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The Spectacular Tidal Tails of Globular Cluster M3 (NGC 5272)
Zhao, Gang; Zhao, Jing-Kun; Yang, Yong +2 more
We provide a detailed analysis of the tidal tails of the globular cluster M3 (NGC 5272). We first discover clear extratidal structures with a slight S shape near the cluster. This inspires us to examine the existence of its long tidal tails. We highlight potential stream stars using the proper motions (PMs) of a model stream combined with the clus…
Gaia Focused Product Release: Asteroid orbital solution. Properties and assessment
Prusti, T.; Mazeh, T.; Zucker, S. +403 more
Context. We report the exploitation of a sample of Solar System observations based on data from the third Gaia Data Release (Gaia DR3) of nearly 157 000 asteroids. It extends the epoch astrometric solution over the time coverage planned for the Gaia DR4, which is not expected before the end of 2025. This data set covers more than one full orbital …
Unbiased CLEAN for STIX in Solar Orbiter
Volpara, Anna; Massa, Paolo; Piana, Michele +3 more
CLEAN is an iterative deconvolution method for radio and hard-X-ray solar imaging. In a specific step of its pipeline, CLEAN requires the convolution between an idealized version of the instrumental point-spread function (PSF), and a map collecting point sources located at positions from where most of the flaring radiation is emitted. This step ha…
Saturn's Seismic Rotation Revisited
Fuller, Jim; Dewberry, Janosz W.; Mankovich, Christopher R.
Normal mode seismology is a promising means of measuring rotation in gas giant interiors, and ring seismology presents a singular opportunity to do so at Saturn. We calculate Saturn's normal modes of oscillation and zonal gravity field, using nonperturbative methods for normal modes in the rigidly rotating approximation, and perturbative methods f…
Simulation of CSST's astrometric capability
Liao, Shi-Long; Qi, Zhao-Xiang; Shao, Li +5 more
Introduction: The China Space Station Telescope (CSST) will enter a low Earth orbit around 2024 and operate for 10 years, with seven of those years devoted to surveying the area of the median-to-high Galactic latitude and median-to-high Ecliptic latitude of the sky. To maximize the scientific output of CSST, it is important to optimize the survey …
A SPectroscopic Survey of Biased Halos in the Reionization Era (ASPIRE): JWST Discovers an Overdensity around a Metal Absorption-selected Galaxy at z 5.5
Chevallard, Jacopo; Hennawi, Joseph F.; Fan, Xiaohui +27 more
The launch of JWST opens a new window for studying the connection between metal-line absorbers and galaxies at the end of the Epoch of Reionization. Previous studies have detected absorber-galaxy pairs in limited quantities through ground-based observations. To enhance our understanding of the relationship between absorbers and their host galaxies…
Quiet-time suprathermal ions in the inner heliosphere during the rising phase of solar cycle 25
Wimmer-Schweingruber, R. F.; Allen, R. C.; Ho, G. C. +3 more
Context. The Solar Orbiter spacecraft made its first close perihelion passes in 2022, reaching 0.32 au on 26 March and 0.29 au on 12 October. Transient activity was relatively low, making it possible to perform measurements of the quiet-time suprathermal ion pool over multi-day periods.
Aims: The inner heliosphere suprathermal ion pool is a s…
Faint [C I](1-0) emission in z ∼ 3.5 radio galaxies
Andreani, P.; Wang, W.; Popping, G. +6 more
We present Atacama Large Millimeter/sub-millimeter Array neutral carbon, [${\rm C\, \small {\rm I}}$](1-0), line observations that probe molecular hydrogen gas (H2) within seven radio galaxies at z = 2.9-4.5 surrounded by extended (≳100 kpc) Ly α nebulae. We extract [${\rm C\, \small {\rm I}}$](1-0) emission from the radio-active galact…
First Detection of CO2 Emission in a Centaur: JWST NIRSpec Observations of 39P/Oterma
Villanueva, G. L.; Faggi, S.; DiSanti, M. A. +9 more
Centaurs are minor solar system bodies with orbits transitioning between those of trans-Neptunian scattered disk objects and Jupiter-family comets (JFCs). 39P/Oterma (39P) is a frequently active centaur that has recently held both centaur and JFC classifications and was observed with the JWST NIRSpec instrument on 2022 July 27 UTC while it was 5.8…
Detection of radio emission from stars via proper-motion searches
Lenc, Emil; Murphy, Tara; Heald, George +4 more
We present a method for identifying radio stellar sources using their proper-motion. We demonstrate this method using the FIRST, VLASS, RACS-low and RACS-mid radio surveys, and astrometric information from Gaia Data Release 3. We find eight stellar radio sources using this method, two of which have not previously been identified in the literature …