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Thermal balance and comparison of gas and dust properties of dense clumps in the Hi-GAL survey
Rygl, K. L. J.; Elia, D.; Schisano, E. +7 more
We present a comparative study of physical properties derived from gas and dust emission in a sample of 1068 dense Galactic clumps. The sources are selected from the cross-match of the Herschel Infrared Galactic Plane Survey with 16 catalogues of NH3 line emission in its lowest inversion (1,1) and (2,2) transitions. The sample covers a …
Distinguishing circumstellar from stellar photometric variability in Eta Carinae
Gull, T. R.; Corcoran, M. F.; Madura, T. I. +14 more
The interacting binary Eta Carinae remains one of the most enigmatic massive stars in our Galaxy despite over four centuries of observations. In this work, its light curve from the ultraviolet to the near-infrared is analysed using spatially resolved HST observations and intense monitoring at the La Plata Observatory, combined with previously publ…
Young massive clusters in the interacting LIRG Arp 299: evidence for the dependence of star cluster formation and evolution on environment
Väisänen, P.; Ryder, S. D.; Randriamanakoto, Z. +1 more
Archival WFC3/UVIS imaging of Arp 299 (NGC 3690E+ NGC 3690W) is retrieved to investigate the young massive cluster (YMC) population of this ongoing merger. We extract 2182 cluster candidates, including 1323 high confidence photometric sources. Multiband photometry is matched with Yggdrasil models to estimate the age, mass, and extinction of each c…
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.…