Search Publications
Missions
Journals
Publication Years
The Evolution of the Fractions of Quiescent and Star-forming Galaxies as a Function of Stellar Mass Since z = 3: Increasing Importance of Massive, Dusty Star-forming Galaxies in the Early Universe
van Dokkum, Pieter G.; Martis, Nicholas S.; Muzzin, Adam +7 more
Using the UltraVISTA DR1 and 3D-HST catalogs, we construct a stellar-mass-complete sample, unique for its combination of surveyed volume and depth, to study the evolution of the fractions of quiescent galaxies, moderately unobscured star-forming galaxies, and dusty star-forming galaxies as a function of stellar mass over the redshift interval 0.2 …
Sunset jets observed on comet 67P/Churyumov-Gerasimenko sustained by subsurface thermal lag
Jorda, L.; Lamy, P. L.; Lara, L. M. +46 more
We present observations of sunset jets on comet 67P/Churyumov-Gerasimenko by Rosetta/OSIRIS camera. In late April 2015, when the comet was at a heliocentric distance of ~1.8 AU, clusters of dust jets that originated in the Ma'at region on the comet's small lobe were identified from multipleimages and were apparently sustained for about an hour bey…
Mass loading at 67P/Churyumov-Gerasimenko: A case study
Behar, E.; Nilsson, H.; Richter, I. +3 more
We study the dynamics of the interaction between the solar wind ions and a partially ionized atmosphere around a comet, at a distance of 2.88 AU from the Sun during a period of low nucleus activity. Comparing particle data and magnetic field data for a case study, we highlight the prime role of the solar wind electric field in the cometary ion dyn…
The Morphologies and Alignments of Gas, Mass, and the Central Galaxies of CLASH Clusters of Galaxies
Donahue, Megan; Voit, G. Mark; Zitrin, Adi +10 more
Morphology is often used to infer the state of relaxation of galaxy clusters. The regularity, symmetry, and degree to which a cluster is centrally concentrated inform quantitative measures of cluster morphology. The Cluster Lensing and Supernova survey with Hubble Space Telescope (CLASH) used weak and strong lensing to measure the distribution of …
Supervoids in the WISE-2MASS catalogue imprinting cold spots in the cosmic microwave background
Finelli, F.; Paci, F.; García-Bellido, J. +2 more
The Cold Spot (CS) is a clear feature in the cosmic microwave background (CMB); it could be of primordial origin, or caused by a intervening structure along the line of sight. We identified a large projected underdensity in the recently constructed WISE-2MASS all-sky infrared galaxy catalogue aligned with the CS direction at (l, b) ≈ (209°, -57°).…
Long-term observations of the pulsars in 47 Tucanae - I. A study of four elusive binary systems
van den Berg, M.; Heinke, C. O.; Camilo, F. +11 more
For the past couple of decades, the Parkes radio telescope has been regularly observing the millisecond pulsars in 47 Tucanae (47 Tuc). This long-term timing programme was designed to address a wide range of scientific issues related to these pulsars and the globular cluster where they are located. In this paper, the first of a series, we address …
First detection of gas-phase ammonia in a planet-forming disk. NH3, N2H+, and H2O in the disk around TW Hydrae
Cleeves, L. Ilsedore; Bergin, Edwin A.; van Dishoeck, Ewine F. +10 more
Context. Nitrogen chemistry in protoplanetary disks and the freeze-out on dust particles is key for understanding the formation of nitrogen-bearing species in early solar system analogs. In dense cores, 10% to 20% of the nitrogen reservoir is locked up in ices such as NH3, NH4+ and OCN-. So far, ammonia …
Constraints on the neutrino mass and mass hierarchy from cosmological observations
Huang, Qing-Guo; Wang, Ke; Wang, Sai
Considering the mass splitting between three active neutrinos, we represent the new constraints on the sum of neutrino mass
A Detection of the Integrated Sachs-Wolfe Imprint of Cosmic Superstructures Using a Matched-filter Approach
Nadathur, Seshadri; Crittenden, Robert
We present a new method for detection of the integrated Sachs-Wolfe (ISW) imprints of cosmic superstructures on the cosmic microwave background (CMB), based on a matched-filtering approach. The expected signal-to-noise ratio for this method is comparable to that obtained from the full cross-correlation, and unlike other stacked filtering technique…
Planck 2015 results. IV. Low Frequency Instrument beams and window functions
Bernard, J. -P.; Planck Collaboration; Ade, P. A. R. +200 more
This paper presents the characterization of the in-flight beams, the beam window functions, and the associated uncertainties for the Planck Low Frequency Instrument (LFI). The structure of the paper is similar to that presented in the 2013 Planck release; the main differences concern the beam normalization and the delivery of the window functions …