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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…
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…
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 …
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…
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…
Two p-mode-dominated subdwarf B pulsators in binaries with F-star companions observed with K2
Reed, M. D.; Jeffery, C. S.; Németh, P. +6 more
This paper presents spectroscopic and seismic analyses of two rare hybrid pulsating subdwarf B (sdB) stars, PG 0048+091 and PG 1315-123, which are dominated by pressure (p)-mode pulsations. These are only the second and third sdB pulsators with detected frequency multiplets in both the p- and g (gravity)-mode regions. This allows an examination of…
The dynamics and distribution of angular momentum in HiZELS star-forming galaxies at z = 0.8-3.3
Smail, Ian; Swinbank, A. M.; Glazebrook, K. +18 more
We present adaptive optics assisted integral field spectroscopy of 34 star-forming galaxies at z = 0.8-3.3 selected from the HiZELS narrow-band survey. We measure the kinematics of the ionized interstellar medium on ∼1 kpc scales, and show that the galaxies are turbulent, with a median ratio of rotational to dispersion support of V / σ = 0.82 ± 0.…
A new method for target selection in direct imaging programmes with COPAINS
Bonavita, M.; Biller, B.; Fontanive, C. +2 more
We present COPAINS (Code for Orbital Parametrization of Astrometrically Inferred New Systems), an innovative tool developed to identify previously undiscovered companions detectable via direct imaging, based on changes in stellar proper motions across multiple astrometric catalogues. This powerful procedure allows for dynamical predictions of the …
An automated search for transiting exocomets
Wyatt, Mark C.; Hodgkin, Simon T.; Kennedy, Grant M. +1 more
This paper discusses an algorithm for detecting single transits in photometric time-series data. Specifically, we aim to identify asymmetric transits with ingress that is more rapid than egress, as expected for cometary bodies with a significant tail. The algorithm is automated, so can be applied to large samples and only a relatively small number…
SDSS J094635.06+101706.1: a redshift one, very radio-loud, γ-ray emitting narrow-line Seyfert 1 galaxy
Komossa, S.; Yuan, Weimin; Yi, Weimin +4 more
As hybrids of narrow-line Seyfert 1 (NLS1) galaxies and blazars, γ-ray emitting NLS1s are important probes of jet physics in the high Eddington-ratio regime. Only very few of them are known to date; the majority of them below redshift z = 0.5. Here, we present the identification of the γ-ray emitting AGN TXS 0943+105 (SDSS J094635.06+101706.1) as …