigate the role of its moderate-luminosity radio jet (kinetic radio power of Pjet = 2.3 × 1043 erg s−1). We used new optical integral-field observations taken with the MEGARA spectrograph at the G…
The VLT MUSE NFM view of outflows and externally photoevaporating discs near the orion bar★
Bally, John; Reiter, Megan; Manara, Carlo F. +10 more
We present Very Large Telescope/Multi-Unit Spectroscopic Explorer Narrow Field Mode observations of a pair of disc-bearing young stellar objects towards the Orion Bar: 203-504 and 203-506. Both of these discs are subject to external photoevaporation, where winds are launched from their outer regions due to environmental irradiation. Intriguingly, …
Catalog of Planetary Nebulae Detected by GALEX and Corollary Optical Surveys
Bianchi, L.; Gómez-Muñoz, M. A.; Manchado, A.
Planetary nebulae (PNs) consist of an ionized envelope surrounding a hot central star (CSPN) that emits mostly at ultraviolet (UV) wavelengths. UV observations, therefore, provide important information on both the CSPN and the nebula. We have matched the PNs in the Hong Kong/Australian Astronomical Observatory/Strasbourg Hα catalog with the Galaxy…