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Internal kinematics of Gaia eDR3 wide binaries
Hernandez, X.; Cortés, R. A. M.; Cookson, S.
Using the recent Gaia eDR3 catalogue, we construct a sample of solar neighbourhood isolated wide binaries satisfying a series of strict signal-to-noise data cuts, exclusion of random association criteria, and detailed colour-magnitude diagram selections to minimize the presence of any kinematic contaminating effects having been discussed in the li…
Particles and Photons as Drivers for Particle Release from the Surfaces of the Moon and Mercury
Wurz, P.; Lammer, H.; Galli, A. +13 more
The Moon and Mercury are airless bodies, thus they are directly exposed to the ambient plasma (ions and electrons), to photons mostly from the Sun from infrared range all the way to X-rays, and to meteoroid fluxes. Direct exposure to these exogenic sources has important consequences for the formation and evolution of planetary surfaces, including …
High D/H ratios in water and alkanes in comet 67P/Churyumov-Gerasimenko measured with Rosetta/ROSINA DFMS
Altwegg, K.; Berthelier, J. J.; Fuselier, S. A. +8 more
Context. Isotopic abundances in comets are key to understanding and reconstructing the history and origin of material in the Solar System. Data for deuterium-to-hydrogen (D/H) ratios in water are available for several comets. However, no long-term studies of the D/H ratio in water of a comet during its passage around the Sun have been reported thu…
ALMA Lensing Cluster Survey: ALMA-Herschel Joint Study of Lensed Dusty Star-forming Galaxies across z ≃ 0.5 - 6
Pérez-González, Pablo G.; Koekemoer, Anton M.; Smail, Ian +25 more
We present an ALMA-Herschel joint analysis of sources detected by the ALMA Lensing Cluster Survey (ALCS) at 1.15 mm. Herschel/PACS and SPIRE data at 100-500 µm are deblended for 180 ALMA sources in 33 lensing cluster fields that are detected either securely (141 sources; in our main sample) or tentatively at S/N ≥ 4 with cross-matched HST/Sp…
SN 2018bsz: A Type I superluminous supernova with aspherical circumstellar material
Spyromilio, J.; Gromadzki, M.; Galbany, L. +26 more
We present a spectroscopic analysis of the most nearby Type I superluminous supernova (SLSN-I), SN 2018bsz. The photometric evolution of SN 2018bsz has several surprising features, including an unusual pre-peak plateau and evidence for rapid formation of dust ≳200 d post-peak. We show here that the spectroscopic and polarimetric properties of SN 2…
How much hydrogen is in Type Ib and IIb supernova progenitors?
Arcavi, Iair; Gilkis, Avishai
Core-collapse supernovae showing little or no hydrogen (denoted by Type IIb and Ib, respectively) are the explosions of massive stars that have lost some or most of their outer envelopes. How they lose their mass is unclear, but it likely involves binary interaction. So far, seven progenitors of such supernovae have been identified in pre-explosio…
NuSTAR Observations of 52 Compton-thick Active Galactic Nuclei Selected by the Swift/Burst Alert Telescope All-sky Hard X-Ray Survey
Tanimoto, Atsushi; Ueda, Yoshihiro; Ricci, Claudio +2 more
We present systematic broadband X-ray spectral analysis of 52 Compton-thick ( $24\leqslant \mathrm{log}{N}_{{\rm{H}}}^{\mathrm{LOS}}/{\mathrm{cm}}^{-2}$ ) active galactic nucleus (CTAGN) candidates selected by the Swift/Burst Alert Telescope all-sky hard X-ray survey observed with Chandra, X-ray Multi-Mirror Mission-Newton (XMM-Newton), Swift/X-Ra…
An early transition to magnetic supercriticality in star formation
Li, D.; Heiles, C.; Qian, L. +5 more
Magnetic fields have an important role in the evolution of interstellar medium and star formation1,2. As the only direct probe of interstellar field strength, credible Zeeman measurements remain sparse owing to the lack of suitable Zeeman probes, particularly for cold, molecular gas3. Here we report the detection of a magneti…
Exploring the dependence of hot Jupiter occurrence rates on stellar mass with TESS
Kunimoto, M.; Beleznay, Maya
We present estimates for the occurrence rates of hot Jupiters around dwarf stars based on data from the Transiting Exoplanet Survey Satellite (TESS) Prime Mission. We take 97 hot Jupiters orbiting 198 721 AFG dwarf stars (ranging in mass from 0.8 to $2.3\, {\rm M}_{\odot }$) from an independent search for hot Jupiters using TESS Prime Mission data…
Surface Brightness Profile of Lyman-α Halos out to 320 kpc in HETDEX
Ouchi, Masami; Finkelstein, Steven L.; Schneider, Donald P. +18 more
We present the median-stacked Lyman-α (Lyα) surface brightness profiles of 968 spectroscopically selected Lyα emitting galaxies (LAEs) at redshifts 1.9 < z < 3.5 in the early data of the Hobby-Eberly Telescope Dark Energy Experiment. The selected LAEs are high-confidence Lyα detections with high signal-to-noise ratios observed with good seei…