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Hubble Frontier Field photometric catalogues of Abell 370 and RXC J2248.7-4431: multiwavelength photometry, photometric redshifts, and stellar properties
Santini, Paola; Castellano, Marco; Fontana, Adriano +16 more
This paper presents multiwavelength photometric catalogues of the last two Hubble Frontier Fields (HFFs), the massive galaxy clusters Abell 370 and RXC J2248.7-4431. The photometry ranges from imaging performed on the Hubble Space Telescope to ground-based Very Large Telescope and Spitzer/Infrared Array Camera, in collaboration with the ASTRODEEP …
A Search for Gravitationally Lensed Gamma-Ray Bursts in the Data of the Interplanetary Network and Konus-Wind
Zhang, X.; Hurley, K.; von Kienlin, A. +19 more
We examine a sample of 2301 gamma-ray bursts, detected by Konus-Wind in the triggered mode between 1994 and 2017 and localized by the interplanetary network (IPN), for evidence of gravitational lensing. We utilize all the available gamma-ray burst (GRB) data: time histories, localizations, and energy spectra. We employ common IPN techniques to fin…
The double blue-straggler sequence in NGC 2173: an artifact of field contamination
Dalessandro, E.; Bastian, N.; Ferraro, F. R. +3 more
Here we discuss the case of the double blue straggler star (BSS) sequence recently detected in the young stellar cluster NGC 2173 in the Large Magellanic Cloud (LMC) by Li et al. (2018, ApJ, 856, 25). In order to investigate this feature we made use of two Hubble Space Telescope (HST) sets of observations, one (the same one used by Li et al.) prob…
PEXO: A Global Modeling Framework for Nanosecond Timing, Microarcsecond Astrometry, and µm s-1 Radial Velocities
Butler, R. Paul; Anglada-Escudé, Guillem; Feng, Fabo +4 more
The ability to make independent detections of the signatures of exoplanets with complementary telescopes and instruments brings a new potential for robust identification of exoplanets and precision characterization. We introduce PEXO, a package for Precise EXOplanetology to facilitate the efficient modeling of timing, astrometry, and radial veloci…
The imprint of X-ray photoevaporation of planet-forming discs on the orbital distribution of giant planets
Preibisch, Thomas; Monsch, Kristina; Ercolano, Barbara +2 more
High-energy radiation from a planet host star can have strong influence on the final habitability of a system through several mechanisms. In this context we have constructed a catalogue containing the X-ray luminosities, as well as basic stellar and planetary properties of all known stars hosting giant planets (> 0.1 MJ) that have be…
High-precision analysis of binary stars with planets. I. Searching for condensation temperature trends in the HD 106515 system
Jofré, E.; Jaque Arancibia, M.; Saffe, C. +4 more
Aims: We explore for the first time the probable chemical signature of planet formation in the remarkable binary system HD 106515. Star A hosts a massive long-period planet with 9 MJup detected by radial velocity, while there is no planet detected at the B star. We also refine stellar and planetary parameters by using non-solar-sca…
Earth atmospheric loss through the plasma mantle and its dependence on solar wind parameters
Nilsson, Hans; Dandouras, Iannis; Slapak, Rikard +3 more
Atmospheric loss and ion outflow play an important role in the magnetospheric dynamics and in the evolution of the atmosphere on geological timescales—an evolution which is also dependent on the solar activity. In this paper, we investigate the total
The Masses of Supernova Remnant Progenitors in M83
Williams, Benjamin F.; Blair, William P.; Dolphin, Andrew +5 more
We determine the ages of the young, resolved stellar populations at the locations of 237 optically identified supernova remnants in M83. These age distributions put constraints on the progenitor masses of the supernovae that produced 199 of the remnants. The other 38 show no evidence for having a young progenitor and are therefore good Type Ia SNR…
High-resolution Thermal Infrared Imaging of 3200 Phaethon
Jewitt, David; Li, Jing; Asmus, Daniel +1 more
We present thermal infrared observations of the active asteroid (and Geminid meteoroid stream parent) 3200 Phaethon using the Very Large Telescope. The images, at 10.7 µm wavelength, were taken with Phaethon at its closest approach to Earth (separation of 0.07 au) in 2017 December, at a linear resolution of about 14 km. We probe the Hill sph…
Deep long asymmetric occultation in EPIC 204376071
Vanderburg, A.; Rappaport, S.; Bouma, L. G. +15 more
We have discovered a young M star of mass 0.16 M⊙ and radius 0.63 R⊙, likely in the Upper Sco Association, that exhibits only a single 80 per cent deep occultation of 1-d duration. The star has frequent flares and a low-amplitude rotational modulation, but is otherwise quiet over 160 d of cumulative observation during K2 camp…