D. L. Shupe
A5088456706- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Astrophysics and Star Formation Studies
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Adaptive optics and wavefront sensing
- Calibration and Measurement Techniques
- Radio Astronomy Observations and Technology
- Astro and Planetary Science
- Pulsars and Gravitational Waves Research
- Scientific Research and Discoveries
- Particle Accelerators and Free-Electron Lasers
- Spectroscopy and Laser Applications
- Advanced Data Storage Technologies
- Computational Physics and Python Applications
- Scientific Computing and Data Management
- Superconducting and THz Device Technology
- Advanced Optical Sensing Technologies
- Geophysics and Gravity Measurements
- Atmospheric Ozone and Climate
- Particle Detector Development and Performance
- Spacecraft and Cryogenic Technologies
Infrared Processing and Analysis Center
2014-2023
California Institute of Technology
2013-2023
Institut für Palliative Care
2018
National Aeronautics and Space Administration
2013
Jet Propulsion Laboratory
1996-2010
Osservatorio Astrofisico di Catania
2010
National Institute for Astrophysics
2010
Cardiff University
2010
Palomar College
1995
TMT Observatory
1994
Abstract The Astropy Project supports and fosters the development of open-source openly developed Python packages that provide commonly needed functionality to astronomical community. A key element is core package astropy , which serves as foundation for more specialized projects packages. In this article, we summarize features in recent major release, version 5.0, updates on Project. We then discuss supporting a broader ecosystem interoperable packages, including connections with several...
Abstract The Astropy Project supports and fosters the development of open-source openly developed Python packages that provide commonly needed functionality to astronomical community. A key element is core package astropy , which serves as foundation for more specialized projects packages. In this article, we an overview organization project summarize features in package, recent major release, version 2.0. We then describe infrastructure designed facilitate support a broader ecosystem...
The Zwicky Transient Facility (ZTF) is a new optical time-domain survey that uses the Palomar 48 inch Schmidt telescope. A custom-built wide-field camera provides 47 deg2 field of view and 8 s readout time, yielding more than an order magnitude improvement in speed relative to its predecessor survey, Factory. We describe design implementation observing system. ZTF data system at Infrared Processing Analysis Center near-real-time reduction identify moving varying objects. outline analysis...
We present the SEDs of a hard X-ray selected sample containing 136 sources with F2-10 keV > 10-14 erg cm-2 s-1; 132 are AGNs. The detected in 1 deg2 area XMM-Newton Medium Deep Survey where optical data from VVDS and CFHTLS infrared SWIRE survey available. Based on SED fitting technique we derive photometric redshifts σ(1 + z) = 0.11 6% outliers identify AGN signatures 83% objects. This fraction is higher than derived when spectroscopic classification remaining 17% AGNs show star-forming...
The Herschel Multi-tiered Extragalactic Survey (HerMES) is a legacy programme designed to map set of nested fields totalling ∼380 deg2. Fields range in size from 0.01 ∼20 deg2, using the Herschel-Spectral and Photometric Imaging Receiver (SPIRE) (at 250, 350 500 μm) Herschel-Photodetector Array Camera Spectrometer (PACS) 100 160 μm), with an additional wider component 270 deg2 SPIRE alone. These bands cover peak redshifted thermal spectral energy distribution interstellar dust thus capture...
The SIRTF Wide‐Area Infrared Extragalactic Survey (SWIRE), the largest Legacy program, is a wide‐area imaging survey to trace evolution of dusty, star‐forming galaxies, evolved stellar populations, and active galactic nuclei (AGNs) as function environment, from redshifts z ∼ 3 current epoch. SWIRE will seven high‐latitude fields, totaling 60–65 deg2 in all bands: Array Camera (IRAC) 3.6, 4.5, 5.6, 8 μm Multiband Imaging Photometer for (MIPS) 24, 70, 160 μm. Extensive modeling suggests that...
Selection of active galactic nuclei (AGNs) in the infrared facilitates discovery AGNs whose optical emission is extinguished by dust.In this paper, we use Spitzer Space Telescope First Look Survey (FLS) to assess fraction with mid-infrared (MIR) luminosities that are comparable quasars and missed quasar surveys because dust obscuration.We begin using Sloan Digital Sky (SDSS) database identify 54 within 4 deg 2 extragalactic FLS.These occupy a distinct region MIR color space virtue their...
We exploit the deep and extended far infrared data sets (at 70, 100 160 um) of Herschel GTO PACS Evolutionary Probe (PEP) Survey, in combination with HERschel Multi tiered Extragalactic Survey (HerMES) at 250, 350 500 um, to derive evolution restframe 35 60 90 total (IR) luminosity functions (LFs) up z~4. detect very strong for IR LF combined a density evolution. In agreement previous findings, increases steeply z~1, then flattens between z~1 z~3 decrease z greater than 3. Galaxies different...
The Zwicky Transient Facility (ZTF) is a new robotic time-domain survey currently in progress using the Palomar 48-inch Schmidt Telescope. ZTF uses 47 square degree field with 600 megapixel camera to scan entire northern visible sky at rates of ~3760 degrees/hour median depths g ~ 20.8 and r 20.6 mag (AB, 5sigma 30 sec). We describe Science Data System that housed IPAC, Caltech. This comprises data-processing pipelines, alert production system, data archive, user interfaces for accessing...
We present the stellar calibrator sample and conversion from instrumental to physical units for 24 micron channel of Multiband Imaging Photometer Spitzer (MIPS). The primary calibrators are A stars, calibration factor based on those stars is 4.54*10^{-2} MJy sr^{-1} (DN/s)^{-1}, with a nominal uncertainty 2%. discuss data-reduction procedures required attain this accuracy; without these procdures, obtained using automated pipeline at Science Center 1.6% +/- 0.6% lower. extend work predict...
