A5082728251- Gamma-ray bursts and supernovae
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Adaptive optics and wavefront sensing
- GNSS positioning and interference
- Astronomical Observations and Instrumentation
- Big Data Technologies and Applications
- Scientific Research and Discoveries
- Astrophysical Phenomena and Observations
- Geophysics and Gravity Measurements
- Astrophysics and Cosmic Phenomena
- Parallel Computing and Optimization Techniques
- Advanced Data Storage Technologies
- Meteorological Phenomena and Simulations
- Advanced Semiconductor Detectors and Materials
- Galaxies: Formation, Evolution, Phenomena
- Air Quality Monitoring and Forecasting
- Gaussian Processes and Bayesian Inference
- Cardiac Imaging and Diagnostics
- Atmospheric and Environmental Gas Dynamics
- CCD and CMOS Imaging Sensors
- Dark Matter and Cosmic Phenomena
University of Pittsburgh
2018-2022
U.S. National Science Foundation
2018
Kitt Peak National Observatory
2018
Association of Universities For Research In Astronomy
2018
Abstract We describe the simulated sky survey underlying second data challenge (DC2) carried out in preparation for analysis of Vera C. Rubin Observatory Legacy Survey Space and Time (LSST) by LSST Dark Energy Science Collaboration (LSST DESC). Significant connections across multiple science domains will be a hallmark LSST; DC2 program represents unique modeling effort that stresses this interconnectivity way has not been attempted before. This encompasses full end-to-end approach: starting...
LSST will open new vistas for cosmology in the next decade, but it cannot reach its full potential without data from other telescopes. Cosmological constraints can be greatly enhanced using wide-field ($>20$ deg$^2$ total survey area), highly-multiplexed optical and near-infrared multi-object spectroscopy (MOS) on 4-15m This could come form of suitably-designed large surveys and/or community access to add targets existing projects. First, photometric redshifts calibrated with high precision...
In preparation for cosmological analyses of the Vera C. Rubin Observatory Legacy Survey Space and Time (LSST), LSST Dark Energy Science Collaboration (LSST DESC) has created a 300 deg$^2$ simulated survey as part an effort called Data Challenge 2 (DC2). The DC2 sky survey, in six optical bands with observations following reference observing cadence, was processed Pipelines (19.0.0). this Note, we describe public data release resulting object catalogs coadded images five years along...
More luminous Type Ia supernovae (SNe Ia) prefer less massive hosts and regions of higher star formation. This correlation is inverted during width-color-luminosity light curve standardization resulting in step-like biases distance measurements with respect to host properties. Using the PISCO supernova sample SDSS, GALEX, 2MASS photometry, we compare stellar mass specific formation rate (sSFR) from different observation methods, including local vs. global, fitting techniques measure their...
We present a Python package, pwv_kpno, which provides models for the atmospheric transmission due to precipitable water vapor (PWV) at user-specified sites. Using ground-based photometric observations taken between 3000 and 12,000 Å can be corrected effects PWV. Atmospheric in optical near-infrared is highly dependent on PWV column density along line of sight. By measuring delay dual-band GPS signals through atmosphere, SuomiNet project accurate measurements hundreds locations around world....
Abstract Dual-band Global Positioning Satellite (GPS) measurements of precipitable water vapor (PWV) at the Kitt Peak National Observatory predict overall per-image sensitivity Mayall z -band Legacy Survey (MzLS). The variation in brightness individual stars is strongly correlated with measured PWV and color star. Synthetic stellar spectra through TAPAS transmission models successfully observed PWV-induced photometric variation. We find that absorption can be well approximated by a linear...
Single-object imaging and spectroscopy on telescopes with apertures ranging from ~4 m to 40 have the potential greatly enhance cosmological constraints that can be obtained LSST. Two major probes will benefit LSST follow-up: accurate spectrophotometry for nearby distant Type Ia supernovae expand distance lever arm by unlocking constraining power of high-z supernovae; cosmology time delays strongly-lensed quasars require additional high-cadence supplement LSST, adaptive optics or lens source...
The use of SNe Ia to measure cosmological parameters has grown significantly over the past two decades. However, there exists a significant diversity in SN population that is not well understood. Overluminous 1991T-like and subluminous 1991bg-like objects are characteristic examples peculiar SNe. identification classification such an important step studying what makes them unique from remaining population. With upcoming Vera C. Rubin Observatory promising on order million new 10 year survey,...
We here show that dual-band GPS measurements of precipitable water vapor (PWV) at KPNO predict the overall per-image sensitivity Mayall z-band Legacy Survey (MzLS). The variation in brightness individual stars is strongly correlated with measured PWV and color star. use synthetic stellar spectra TAPAS transmission models to expected PWV-induced photometric errors find good agreement observations. also absorption can be well-approximated by a linear relationship PWV_eff present an update on...