Journal article
JWST’s PEARLS: Dust Attenuation and Gravitational Lensing in the Backlit-galaxy System VV 191
WC Keel, RA Windhorst, RA Jansen, SH Cohen, J Summers, B Holwerda, ST Bradford, CD Robertson, G Ferrami, S Wyithe, H Yan, CJ Conselice, SP Driver, A Robotham, NA Grogin, CNA Willmer, AM Koekemoer, BL Frye, NP Hathi, RE Ryan Show all
Astronomical Journal | IOP Publishing Ltd | Published : 2023
Abstract
We derive the spatial and wavelength behavior of dust attenuation in the multiple-armed spiral galaxy VV 191b using backlighting by the superimposed elliptical system VV 191a in a pair with an exceptionally favorable geometry for this measurement. Imaging using the James Webb Space Telescope and Hubble Space Telescope spans the wavelength range 0.3-4.5 μm with high angular resolution, tracing the dust in detail from 0.6-1.5 μm. Distinct dust lanes continue well beyond the bright spiral arms, and trace a complex web, with a very sharp radial cutoff near 1.7 Petrosian radii. We present attenuation profiles and coverage statistics in each band at radii 14-21 kpc. We derive the attenuation law w..
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Grants
Awarded by National Science Foundation
Funding Acknowledgements
Spain. R.A.J., R.A.W., and S.H.C. acknowledge support from NASA JWST Interdisciplinary Scientist grants NAG5-12460, NNX14AN10G, and 80NSSC18K0200 from GSFC. C.N.A.W. acknowledges funding from the JWST/NIRCam contract NASS-0215 to the University of Arizona. We acknowledge support from the ERC Advanced Investigator Grant EPOCHS (788113), as well as a studentship from STFC. A.Z. acknowledges support by grant No. 2020750 from the United States -Israel Binational Science Foundation (BSF) and grant No. 2109066 from the United States National Science Foundation (NSF), and by the Ministry of Science & Technology, Israel. This research was supported by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013.