Search Publications
ALMA + VLT observations of a damped Lyman-α absorbing galaxy: massive, wide CO emission, gas-rich but with very low SFR
Fynbo, J. P. U.; Dessauges-Zavadsky, M.; Christensen, L. +7 more
We are undertaking an Atacama Large Millimeter Array survey of molecular gas in galaxies selected for their strong H I absorption, so-called damped Lyα absorber (DLA)/sub-DLA galaxies. Here, we report CO(2-1) detection from a DLA galaxy at z = 0.716. We also present optical and near-infrared (NIR) spectra of the galaxy revealing [O II], Hα, and [N…
A Galaxy Redshift Survey Near HST/COS AGN Sight Lines
Savage, Blair D.; Shull, J. Michael; Danforth, Charles W. +8 more
To establish the connection between galaxies and UV-detected absorption systems in the local universe, a deep (g ≤ 20) and wide (∼20‧ radius) galaxy redshift survey is presented around 47 sight lines to UV-bright AGNs observed by the Cosmic Origins Spectrograph (COS). Specific COS science team papers have used this survey to connect absorbers to g…
On the Rate and on the Gravitational Wave Emission of Short and Long GRBs
Rodriguez, J.; Wang, Y.; Barres de Almeida, U. +13 more
On the ground of the large number of gamma-ray bursts (GRBs) detected with cosmological redshift, we classified GRBs in seven subclasses, all with binary progenitors which emit gravitational waves (GWs). Each binary is composed of combinations of carbon-oxygen cores (COcore), neutron stars (NSs), black holes (BHs), and white dwarfs (WDs…
Towards a census of high-redshift dusty galaxies with Herschel. A selection of "500 µm-risers"
Buat, V.; Pappalardo, C.; Alvarez-Marquez, J. +6 more
Context. Over the last decade a large number of dusty star-forming galaxies has been discovered up to redshift z = 2 - 3 and recent studies have attempted to push the highly confused Herschel SPIRE surveys beyond that distance. To search for z ≥ 4 galaxies they often consider the sources with fluxes rising from 250 µm to 500 µm (so-cal…
RELICS: Strong Lensing Analysis of the Galaxy Clusters Abell S295, Abell 697, MACS J0025.4-1222, and MACS J0159.8-0849
Ouchi, Masami; Mahler, Guillaume; Bradač, Maruša +37 more
We present a strong lensing analysis of four massive galaxy clusters imaged with the Hubble Space Telescope in the Reionization Lensing Cluster Survey. We use a light-traces-mass technique to uncover sets of multiple images and constrain the mass distribution of the clusters. These mass models are the first published for Abell S295 and MACS J0159.…
The supermassive black hole coincident with the luminous transient ASASSN-15lh
Kim, S.; Krühler, T.; Nicuesa Guelbenzu, A. +11 more
The progenitors of astronomical transients are linked to a specific stellar population and galactic environment, and observing their host galaxies hence constrains the physical nature of the transient itself. Here, we use imaging from the Hubble Space Telescope, and spatially resolved, medium-resolution spectroscopy from the Very Large Telescope o…
On the Dynamic Nature of a Quiescent Prominence Observed by IRIS and MSDP Spectrographs
Schmieder, Brigitte; Chen, Yao; Labrosse, Nicolas +4 more
Quiescent solar prominences are generally considered to have a stable large-scale structure. However, they consist of multiple small-scale structures that are often significantly dynamic. To understand the nature of prominence plasma dynamics we use the high spatial, temporal, and spectral resolution observations obtained by Interface Region Imagi…
The Temporal Development of Dust Formation and Destruction in Nova Sagittarii 2015#2 (V5668 SGR): A Panchromatic Study
Krautter, Joachim; Gehrz, R. D.; Shore, S. N. +15 more
We present 5-28 µm SOFIA FORECAST spectroscopy complemented by panchromatic X-ray through infrared observations of the CO nova V5668 Sgr documenting the formation and destruction of dust during ∼500 days following outburst. Dust condensation commenced by 82 days after outburst at a temperature of ∼1090 K. The condensation temperature indicat…
Anomalies in Time Delays of Lensed Gravitational Waves and Dark Matter Substructures
Ding, Xuheng; Biesiada, Marek; Zhu, Zong-Hong +2 more
Cold dark matter scenarios of hierarchical large-scale structure formation predict the existence of abundant subhalos around large galaxies. However, the number of observed dwarf galaxies is far from this theoretical prediction, suggesting that most of the subhalos could be dark or quite faint. Gravitational lensing is a powerful tool to probe the…
Exploring cosmic origins with CORE: Extragalactic sources in cosmic microwave background maps
Boulanger, F.; Ashdown, M.; Banday, A. J. +124 more
We discuss the potential of a next generation space-borne Cosmic Microwave Background (CMB) experiment for studies of extragalactic sources. Our analysis has particular bearing on the definition of the future space project, CORE, that has been submitted in response to ESA's call for a Medium-size mission opportunity as the successor of the Planck …