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pro vyhledávání: '"Crenshaw, John"'
Autor:
Hang, Qianjun, Joachimi, Benjamin, Charles, Eric, Crenshaw, John Franklin, Larsen, Patricia, Malz, Alex I., Schmidt, Sam, Yan, Ziang, Zhang, Tianqing, Collaboration, the LSST Dark Energy Science
We investigate the impact of spatial survey non-uniformity on the galaxy redshift distributions for forthcoming data releases of the Rubin Observatory Legacy Survey of Space and Time (LSST). Specifically, we construct a mock photometry dataset degrad
Externí odkaz:
http://arxiv.org/abs/2409.02501
Autor:
Homar, Guillem Megias, Kahn, Steven M., Meyers, Joshua M., Crenshaw, John Franklin, Thomas, Sandrine J.
The Vera C. Rubin Observatory is a unique facility for survey astronomy that will soon be commissioned and begin operations. Crucial to many of its scientific goals is the achievement of sustained high image quality, limited only by the seeing at the
Externí odkaz:
http://arxiv.org/abs/2406.04656
Autor:
Crenshaw, John Franklin, Kalmbach, J. Bryce, Gagliano, Alexander, Yan, Ziang, Connolly, Andrew J., Malz, Alex I., Schmidt, Samuel J., Collaboration, The LSST Dark Energy Science
Evaluating the accuracy and calibration of the redshift posteriors produced by photometric redshift (photo-z) estimators is vital for enabling precision cosmology and extragalactic astrophysics with modern wide-field photometric surveys. Evaluating p
Externí odkaz:
http://arxiv.org/abs/2405.04740
Autor:
Moskowitz, Irene, Gawiser, Eric, Crenshaw, John Franklin, Andrews, Brett H., Malz, Alex I., Schmidt, Samuel, Collaboration, The LSST Dark Energy Science
Publikováno v:
ApJL 967 L6 (2024)
Large imaging surveys will rely on photometric redshifts (photo-z's), which are typically estimated through machine learning methods. Currently planned spectroscopic surveys will not be deep enough to produce a representative training sample for LSST
Externí odkaz:
http://arxiv.org/abs/2402.15551
Autor:
Crenshaw, John Franklin, Connolly, Andrew J., Meyers, Joshua E., Kalmbach, J. Bryce, Homar, Guillem Megias, Ribeiro, Tiago, Suberlak, Krzysztof, Thomas, Sandrine, Tsai, Te-wei
Publikováno v:
AJ 167 86 (2024)
The Vera C. Rubin Observatory will, over a period of 10 years, repeatedly survey the southern sky. To ensure that images generated by Rubin meet the quality requirements for precision science, the observatory will use an Active Optics System (AOS) to
Externí odkaz:
http://arxiv.org/abs/2402.08094
Autor:
Lokken, Martine, Gagliano, Alexander, Narayan, Gautham, Hložek, Renée, Kessler, Richard, Crenshaw, John Franklin, Salo, Laura, Alves, Catarina S., Chatterjee, Deep, Vincenzi, Maria, Malz, Alex I., Collaboration, The LSST Dark Energy Science
As we observe a rapidly growing number of astrophysical transients, we learn more about the diverse host galaxy environments in which they occur. Host galaxy information can be used to purify samples of cosmological Type Ia supernovae, uncover the pr
Externí odkaz:
http://arxiv.org/abs/2206.02815
The accurate estimation of photometric redshifts is crucial to many upcoming galaxy surveys, for example the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). Almost all Rubin extragalactic and cosmological science requires accurate a
Externí odkaz:
http://arxiv.org/abs/2202.12775
The observing strategy of a galaxy survey influences the degree to which its resulting data can be used to accomplish any science goal. LSST is thus seeking metrics of observing strategies for multiple science cases in order to optimally choose a cad
Externí odkaz:
http://arxiv.org/abs/2104.08229
Estimating redshifts from broadband photometry is often limited by how accurately we can map the colors of galaxies to an underlying spectral template. Current techniques utilize spectrophotometric samples of galaxies or spectra derived from spectral
Externí odkaz:
http://arxiv.org/abs/2008.04291
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