Resolving star-forming clumps in a z similar to 2 lensed galaxy: a pixelated Bayesian approach
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Resolving star-forming clumps in a z similar to 2 lensed galaxy : a pixelated Bayesian approach. / Sharma, Soniya; Richard, Johan; Yuan, Tiantian; Patricio, Vera; Kewley, Lisa; Rigby, Jane R.; Gupta, Anshu; Leethochawalit, Nicha.
I: Monthly Notices of the Royal Astronomical Society, Bind 505, Nr. 1, 01.07.2021, s. L1-L5.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Resolving star-forming clumps in a z similar to 2 lensed galaxy
T2 - a pixelated Bayesian approach
AU - Sharma, Soniya
AU - Richard, Johan
AU - Yuan, Tiantian
AU - Patricio, Vera
AU - Kewley, Lisa
AU - Rigby, Jane R.
AU - Gupta, Anshu
AU - Leethochawalit, Nicha
PY - 2021/7/1
Y1 - 2021/7/1
N2 - We present a pixelized source reconstruction method applied on integral field spectroscopic observations of gravitationally lensed galaxies. We demonstrate the effectiveness of this method in a case study on the clumpy morphology of a z similar to 2 lensed galaxy behind a group-scale lens. We use a Bayesian forward source modelling approach to reconstruct the surface brightness distribution of the source galaxy on a uniformly pixelized grid while accounting for the image point spread function. The pixelated approach is sensitive to clump sizes down to 100 pc and resolves smaller clump sizes with an improvement in the signal-to-noise ratio by almost a factor of 10 compared with more traditional ray-tracing approaches.
AB - We present a pixelized source reconstruction method applied on integral field spectroscopic observations of gravitationally lensed galaxies. We demonstrate the effectiveness of this method in a case study on the clumpy morphology of a z similar to 2 lensed galaxy behind a group-scale lens. We use a Bayesian forward source modelling approach to reconstruct the surface brightness distribution of the source galaxy on a uniformly pixelized grid while accounting for the image point spread function. The pixelated approach is sensitive to clump sizes down to 100 pc and resolves smaller clump sizes with an improvement in the signal-to-noise ratio by almost a factor of 10 compared with more traditional ray-tracing approaches.
KW - gravitational lensing: strong
KW - galaxies: evolution
KW - galaxies: high-redshift
KW - SPECTROSCOPY
KW - FIELDS
KW - RECONSTRUCTION
KW - SCALES
KW - MODEL
KW - MASS
U2 - 10.1093/mnrasl/slab040
DO - 10.1093/mnrasl/slab040
M3 - Journal article
VL - 505
SP - L1-L5
JO - Royal Astronomical Society. Monthly Notices
JF - Royal Astronomical Society. Monthly Notices
SN - 0035-8711
IS - 1
ER -
ID: 279186579