Search Publications
Missions
Journals
Publication Years
Does NGC 6397 contain an intermediate-mass black hole or a more diffuse inner subcluster?
Mamon, Gary A.; Vitral, Eduardo
We analyze proper motions from the Hubble Space Telescope (HST) and the second Gaia data release along with line-of-sight velocities from the MUSE spectrograph to detect imprints of an intermediate-mass black hole (IMBH) in the center of the nearby, core-collapsed, globular cluster NGC 6397. For this, we use the new MAMPOSST-PM Bayesian mass-model…
Direct imaging of sub-Jupiter mass exoplanets with James Webb Space Telescope coronagraphy
Carter, Aarynn L.; Hinkley, Sasha; Pueyo, Laurent +7 more
The James Webb Space Telescope (JWST), currently scheduled to launch in 2021, will dramatically advance our understanding of exoplanetary systems with its ability to directly image and characterize planetary-mass companions at wide separations through coronagraphy. Using state-of-the-art simulations of JWST performance, in combination with the lat…
Populating the brown dwarf and stellar boundary: Five stars with transiting companions near the hydrogen-burning mass limit
Henning, Thomas; Triaud, Amaury H. M. J.; Latham, David W. +53 more
We report the discovery of five transiting companions near the hydrogen-burning mass limit in close orbits around main sequence stars originally identified by the Transiting Exoplanet Survey Satellite (TESS) as TESS objects of interest (TOIs): TOI-148, TOI-587, TOI-681, TOI-746, and TOI-1213. Using TESS and ground-based photometry as well as radia…
The ASTRODEEP-GS43 catalogue: New photometry and redshifts for the CANDELS GOODS-South field
Elbaz, D.; Castellano, M.; Pentericci, L. +17 more
Context. We present ASTRODEEP-GS43, a new multi-wavelength photometric catalogue of the GOODS-South field, which builds and improves upon the previously released CANDELS catalogue.
Aims: We provide photometric fluxes and corresponding uncertainties in 43 optical and infrared bands (25 wide and 18 medium filters), as well as the photometric re…
Sensor Noise in LISA Pathfinder: In-Flight Performance of the Optical Test Mass Readout
Mendes, L.; Russano, G.; Sanjuan, J. +85 more
We report on the first subpicometer interferometer flown in space. It was part of ESA's Laser Interferometer Space Antenna (LISA) Pathfinder mission and performed the fundamental measurement of the positional and angular motion of two free-falling test masses. The interferometer worked immediately, stably, and reliably from switch on until the end…
Distance of Hi-GAL sources
Zavagno, A.; Elia, D.; Pezzuto, S. +18 more
Aims: Distances are key to determining the physical properties of sources. In the Galaxy, large (> 10 000) homogeneous samples of sources for which distance are available, covering the whole Galactic distance range, are still missing. Here we present a catalog of velocity and distance for a large sample (> 100 000) of Hi-GAL compact sou…
Light bending and X-ray echoes from behind a supermassive black hole
Brandt, W. N.; Costantini, E.; Blandford, R. D. +2 more
The innermost regions of accretion disks around black holes are strongly irradiated by X-rays that are emitted from a highly variable, compact corona, in the immediate vicinity of the black hole1-3. The X-rays that are seen reflected from the disk4, and the time delays, as variations in the X-ray emission echo or `reverberate…
A ∼75 per cent occurrence rate of debris discs around F stars in the β Pic moving group
Pawellek, Nicole; Matrà, Luca; Kennedy, Grant +2 more
Only 20 per cent of old field stars have detectable debris discs, leaving open the question of what disc, if any, is present around the remaining 80 per cent. Young moving groups allow to probe this population, since discs are expected to have been brighter early on. This paper considers the population of F stars in the 23 Myr-old β Pictoris movin…
The Census of Exoplanets in Visual Binaries: population trends from a volume-limited Gaia DR2 and literature search
Fontanive, Clémence; Bardalez Gagliuffi, Daniella
We present results from an extensive search in the literature and Gaia DR2 for visual, co-moving binary companions to stars hosting exoplanets and brown dwarfs within 200 pc. We found 218 planet hosts out of the 938 in our sample to be part of multiple-star systems, with 10 newly discovered binaries and 2 new tertiary stellar components. This repr…
Low-frequency monitoring of flare star binary CR Draconis: long-term electron-cyclotron maser emission
Ray, T. P.; Callingham, J. R.; Shimwell, T. W. +12 more
Recently detected coherent low-frequency radio emission from M dwarf systems shares phenomenological similarities with emission produced by magnetospheric processes from the gas giant planets of our Solar System. Such beamed electron-cyclotron maser emission can be driven by a star-planet interaction or a breakdown in co-rotation between a rotatin…