Search Publications
DirtyGrid I: 3D Dust Radiative Transfer Modeling of Spectral Energy Distributions of Dusty Stellar Populations
Gordon, Karl D.; Misselt, Karl A.; Law, Ka-Hei
Understanding the properties of stellar populations and interstellar dust has important implications for galaxy evolution. In normal star-forming galaxies, stars and the interstellar medium dominate the radiation from ultraviolet (UV) to infrared (IR). In particular, interstellar dust absorbs and scatters UV and optical light, re-emitting the abso…
The Most Compact Bright Radio-loud AGNs. II. VLBA Observations of 10 Sources at 43 and 86 GHz
An, T.; Frey, S.; Yang, J. +10 more
Radio-loud active galactic nuclei (AGNs), hosting powerful relativistic jet outflows, provide an excellent laboratory for studying jet physics. Very long baseline interferometry (VLBI) enables high-resolution imaging on milli-arcsecond (mas) and sub-mas scales, making it a powerful tool to explore the inner jet structure, shedding light on the for…
Reducing and Analyzing the PHAT Survey with the Cloud
Williams, Benjamin F.; Olsen, Knut; Rosema, Keith +2 more
We discuss the technical challenges we faced and the techniques we used to overcome them when reducing the Panchromatic Hubble Andromeda Treasury (PHAT) photometric data set on the Amazon Elastic Compute Cloud (EC2). We first describe the architecture of our photometry pipeline, which we found particularly efficient for reducing the data in multip…
XMM-Newton Survey of Local O VII Absorption Lines in the Spectra of Galactic X-Ray Sources
Fang, Taotao; Luo, Yang; Ma, Renyi
The detection of highly ionized metal absorption lines in the X-ray spectra of the Galactic X-ray binaries (XRBs) implies the distribution of hot gas along the sightline toward the background sources. However, the origin of this hot gas is still unclear: it can arise in the hot interstellar medium (ISM), or is intrinsic to the XRBs. In this paper,…
The Gemini/HST Galaxy Cluster Project: Redshift 0.2-1.0 Cluster Sample, X-Ray Data, and Optical Photometry Catalog
Jørgensen, Inger; Chiboucas, Kristin; Nielsen, Louise D. +2 more
The Gemini/HST Galaxy Cluster Project (GCP) covers 14 z = 0.2-1.0 clusters with X-ray luminosity of {L}500≥slant {10}44 {erg} {{{s}}}-1 in the 0.1-2.4 keV band. In this paper, we provide homogeneously calibrated X-ray luminosities, masses, and radii, and we present the complete catalog of the ground-based photometr…
The Chandra Deep Field-South Survey: 7 Ms Source Catalogs
Smail, I.; Hornschemeier, A. E.; Alexander, D. M. +23 more
We present X-ray source catalogs for the ≈7 Ms exposure of the Chandra Deep Field-South (CDF-S), which covers a total area of 484.2 arcmin2. Utilizing WAVDETECT for initial source detection and ACIS Extract for photometric extraction and significance assessment, we create a main source catalog containing 1008 sources that are detected i…
BAT AGN Spectroscopic Survey. V. X-Ray Properties of the Swift/BAT 70-month AGN Catalog
Treister, E.; Bauer, F. E.; Paltani, S. +18 more
Hard X-ray (≥10 keV) observations of active galactic nuclei (AGNs) can shed light on some of the most obscured episodes of accretion onto supermassive black holes. The 70-month Swift/BAT all-sky survey, which probes the 14-195 keV energy range, has currently detected 838 AGNs. We report here on the broadband X-ray (0.3-150 keV) characteristics of …
Revised Stellar Properties of Kepler Targets for the Q1-17 (DR25) Transit Detection Run
Batalha, Natalie M.; Bieryla, Allyson; Latham, David W. +14 more
The determination of exoplanet properties and occurrence rates using Kepler data critically depends on our knowledge of the fundamental properties (such as temperature, radius, and mass) of the observed stars. We present revised stellar properties for 197,096 Kepler targets observed between Quarters 1-17 (Q1-17), which were used for the final tran…
Individual Dynamical Masses of Ultracool Dwarfs
Dupuy, Trent J.; Liu, Michael C.
We present the full results of our decade-long astrometric monitoring programs targeting 31 ultracool binaries with component spectral types M7-T5. Joint analysis of resolved imaging from Keck Observatory and Hubble Space Telescope and unresolved astrometry from CFHT/WIRCam yields parallactic distances for all systems, robust orbit determinations …
CANDELS Multi-wavelength Catalogs: Source Identification and Photometry in the CANDELS Extended Groth Strip
Barro, Guillermo; Castellano, Marco; Fontana, Adriano +39 more
We present a 0.4-8 µm multi-wavelength photometric catalog in the Extended Groth Strip (EGS) field. This catalog is built on the Hubble Space Telescope (HST) WFC3 and ACS data from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS), and it incorporates the existing HST data from the All-wavelength Extended Groth str…