SJO_797_2_138.pdf (6.21 MB)
Lens models of Herschel-selected galaxies from high-resolution near-IR observations
journal contribution
posted on 2023-06-08, 19:59 authored by J A Calanog, H Fu, A Cooray, J Wardlow, B Ma, D Farrah, Seb OliverSeb Oliver, et alWe present Keck-Adaptive Optics and Hubble Space Telescope high resolution near-infrared (IR) imaging for 500 µm bright candidate lensing systems identified by the Herschel Multi-tiered Extragalactic Survey and Herschel Astrophysical Terahertz Large Area Survey. Out of 87 candidates with near-IR imaging, 15 (~17%) display clear near-IR lensing morphologies. We present near-IR lens models to reconstruct and recover basic rest-frame optical morphological properties of the background galaxies from 12 new systems. Sources with the largest near-IR magnification factors also tend to be the most compact, consistent with the size bias predicted from simulations and previous lensing models for submillimeter galaxies (SMGs). For four new sources that also have high-resolution submillimeter maps, we test for differential lensing between the stellar and dust components and find that the 880 µm magnification factor (µ880) is ~1.5 times higher than the near-IR magnification factor (µNIR), on average. We also find that the stellar emission is ~2 times more extended in size than dust. The rest-frame optical properties of our sample of Herschel-selected lensed SMGs are consistent with those of unlensed SMGs, which suggests that the two populations are similar.
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- Published
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- Published version
Journal
The Astrophysical JournalISSN
0004-637XPublisher
AAS/IOPExternal DOI
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2Volume
797Department affiliated with
- Physics and Astronomy Publications
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First and Sussex authors listed above. Full author details can be found at http://dx.doi.org/10.1088/0004-637X/797/2/138Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2015-02-09First Open Access (FOA) Date
2015-02-09First Compliant Deposit (FCD) Date
2015-02-09Usage metrics
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