TY - JOUR
T1 - Weak Lensing in the Blue
T2 - A Counter-intuitive Strategy for Stratospheric Observations
AU - Shaaban, Mohamed M.
AU - Gill, Ajay S.
AU - McCleary, Jacqueline
AU - Massey, Richard J.
AU - Benton, Steven J.
AU - Brown, Anthony M.
AU - Damaren, Christopher J.
AU - Eifler, Tim
AU - Fraisse, Aurelien A.
AU - Everett, Spencer
AU - Galloway, Mathew N.
AU - Henderson, Michael
AU - Holder, Bradley
AU - Huff, Eric M.
AU - Jauzac, Mathilde
AU - Jones, William C.
AU - Lagattuta, David
AU - Leung, Jason S.Y.
AU - Li, Lun
AU - Thuy, Thuy Vy
AU - Nagy, Johanna M.
AU - Netterfield, C. Barth
AU - Redmond, Susan F.
AU - Rhodes, Jason D.
AU - Robertson, Andrew
AU - Schmoll, Jürgen
AU - Sirks, Ellen
AU - Sivanandam, Suresh
N1 - Funding Information:
Support for the development of SuperBIT is provided by NASA through APRA grant NNX16AF65G. Launch and operational support for the sequence of test flights from Palestine, Texas are provided by the Columbia Scientific Balloon Facility (CSBF) under contract from NASA’s Balloon Program Office (BPO). Launch and operational support for test flights from Timmins, Ontario are provided by the Centre National d’Études Spatiales (CNES) and the Canadian Space Agency (CSA).
Funding Information:
Support for the development of SuperBIT is provided by NASA through APRA grant NNX16AF65G. Launch and operational support for the sequence of test flights from Palestine, Texas are provided by the Columbia Scientific Balloon Facility (CSBF) under contract from NASA’s Balloon Program Office (BPO). Launch and operational support for test flights from Timmins, Ontario are provided by the Centre National d’Études Spatiales (CNES) and the Canadian Space Agency (CSA).
Funding Information:
J.R., E.H., and S.E. are supported by JPL, which is run under a contract by Caltech for NASA. Canadian coauthors acknowledge support from the Canadian Institute for Advanced Research (CIFAR) as well as the Natural Science and Engineering Research Council (NSERC). The Dunlap Institute is funded through an endowment established by the David Dunlap family and the University of Toronto. UK coauthors acknowledge funding from the Durham University Astronomy Projects Award, STFC [grant ST/P000541/1], and the Royal Society [grants UF150687 and RGF/EA/180026].
Publisher Copyright:
© 2022. The Author(s). Published by the American Astronomical Society.
PY - 2022/12/1
Y1 - 2022/12/1
N2 - The statistical power of weak lensing measurements is principally driven by the number of high-redshift galaxies whose shapes are resolved. Conventional wisdom and physical intuition suggest this is optimized by deep imaging at long (red or near-IR) wavelengths, to avoid losing redshifted Balmer-break and Lyman-break galaxies. We use the synthetic Emission Line (“EL”)-COSMOS catalog to simulate lensing observations using different filters, from various altitudes. Here were predict the number of exposures to achieve a target z ≳ 0.3 source density, using off-the-shelf and custom filters. Ground-based observations are easily better at red wavelengths, as (more narrowly) are space-based observations. However, we find that SuperBIT, a diffraction-limited observatory operating in the stratosphere, should instead perform its lensing-quality observations at blue wavelengths.
AB - The statistical power of weak lensing measurements is principally driven by the number of high-redshift galaxies whose shapes are resolved. Conventional wisdom and physical intuition suggest this is optimized by deep imaging at long (red or near-IR) wavelengths, to avoid losing redshifted Balmer-break and Lyman-break galaxies. We use the synthetic Emission Line (“EL”)-COSMOS catalog to simulate lensing observations using different filters, from various altitudes. Here were predict the number of exposures to achieve a target z ≳ 0.3 source density, using off-the-shelf and custom filters. Ground-based observations are easily better at red wavelengths, as (more narrowly) are space-based observations. However, we find that SuperBIT, a diffraction-limited observatory operating in the stratosphere, should instead perform its lensing-quality observations at blue wavelengths.
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U2 - 10.3847/1538-3881/ac9b1c
DO - 10.3847/1538-3881/ac9b1c
M3 - Article
AN - SCOPUS:85142379008
SN - 0004-6256
VL - 164
JO - Astronomical Journal
JF - Astronomical Journal
IS - 6
M1 - 245
ER -