Search Publications
Supernova Shocks in Molecular Clouds: Shocks Driven into Dense Cores in IC 443 and 3C 391
Tram, Le Ngoc; Reach, William T.; Godard, Benjamin +3 more
Supernova shocks into dense molecular cores in IC 443 (clumps B, C, and G) and 3C 391 were observed using the Stratospheric Observatory for Infrared Astronomy and complemented by archival data from the Herschel Space Observatory. The pure rotational transitions 0–0 S(1) and S(5) of H2, and the ground-state 110–101 …
MARSIS data as a new constraint for the orbit of Phobos
Orosei, R.; Lainey, V.; Cicchetti, A. +3 more
Context. The orbit of Phobos is currently known with a 1σ precision of 300 m, mostly directed along its track. Most previous determinations were made with the help of the Super-Resolution Channel (SRC) channel of the HRSC camera on board Mars Express (MEX). The Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) on board MEX crosse…
A Targeted Search for Variable Gravitationally Lensed Quasars
Schlegel, David J.; Huang, Xiaosheng; Palmese, Antonella +4 more
We present a pipeline to identify photometric variability within strong gravitationally lensing candidates, in the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys. In our first paper, we laid out our pipeline and presented seven new gravitationally lensed supernovae candidates in a retrospective search. In this companion paper, we appl…
Chemical abundances in nearby Sun-like stars and the history of the Milky Way disc
Gondoin, P.
Context. The properties of nearby stars bear the imprint of the formation and evolution of the Milky Way (MW). Reconstructing its history requires the determination of precise ages for large samples of stars over long periods. Aims. The present study aims to address the evolution of the MW disc in the region where the Sun and nearby Sun-like stars…
Horizontal branch structure, age, and chemical composition for very metal-poor extragalactic globular clusters
Sharina, M. E.; Kniazev, A. Y.; Shimansky, V. V. +2 more
This paper presents the results of analysing the integrated light (IL) low-resolution spectra of globular clusters (GCs) in the M31 and Centaurus A groups of galaxies. The sample consists of eight very metal-poor GCs ($\rm [Fe/H]\le -2$ dex) with high signal-to-noise ratio spectra acquired with the telescopes: the 6-m SAO RAS (BTA), the Southern A…
A Spatial Uniformity Check of Gaia DR3 Photometry and BP/RP Spectra
Huang, Bowen; Yuan, Haibo; Xiao, Kai
Gaia DR3 photometry and Blue Photometer (BP) and Red Photometer (RP) spectra have been widely used as reference in photometric calibrations. In this work, we check the spatial uniformity of Gaia DR3 photometry and BP/RP spectra by comparing the BP, RP, and G-band photometry with the synthetic ones from the BP/RP spectra. The discrepancies have a s…
Sigmoid Eruption Associated with the X9.3 Flare from AR 12673 Drives the Gradual Solar Energetic Particle Event on 2017 September 6
Brooks, David H.; Yardley, Stephanie L.
Large gradual solar energetic particle (SEP) events can pose a radiation risk to crewed spaceflight and a significant threat to near-Earth satellites; however, the origin of the SEP seed particle population, and how these particles are released, accelerated and transported into the heliosphere are not well understood. We analyze NOAA active region…
Foreground Dust Properties toward the Cluster NGC 7380
Hoang, Thiem; Ganesh, Shashikiran; Medhi, Biman J. +4 more
Using starlight polarization, we present the properties of foreground dust toward cluster NGC 7380 embedded in H II region Sh 2-142. Observations of starlight polarization are carried out in four filters using an imaging polarimeter equipped with a 104 cm ARIES telescope. Polarization vectors of stars are aligned along the Galactic magnetic field.…
Stellar substructures in the Galactic disc and halo: Properties, origins, and evolution
Deepak
Spatial, kinematic, and orbital properties, along with ages and chemical compositions of the thin disc, thick disc, and various stellar substructures in the halo, are studied based on data from the LAMOST and Gaia surveys. The star formation in the Galactic thin and thick disc, with peak metallicities of ‑ 0.20 and ‑ 0.45 dex, is found to have pea…
Erratum: "Inferences from Surface Brightness Fluctuations of Zwicky 3146 via the Sunyaev–Zel'dovich Effect and X-Ray Observations" (2023, ApJ, 951, 41)
Mroczkowski, Tony; Kraft, Ralph; Devlin, Mark +16 more