Suggested papers for
Tue, Dec 05, 2017 at 11 am
Thu, Dec 07, 2017 at 1 pm
Fri, Dec 08, 2017 at 11 am

5 Dec 2017

### Copious Amounts of Dust and Gas in a z=7.5 Quasar Host Galaxy

We present IRAM/NOEMA and JVLA observations of the quasar J1342+0928 at z=7.54 and report detections of copious amounts of dust and [CII] emission in the interstellar medium (ISM) of its host galaxy. At this redshift, the age of the universe is 690 Myr, about 10% younger than the redshift of the previous quasar record holder. Yet, the ISM of this new quasar host galaxy is significantly enriched by metals, as evidenced by the detection of the [CII] 158micron cooling line and the underlying far-i...

4 Dec 2017

4 Dec 2017

### A free-floating planet candidate from the OGLE and KMTNet surveys

Current microlensing surveys are sensitive to free-floating planets down to Earth-mass objects. All published microlensing events attributed to unbound planets were identified based on their short timescale (below 2 d), but lacked an angular Einstein radius measurement (and hence lacked a significant constraint on the lens mass). Here we present the discovery of a Neptune-mass free-floating planet candidate in the ultrashort ($t_{\rm E}=0.320\pm0.003$ d) microlensing event OGLE-2016-BLG-1540. T...

4 Dec 2017

### High Contrast Observations of Bright Stars with a Starshade

Starshades are a leading technology to enable the direct detection and spectroscopic characterization of Earth-like exoplanets. In an effort to advance starshade technology through system level demonstrations, the McMath-Pierce Solar Telescope was adapted to enable the suppression of astronomical sources with a starshade. The long baselines achievable with the heliostat provide measurements of starshade performance at a flight-like Fresnel number and resolution, aspects critical to the validati...

06 Dec 2017

### An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5

Eduardo Bañados, Bram P. Venemans, Chiara Mazzucchelli, Emanuele P. Farina, + 13 more

Letter

28 Nov 2017

### Constraining Planetary Migration and Tidal Dissipation with Coeval Hot Jupiters

We investigate the constraints on the formation of, and tidal dissipation processes in, hot Jupiters (HJs) that can be inferred based on reliable knowledge of the age of a system or population. Particular attention is paid to the role of young systems (such as those in open clusters or star-forming regions) in such studies. For an ensemble of coeval HJ (or proto-HJ) systems, we quantify the effect of age on the distribution of orbital eccentricities with respect to orbital periods as well as th...

Updated 2017/12/08 11:32:23