Search Publications
r-process Lanthanide Production and Heating Rates in Kilonovae
Lippuner, Jonas; Roberts, Luke F.
r-process nucleosynthesis in material ejected during neutron star mergers may lead to radioactively powered transients called kilonovae. The timescale and peak luminosity of these transients depend on the composition of the ejecta, which determines the local heating rate from nuclear decays and the opacity. Kasen et al. and Tanaka & Hotokezaka…
Clumpy Galaxies in CANDELS. I. The Definition of UV Clumps and the Fraction of Clumpy Galaxies at 0.5 < z < 3
Barro, Guillermo; Bell, Eric F.; Ferguson, Henry C. +19 more
Although giant clumps of stars are thought to be crucial to galaxy formation and evolution, the most basic demographics of clumps are still uncertain, mainly because the definition of clumps has not been thoroughly discussed. In this paper, we carry out a study of the basic demographics of clumps in star-forming galaxies at 0.5 < z < 3, usin…
Weather on Other Worlds. II. Survey Results: Spots are Ubiquitous on L and T Dwarfs
Goldman, Bertrand; Apai, Dániel; Marley, Mark S. +7 more
We present results from the Weather on Other Worlds Spitzer Exploration Science program to investigate photometric variability in L and T dwarfs, usually attributed to patchy clouds. We surveyed 44 L3-T8 dwarfs, spanning a range of J - Ks colors and surface gravities. We find that 14/23 (61%-20%+17%, 95% confidence…
A Turnover in the Galaxy Main Sequence of Star Formation at M * ~ 1010 M ⊙ for Redshifts z < 1.3
Casey, Caitlin M.; Kartaltepe, Jeyhan S.; Kewley, Lisa J. +14 more
The relationship between galaxy star formation rates (SFRs) and stellar masses (M *) is reexamined using a mass-selected sample of ~62,000 star-forming galaxies at z <= 1.3 in the COSMOS 2 deg2 field. Using new far-infrared photometry from Herschel-PACS and SPIRE and Spitzer-MIPS 24 µm, along with derived infrared lu…
LoCuSS: The Slow Quenching of Star Formation in Cluster Galaxies and the Need for Pre-processing
Finoguenov, A.; Smith, G. P.; Okabe, N. +8 more
We present a study of the spatial distribution and kinematics of star-forming galaxies in 30 massive clusters at 0.15 < z < 0.30, combining wide-field Spitzer 24 µm and GALEX near-ultraviolet imaging with highly complete spectroscopy of cluster members. The fraction (fSF) of star-forming cluster galaxies rises steadily with …
A Measurement of Secondary Cosmic Microwave Background Anisotropies from the 2500 Square-degree SPT-SZ Survey
Bleem, L. E.; Stark, A. A.; George, E. M. +45 more
We present measurements of secondary cosmic microwave background (CMB) anisotropies and cosmic infrared background (CIB) fluctuations using data from the South Pole Telescope (SPT) covering the complete 2540 deg2 SPT-SZ survey area. Data in the three SPT-SZ frequency bands centered at 95, 150, and 220 GHz, are used to produce six angula…
Herschel Survey of Galactic OH+, H2O+, and H3O+: Probing the Molecular Hydrogen Fraction and Cosmic-Ray Ionization Rate
Menten, K. M.; Falgarone, E.; Godard, B. +19 more
In diffuse interstellar clouds the chemistry that leads to the formation of the oxygen-bearing ions OH+, H2O+, and H3O+ begins with the ionization of atomic hydrogen by cosmic rays, and continues through subsequent hydrogen abstraction reactions involving H2. Given these reaction pa…
A Spectroscopic Redshift Measurement for a Luminous Lyman Break Galaxy at z = 7.730 Using Keck/MOSFIRE
Oesch, P. A.; Bouwens, R. J.; Illingworth, G. D. +9 more
We present a spectroscopic redshift measurement of a very bright Lyman break galaxy at z=7.7302+/- 0.0006 using the Keck/Multi-Object Spectrometer for Infra-Red Exploration. The source was pre-selected photometrically in the EGS field as a robust z ∼ 8 candidate with H = 25.0 mag based on optical non-detections and a very red Spitzer/IRAC [3.6]-[4…
The Grism Lens-Amplified Survey from Space (GLASS). I. Survey Overview and First Data Release
Malkan, M. A.; Poggianti, B.; Vulcani, B. +19 more
We give an overview of the Grism Lens Amplified Survey from Space (GLASS), a large Hubble Space Telescope program aimed at obtaining grism spectroscopy of the fields of 10 massive clusters of galaxies at redshift z = 0.308-0.686, including the Hubble Frontier Fields (HFF). The Wide Field Camera 3 (WFC3) yields near-infrared spectra of the cluster …
The SCUBA-2 Cosmology Legacy Survey: ALMA Resolves the Rest-frame Far-infrared Emission of Sub-millimeter Galaxies
Thomson, A. P.; Ivison, R. J.; Scott, D. +26 more
We present high-resolution (0.''3) Atacama Large Millimeter Array 870 µm imaging of 52 sub-millimeter galaxies (SMGs) in the Ultra Deep Survey field to investigate the size and morphology of the sub-millimeter (sub-mm) emission on 2-10 kpc scales. We derive a median intrinsic angular size of FWHM = 0.''30 ± 0.''04 for the 23 SMGs in the samp…