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STRIDES: a 3.9 per cent measurement of the Hubble constant from the strong lens system DES J0408-5354
Bechtol, K.; Smith, M.; Finley, D. A. +88 more
We present a blind time-delay cosmographic analysis for the lens system DES J0408-5354. This system is extraordinary for the presence of two sets of multiple images at different redshifts, which provide the opportunity to obtain more information at the cost of increased modelling complexity with respect to previously analysed systems. We perform d…
Host Galaxy Properties and Offset Distributions of Fast Radio Bursts: Implications for Their Progenitors
Kilpatrick, Charles D.; Simha, Sunil; Mannings, Alexandra +15 more
We present observations and detailed characterizations of five new host galaxies of fast radio bursts (FRBs) discovered with the Australian Square Kilometre Array Pathfinder (ASKAP) and localized to ≲1″. Combining these galaxies with FRB hosts from the literature, we introduce criteria based on the probability of chance coincidence to define a sub…
The ALPINE-ALMA [CII] survey. Survey strategy, observations, and sample properties of 118 star-forming galaxies at 4 < z < 6
Cimatti, A.; Maiolino, R.; Pozzi, F. +43 more
The ALMA-ALPINE [CII] survey is aimed at characterizing the properties of a sample of normal star-forming galaxies (SFGs). The ALMA Large Program to INvestigate (ALPINE) features 118 galaxies observed in the [CII]-158 µm line and far infrared (FIR) continuum emission during the period of rapid mass assembly, right after the end of the HI rei…
Planck 2018 results. XII. Galactic astrophysics using polarized dust emission
Kim, J.; Miville-Deschênes, M. -A.; Boulanger, F. +160 more
Observations of the submillimetre emission from Galactic dust, in both total intensity I and polarization, have received tremendous interest thanks to the Planck full-sky maps. In this paper we make use of such full-sky maps of dust polarized emission produced from the third public release of Planck data. As the basis for expanding on astrophysica…
Hubble Space Telescope Observations of Mira Variables in the SN Ia Host NGC 1559: An Alternative Candle to Measure the Hubble Constant
Casertano, Stefano; Filippenko, Alexei V.; Riess, Adam G. +7 more
We present year-long, near-infrared Hubble Space Telescope (HST) WFC3 observations used to search for Mira variables in NGC 1559, the host galaxy of the Type Ia supernova (SN Ia) SN 2005df. This is the first dedicated search for Miras, highly evolved low-mass stars, in an SN Ia host, and subsequently the first calibration of the SN Ia luminosity u…
The Solar Orbiter magnetometer
Russell, C. T.; Forsyth, R.; Müller, D. +49 more
The magnetometer instrument on the Solar Orbiter mission is designed to measure the magnetic field local to the spacecraft continuously for the entire mission duration. The need to characterise not only the background magnetic field but also its variations on scales from far above to well below the proton gyroscale result in challenging requiremen…
A planet within the debris disk around the pre-main-sequence star AU Microscopii
Barclay, Thomas; Vanderburg, Andrew; Hellier, Coel +84 more
AU Microscopii (AU Mic) is the second closest pre-main-sequence star, at a distance of 9.79 parsecs and with an age of 22 million years1. AU Mic possesses a relatively rare2 and spatially resolved3 edge-on debris disk extending from about 35 to 210 astronomical units from the star4, and with clumps exhib…
Planetary nebulae seen with TESS: Discovery of new binary central star candidates from Cycle 1
Lillo-Box, J.; Jones, D.; Miranda, L. F. +2 more
Context. It has become clear in recent years that binarity plays a crucial role in many aspects of planetary nebulae (PNe), particularly with regard to the striking morphologies they exhibit. To date, there are nearly 60 known binary central stars of PNe (bCSPNe). However, both theory and observation indicate that this figure represents only the t…
SOAR TESS Survey. I. Sculpting of TESS Planetary Systems by Stellar Companions
Ziegler, Carl; Tokovinin, Andrei; Mann, Andrew W. +3 more
The Transiting Exoplanet Survey Satellite (TESS) is finding transiting planet candidates around bright, nearby stars across the entire sky. The large field of view, however, results in low spatial resolution; therefore, multiple stars contribute to almost every TESS light curve. High angular resolution imaging can detect the previously unknown com…
A compendium of distances to molecular clouds in the Star Formation Handbook
Alves, João; Speagle, Joshua S.; Zucker, Catherine +4 more
Accurate distances to local molecular clouds are critical for understanding the star and planet formation process, yet distance measurements are often obtained inhomogeneously on a cloud-by-cloud basis. We have recently developed a method that combines stellar photometric data with Gaia DR2 parallax measurements in a Bayesian framework to infer th…