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SOFIA/FORCAST Galactic Center Source Catalog
Morris, Mark R.; Longmore, Steven N.; Mills, Elisabeth A. C. +12 more
The central regions of the Milky Way constitute a unique laboratory for a wide swath of astrophysical studies; consequently, the inner ∼400 pc have been the target of numerous large surveys at all accessible wavelengths. In this paper, we present a catalog of sources at 25 and 37 µm located within all of the regions observed with the SOFIA/F…
3D structure of the Milky Way out to 10 kpc from the Sun: Catalogue of large molecular clouds in the Galactic Plane
Henning, Thomas; Beuther, Henrik; Miville-Deschênes, Marc-Antoine +4 more
Understanding the 3D structure of the Milky Way is a crucial step in deriving properties of the star-forming regions, as well as the Galaxy as a whole. We present a novel 3D map of the Milky Way plane that extends to 10 kpc distance from the Sun. We leverage the wealth of information in the near-infrared dataset of the Sloan Digital Sky Survey's A…
Cluster Formation in a Filamentary Cloud: The Case of the Stellar Cluster NGC 2316
Sharma, Saurabh; Panwar, Neelam; Verma, Aayushi +7 more
We present a multiwavelength analysis of the star cluster NGC 2316 and its surroundings. We estimated the physical parameters of the NGC 2316 cluster, including its shape (elongated), size (R cluster = 0.4 pc), distance (1.3 ± 0.3 kpc), and minimum reddening (A V = 1.55 mag). We discovered two massive stars (B2.0V-B1.5V, ag…
Solar wind entry into Mercury's magnetosphere: Simulation results for the second swingby of BepiColombo
Narita, Y.; Motschmann, U.; Exner, W. +7 more
Context. We use a global 3D hybrid plasma model to investigate the interaction between Mercury's magnetosphere and the solar wind for the second BepiColombo swingby, evaluate magnetospheric regions, and study the typical energy profile of protons.
Aims: The objective of this study is to gain a better understanding of solar wind entry and anal…
Return to the Forgotten Ultraluminous X-Ray Source: A Broadband NICER+NuSTAR Study of NGC 4190 ULX-1
Fürst, Felix; Walton, Dominic J.; Stern, Daniel +7 more
We observed the nearby and relatively understudied ultraluminous X-ray source (ULX) NGC 4190 ULX-1 jointly with Neutron Star Interior Composition Explorer (NICER) and NuSTAR to investigate its broadband spectrum, timing properties, and spectral variation over time. We found NGC 4190 ULX-1 to have a hard spectrum characterized by two thermal compon…
Sufficiency of near-surface water ice as a driver of dust activity on comets: Rethinking the old enigma
Küppers, M.; Thomas, N.; Hartogh, P. +6 more
Context. Nearly all contemporary theoretical research on cometary dust activity relies on models depicting heat transfer and sublimation products within the near-surface porous layer. Gas flow exerts a pressure drag to the crust agglomerates, counteracting weak gravity and the tensile strength of that layer. Our interpretation of data from the Ros…
Near-Earth Object Observations using Synthetic Tracking
Zhai, Chengxing; Shao, Michael; Choi, Philip +5 more
Synthetic tracking (ST) has emerged as a potent technique for observing fast-moving near-Earth objects (NEOs), offering enhanced detection sensitivity and astrometric accuracy by avoiding trailing loss. This approach also empowers small telescopes to use prolonged integration times to achieve high sensitivity for NEO surveys and follow-up observat…
Identifying Coronal Sources of L1 Solar Wind Disturbances Using the Fisk Heliospheric Magnetic Field and Potential Field Extrapolations during Three Solar Minima
Régnier, S.; Steyn, P. J.; Johnson, D. +1 more
The solar minima between solar cycles 22–23, 23–24, and 24–25 are the best observed minima on record. In situ solar wind and interplanetary magnetic field measurements by the Wind and ACE spacecraft at L1 with 1 hr cadence are explored using wavelet analyses for the most quiescent year during each minimum. Times of local peaks in periodicities are…
Time-dependent Hinode/EIS Atlas of a Coronal Mass Ejection Containing Cool Material
Landi, E.; Manchester, W. B.; Wraback, E. M.
We report the first time-dependent spectral atlas of a coronal mass ejection (CME) observed by the Hinode/Extreme Ultraviolet Imaging Spectrometer (EIS). EIS observed the Cartwheel CME on 2008 April 9 at 09:30–10:00 UT in its full wavelength range and captured the bright core containing prominence material as it passed across the slit field of vie…
Overview Results of JWST Observations of Star-forming Clusters in the Extreme Outer Galaxy
Kobayashi, Naoto; Koch, Patrick M.; Lau, Ryan M. +4 more
The extreme outer Galaxy (EOG), which we define as the region of the Milky Way with a galactocentric radius of more than 18 kpc, provides an excellent opportunity to study star formation in an environment significantly different from that in the solar neighborhood because of its lower metallicity and lower gas density. We carried out near- and mid…