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Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes
Stassun, Keivan G.; Collins, Karen A.; Gaudi, B. Scott
We present empirical measurements of the radii of 116 stars that host transiting planets. These radii are determined using only direct observables—the bolometric flux at Earth, the effective temperature, and the parallax provided by the Gaia first data release—and thus are virtually model independent, with extinction being the only free parameter.…
Unveiling ν secrets with cosmological data: Neutrino masses and mass hierarchy
Ho, Shirley; Mena, Olga; Gerbino, Martina +4 more
Using some of the latest cosmological data sets publicly available, we derive the strongest bounds in the literature on the sum of the three active neutrino masses, Mν, within the assumption of a background flat Λ CDM cosmology. In the most conservative scheme, combining Planck cosmic microwave background temperature anisotropies and ba…
Directly Observing the Galaxies Likely Responsible for Reionization
Finkelstein, S. L.; Lotz, J. M.; Livermore, R. C.
We report a new analysis of the Hubble Frontier Fields clusters Abell 2744 and MACS 0416 using wavelet decomposition to remove the cluster light, enabling the detection of highly magnified (>50×) galaxies a factor of 10× fainter in luminosity than previous studies. We find 167 galaxies at z≳ 6, and with this sample we are able to characterize t…
A deep ALMA image of the Hubble Ultra Deep Field
Ivison, R. J.; Scott, D.; van Kampen, E. +36 more
We present the results of the first, deep Atacama Large Millimeter Array (ALMA) imaging covering the full ≃4.5 arcmin2 of the Hubble Ultra Deep Field (HUDF) imaged with Wide Field Camera 3/IR on HST. Using a 45-pointing mosaic, we have obtained a homogeneous 1.3-mm image reaching σ1.3 ≃ 35 µJy, at a resolution of ≃0.7 a…
Lyα and C III] emission in z = 7-9 Galaxies: accelerated reionization around luminous star-forming systems?
Charlot, Stéphane; Chevallard, Jacopo; Tang, Mengtao +9 more
We discuss new Keck/MOSFIRE spectroscopic observations of four luminous galaxies at z ≃ 7-9 selected to have intense optical line emission by Roberts-Borsani et al. Previous follow-up has revealed Lyα in two of the four galaxies. Our new MOSFIRE observations confirm that Lyα is present in the entire sample. We detect Lyα emission in the galaxy COS…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: anisotropic galaxy clustering in Fourier space
Ross, Nicholas P.; Schneider, Donald P.; Eisenstein, Daniel J. +20 more
We investigate the anisotropic clustering of the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 12 sample, which consists of 1198 006 galaxies in the redshift range 0.2 < z < 0.75 and a sky coverage of 10 252 deg2. We analyse this data set in Fourier space, using the power-spectrum multipoles to measure redshift-space…
A New Generation of Standard Solar Models
Basu, Sarbani; Serenelli, Aldo M.; Bergström, Johannes +6 more
We compute a new generation of standard solar models (SSMs) that includes recent updates on some important nuclear reaction rates and a more consistent treatment of the equation of state. Models also include a novel and flexible treatment of opacity uncertainties based on opacity kernels, required in light of recent theoretical and experimental wo…
Discovery of a 0.42-s pulsar in the ultraluminous X-ray source NGC 7793 P13
Salvaterra, R.; Haberl, F.; Greiner, J. +11 more
NGC 7793 P13 is a variable (luminosity range ∼100) ultraluminous X-ray source proposed to host a stellar-mass black hole of less than 15 M⊙ in a binary system with orbital period of 64 d and a 18-23 M⊙ B9Ia companion. Within the EXTraS (Exploring the X-ray Transient and variable Sky) project, we discovered pulsations at a per…
Evolution of Interstellar Medium, Star Formation, and Accretion at High Redshift
Aussel, H.; Ivison, R. J.; Ilbert, O. +20 more
ALMA observations of the long wavelength dust continuum are used to estimate the interstellar medium (ISM) masses in a sample of 708 galaxies at z = 0.3 to 4.5 in the COSMOS field. The galaxy sample has known far-infrared luminosities and, hence, star formation rates (SFRs) and stellar masses ({M}* ) from the optical-infrared spectrum f…
H0LiCOW - I. H0 Lenses in COSMOGRAIL's Wellspring: program overview
Treu, T.; Blandford, R. D.; Auger, M. W. +21 more
Strong gravitational lens systems with time delays between the multiple images allow measurements of time-delay distances, which are primarily sensitive to the Hubble constant that is key to probing dark energy, neutrino physics and the spatial curvature of the Universe, as well as discovering new physics. We present H0LiCOW (H0 Lenses …