Search Publications
Near infrared spectroscopy and star-formation histories of 3 ≤ z ≤ 4 quiescent galaxies
Papovich, C.; Glazebrook, K.; Kacprzak, G. G. +8 more
We present Keck-MOSFIRE H and K spectra for a sample of 24 candidate quiescent galaxies at 3 < z < 4, identified from their rest-frame UVJ colors and photometric redshifts in the ZFOURGE and 3DHST surveys. With median integration times of one hour in H and five in K, we obtain spectroscopic redshifts for half of the sample, using either Balm…
GOODS-ALMA: 1.1 mm galaxy survey. I. Source catalog and optically dark galaxies
Magnelli, B.; Daddi, E.; Elbaz, D. +36 more
Aims: We present a 69 arcmin2 ALMA survey at 1.1 mm, GOODS-ALMA, matching the deepest HST-WFC3 H-band part of the GOODS-South field.
Methods: We tapered the 0″24 original image with a homogeneous and circular synthesized beam of 0″60 to reduce the number of independent beams - thus reducing the number of purely statistical spu…
Gaia Data Release 2. Gaia Radial Velocity Spectrometer
Prusti, T.; Smith, M.; Gosset, E. +40 more
This paper presents the specification, design, and development of the Radial Velocity Spectrometer (RVS) on the European Space Agency's Gaia mission. Starting with the rationale for the full six dimensions of phase space in the dynamical modelling of the Galaxy, the scientific goals and derived top-level instrument requirements are discussed, lead…
The Next Generation Transit Survey (NGTS)
Jordán, Andrés; Wheatley, Peter J.; Bayliss, Daniel +43 more
We describe the Next Generation Transit Survey (NGTS), which is a ground-based project searching for transiting exoplanets orbiting bright stars. NGTS builds on the legacy of previous surveys, most notably WASP, and is designed to achieve higher photometric precision and hence find smaller planets than have previously been detected from the ground…
The extreme faint end of the UV luminosity function at z ∼ 6 through gravitational telescopes: a comprehensive assessment of strong lensing uncertainties
Richard, Johan; Schaerer, Daniel; Kneib, Jean-Paul +1 more
With the Hubble Frontier Fields program, gravitational lensing has provided a powerful way to extend the study of the ultraviolet luminosity function (LF) of galaxies at z ∼ 6 down to unprecedented magnitude limits. At the same time, significant discrepancies between different studies were found at the very faint end of the LF. In an attempt to un…
Galaxy growth in a massive halo in the first billion years of cosmic history
Bayliss, M. B.; Béthermin, M.; Murphy, E. J. +34 more
According to the current understanding of cosmic structure formation, the precursors of the most massive structures in the Universe began to form shortly after the Big Bang, in regions corresponding to the largest fluctuations in the cosmic density field. Observing these structures during their period of active growth and assembly—the first few hu…
Dust temperature and mid-to-total infrared color distributions for star-forming galaxies at 0 < z < 4
Elbaz, D.; Franco, M.; Ciesla, L. +3 more
We present a new, publicly available library of dust spectral energy distributions (SEDs). These SEDs are characterized by only three parameters: the dust mass (Mdust), the dust temperature (Tdust), and the mid-to-total infrared color (IR8 ≡ LIR/L8). The latter measures the relative contribution of polyc…
The SINS/zC-SINF Survey of z ∼ 2 Galaxy Kinematics: SINFONI Adaptive Optics-assisted Data and Kiloparsec-scale Emission-line Properties
Lutz, D.; Wuyts, S.; Cimatti, A. +29 more
We present the “SINS/zC-SINF AO survey” of 35 star-forming galaxies, the largest sample with deep adaptive optics (AO)-assisted near-infrared integral field spectroscopy at z ∼ 2. The observations, taken with SINFONI at the Very Large Telescope, resolve the Hα and [N II] emission and kinematics on scales of ∼1.5 kpc. The sample probes the massive …
Three Hypervelocity White Dwarfs in Gaia DR2: Evidence for Dynamically Driven Double-degenerate Double-detonation Type Ia Supernovae
Foley, Ryan J.; Boubert, Douglas; Smith, Nathan +23 more
Double detonations in double white dwarf (WD) binaries undergoing unstable mass transfer have emerged in recent years as one of the most promising Type Ia supernova (SN Ia) progenitor scenarios. One potential outcome of this “dynamically driven double-degenerate double-detonation” (D6) scenario is that the companion WD survives the expl…
The HDUV Survey: A Revised Assessment of the Relationship between UV Slope and Dust Attenuation for High-redshift Galaxies
van Dokkum, Pieter G.; Illingworth, Garth D.; Labbé, Ivo +13 more
We use a newly assembled sample of 3545 star-forming galaxies with secure spectroscopic, grism, and photometric redshifts at z = 1.5-2.5 to constrain the relationship between UV slope (β) and dust attenuation (L IR/L UV ≡ IRX). Our sample significantly extends the range of L UV and β probed in previous UV-selected …