Using the Spitzer Space Telescope and Very Large Array (VLA), we present first direct evidence that well-known far-infrared/radio correlation is valid to cosmologically significant redshift. We also confirm, with improved statistics compared previous surveys, a similar result for mid-IR/radio correlation. explore dependence of monochromatic q24 q70 on z. The results were obtained by matching sources at 24 70 μm VLA 1.4 GHz microjansky radio First Look Survey (FLS). Spectroscopic redshifts...
We report on the sensitivity of SPIRE photometers <i>Herschel<i/> Space Observatory. Specifically, we measure confusion noise from observations taken during science demonstration phase Multi-tiered Extragalactic Survey. Confusion is defined to be spatial variation sky intensity in limit infinite integration time, and found consistent among different fields our survey at level 5.8, 6.3 6.8 mJy/beam 250, 350 500 <i>μ<i/>m, respectively. These results, together with measured instrument noise,...
We set out to determine the ratio, q(IR), of rest-frame 8-1000um flux, S(IR), monochromatic radio S(1.4GHz), for galaxies selected at far-IR and wavelengths, search signs that ratio evolves with redshift, luminosity or dust temperature, identify any far-IR-bright outliers - useful laboratories exploring why far-IR/radio correlation is generally so tight when prevailing theory suggests variations are almost inevitable. use flux-limited 250-um 1.4-GHz samples, obtained in GOODS-N using...
SPIRE, the Spectral and Photometric Imaging REceiver, is <i>Herschel<i/> Space Observatory's submillimetre camera spectrometer. It contains a three-band imaging photometer operating at 250, 350 500 <i>μ<i/>m, an Fourier-transform spectrometer (FTS) covering 194–671 <i>μ<i/>m (447-1550 GHz). In this paper we describe initial approach taken to absolute calibration of SPIRE instrument using combination emission from telescope itself modelled continuum solar system objects other astronomical...
Using the large multi-wavelength data set in chandra/SWIRE Survey (0.6 square degrees Lockman Hole), we show evidence for existence of highly obscured (Compton-thick) AGN, estimate a lower limit to their surface density and characterize properties. Two independent selection methods based on X-ray infrared spectral properties are presented. The two selected samples contain 1) 5 sources with hard spectra column densities > 10^24 cm-2, 2) 120 red AGN-dominated energy distributions (SEDs). We...
ABRIGED Herschel/SPIRE has provided confusion limited maps of deep fields at 250, 350, and 500um, as part the HerMES survey. Due to confusion, only a small fraction Cosmic Infrared Background can be resolved into individually-detected sources. Our goal is produce galaxy number counts redshift distributions below limit, which we then use place strong constraints on origins cosmic infrared background models evolution. We individually extracted bright SPIRE with method using positions, flux...
Emission at far-infrared wavelengths makes up a significant fraction of the total light detected from galaxies over age Universe. Herschel provides an opportunity for studying peak wavelength their emission. Our aim is to provide benchmark models galaxy population evolution and test pre-existing galaxies. With Multi-tiered Extra-galactic survey, HerMES, we have observed number fields different areas sensitivity using SPIRE instrument on Herschel. We determined counts down ~20 mJy....
We present the SWIRE Photometric Redshift Catalogue 1 025 119 redshifts of unprecedented reliability and accuracy comparable with or better than previous work. Our methodology is based on fixed galaxy quasi-stellar object templates applied to data at 0.36–4.5 μm, a set four infrared emission fitted excess 3.6–170 μm. The are initially empirical, but given greater physical validity by fitting star formation histories them, which also allows us estimate stellar masses. code involves two passes...
The <i>Herschel<i/> Space Observatory enables us to accurately measure the bolometric output of starburst galaxies and active galactic nuclei (AGN) by directly sampling peak their far-infrared (IR) emission. Here we examine whether spectral energy distribution (SED) dust temperature have strongly evolved over last 80% age Universe. We discuss possible consequences for determination star-formation rates (SFR) any evidence a major change in properties. use deep extragalactic surveys from 100...
Using Herschel data from the deepest SPIRE and PACS surveys (HerMES PEP) in COSMOS GOODS (N+S), we examine dust properties of IR-luminous (L_IR>10^10 L_sun) galaxies at 0.1<z<2 determine how these evolve with cosmic time. The unique angle this work is rigorous analysis survey selection effects, making first study star-formation-dominated, population within a framework almost entirely free biases. We find that have SEDs broad far-IR peaks characterised by cool/extended emission average...
We present the cross-identification and source photometry techniques used to process Herschel SPIRE imaging taken as part of Multi-Tiered Extragalactic Survey (HerMES). Cross-identifications are performed in map-space so minimise blending effects. make use a combination linear inversion model selection produce reliable catalogues based on Spitzer MIPS 24 micron positions. Testing simulations real observations show that this approach gives robust results for even faintest sources S250~10 mJy....
[Abridged]We exploit a large homogeneous dataset to derive self-consistent picture of IR emission based on the time-dependent 24, 15, 12 and 8micron monochromatic bolometric luminosity functions (LF) over 0<z<2.5 redshift range. Our analysis is combination data from deep Spitzer surveys in VVDS-SWIRE GOODS areas. To our limiting flux S(24)=400microJy derived sample includes 1494 sources, 666 904 sources brighter than S(24)=80microJy are catalogued GOODS-S GOODS-N, respectively, for total...