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NGTS-6b: an ultrashort period hot-Jupiter orbiting an old K dwarf
Jackman, James A. G.; Wheatley, Peter J.; Bayliss, Daniel +37 more
We report the discovery of a new ultrashort period hot Jupiter from the Next Generation Transit Survey. NGTS-6b orbits its star with a period of 21.17 h, and has a mass and radius of 1.330^{+0.024}_{-0.028}MJ and 1.271^{+0.197}_{-0.188}RJ, respectively, returning a planetary bulk density of 0.711^{+0.214}_{-0.136} g cm-3…
Cosmological discordances. III. More on measure properties, large-scale-structure constraints, the Hubble constant and Planck data
Ishak, Mustapha; Lin, Weikang; Garcia-Quintero, Cristhian +1 more
Consistency between cosmological datasets is essential for ongoing and future cosmological analyses. We first investigate the questions of stability and applicability of some moment-based inconsistency measures to multiple datasets. We show that the recently introduced index of inconsistency (IOI) is numerically stable while it can be applied to m…
The cosmic spectral energy distribution in the EAGLE simulation
Baes, Maarten; Theuns, Tom; Camps, Peter +4 more
The cosmic spectral energy distribution (CSED) is the total emissivity as a function of wavelength of galaxies in a given cosmic volume. We compare the observed CSED from the UV to the submm to that computed from the EAGLE (Evolution and Assembly of GaLaxies and their Environments) cosmological hydrodynamical simulation, post-processed with stella…
The Birth of a Jet-driven Twin CME and Its Deflection from Remote Magnetic Fields
Shen, Yuandeng; Duan, Yadan; Chen, Hechao +1 more
We report the formation of a complicated coronal mass ejection (CME) on 2015 August 23 by using the high temporal and high spatial resolution multi-wavelength observations taken by the Solar Dynamic Observatory and the Solar and Heliospheric Observatory. The CME exhibited both jetlike and bubble-like components simultaneously, and therefore, we ca…
Evidence for a Young Stellar Population in Nearby Type 1 Active Galaxies
Ho, Luis C.; Kim, Minjin
To understand the physical origin of the close connection between supermassive black holes (BHs) and their host galaxies, it is vital to investigate star formation properties in active galaxies. Using a large data set of nearby type 1 active galactic nuclei (AGNs) with detailed structural decomposition based on high-resolution optical images obtai…
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…