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Unveiling the nature of bright z ≃ 7 galaxies with the Hubble Space Telescope
Bowler, R. A. A.; McLure, R. J.; Dunlop, J. S. +1 more
We present new Hubble Space Telescope/Wide Field Camera 3 (HST/WFC3) imaging of 25 extremely luminous (-23.2 ≤ MUV ≲ -21.2) Lyman-break galaxies (LBGs) at z ≃ 7. The sample was initially selected from 1.65 deg2 of ground-based imaging in the UltraVISTA/COSMOS and UDS/SXDS fields, and includes the extreme Lyman α emitters, 'Hi…
Organics in comet 67P - a first comparative analysis of mass spectra from ROSINA-DFMS, COSAC and Ptolemy
Balsiger, H.; Berthelier, J. J.; Fuselier, S. A. +14 more
The ESA Rosetta spacecraft followed comet 67P at a close distance for more than 2 yr. In addition, it deployed the lander Philae on to the surface of the comet. The (surface) composition of the comet is of great interest to understand the origin and evolution of comets. By combining measurements made on the comet itself and in the coma, we probe t…
The Hi-GAL compact source catalogue - I. The physical properties of the clumps in the inner Galaxy (-71.0° < ℓ < 67.0°)
Martin, P. G.; Natoli, P.; Paladini, R. +83 more
Hi-GAL (Herschel InfraRed Galactic Plane Survey) is a large-scale survey of the Galactic plane, performed with Herschel in five infrared continuum bands between 70 and 500 µm. We present a band-merged catalogue of spatially matched sources and their properties derived from fits to the spectral energy distributions (SEDs) and heliocentric dis…
The Green Bank Ammonia Survey: First Results of NH3 Mapping of the Gould Belt
Caselli, Paola; Di Francesco, James; Rosolowsky, Erik +23 more
We present an overview of the first data release (DR1) and first-look science from the Green Bank Ammonia Survey (GAS). GAS is a Large Program at the Green Bank Telescope to map all Gould Belt star-forming regions with {A}{{V}}≳ 7 mag visible from the northern hemisphere in emission from NH3 and other key molecular tracers. T…
Magnetic Properties of Solar Active Regions That Govern Large Solar Flares and Eruptions
Toriumi, Shin; Harra, Louise K.; Nagashima, Kaori +2 more
Solar flares and coronal mass ejections (CMEs), especially the larger ones, emanate from active regions (ARs). With the aim of understanding the magnetic properties that govern such flares and eruptions, we systematically survey all flare events with Geostationary Orbiting Environmental Satellite levels of ≥M5.0 within 45° from disk center between…
Extended ionised and clumpy gas in a normal galaxy at z = 7.1 revealed by ALMA
Maiolino, R.; Castellano, M.; Pentericci, L. +10 more
We present new ALMA observations of the [O III]88 µm line and high angular resolution observations of the [C II]158 µm line in a normal star forming galaxy at z = 7.1. Previous [C II] observations of this galaxy had detected [C II] emission consistent with the Lyα redshift but spatially slightly offset relative to the optical (UV-rest …
Quasar-mode Feedback in Nearby Type 1 Quasars: Ubiquitous Kiloparsec-scale Outflows and Correlations with Black Hole Properties
Veilleux, Sylvain; Rupke, David S. N.; Gültekin, Kayhan
The prevalence and properties of kiloparsec-scale outflows in nearby Type 1 quasars have been the subject of little previous attention. This work presents Gemini integral field spectroscopy of 10 Type 1 radio-quiet quasars at z< 0.3. The excellent image quality, coupled with a new technique to remove the point-spread function using spectral inf…
The VLA-COSMOS 3 GHz Large Project: AGN and host-galaxy properties out to z ≲ 6
Bondi, M.; Berta, S.; Ilbert, O. +29 more
We explore the multiwavelength properties of AGN host galaxies for different classes of radio-selected AGN out to z ≲ 6 via a multiwavelength analysis of about 7700 radio sources in the COSMOS field. The sources were selected with the Very Large Array (VLA) at 3 GHz (10 cm) within the VLA-COSMOS 3 GHz Large Project, and cross-matched with multiwav…
X-shooter study of accretion in Chamaeleon I. II. A steeper increase of accretion with stellar mass for very low-mass stars?
Prusti, T.; Henning, T.; Pascucci, I. +10 more
The dependence of the mass accretion rate on the stellar properties is a key constraint for star formation and disk evolution studies. Here we present a study of a sample of stars in the Chamaeleon I star-forming region carried out using spectra taken with the ESO VLT/X-shooter spectrograph. The sample is nearly complete down to stellar masses (M<…
Spitzer Phase Curve Constraints for WASP-43b at 3.6 and 4.5 µm
Fortney, Jonathan J.; Stevenson, Kevin B.; Kataria, Tiffany +6 more
Previous measurements of heat redistribution efficiency (the ability to transport energy from a planet’s highly irradiated dayside to its eternally dark nightside) show considerable variation between exoplanets. Theoretical models predict a positive correlation between heat redistribution efficiency and temperature for tidally locked planets; howe…