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PLCK G165.7+67.0: Analysis of a Massive Lensing Cluster in a Hubble Space Telescope Census of Submillimeter Giant Arcs Selected Using Planck/Herschel

Frye, Brenda L.; Pascale, Massimo; Qin, Yujing; Zitrin, Adi; Diego, José; Walth, Greg; Yan, Haojing; Conselice, Christopher J.; Alpaslan, Mehmet; Bauer, Adam; Busoni, Lorenzo; Coe, Dan; Cohen, Seth H.; Dole, Hervé; Donahue, Megan; Georgiev, Iskren; Jansen, Rolf A.; Limousin, Marceau; Livermore, Rachael; Norman, Dara; Rabien, Sebastian; Windhorst, Rogier A.

PLCK G165.7+67.0: Analysis of a Massive Lensing Cluster in a Hubble Space Telescope Census of Submillimeter Giant Arcs Selected Using Planck/Herschel Thumbnail


Authors

Brenda L. Frye

Massimo Pascale

Yujing Qin

Adi Zitrin

José Diego

Greg Walth

Haojing Yan

Christopher J. Conselice

Mehmet Alpaslan

Adam Bauer

Lorenzo Busoni

Dan Coe

Seth H. Cohen

Hervé Dole

Megan Donahue

Iskren Georgiev

Rolf A. Jansen

Marceau Limousin

Rachael Livermore

Dara Norman

Sebastian Rabien

Rogier A. Windhorst



Abstract

© 2019. The American Astronomical Society. All rights reserved.. We present Hubble Space Telescope WFC3-IR imaging in the fields of six apparently bright dusty star-forming galaxies (DSFGs) at z = 2-4 identified by their rest-frame far-infrared colors using the Planck and Herschel space facilities. We detect near-infrared counterparts for all six submillimeter sources, allowing us to undertake strong-lensing analyses. One field in particular stands out for its prominent giant arcs, PLCK G165.7+67.0 (G165). After combining the color and morphological information, we identify 11 sets of image multiplicities in this one field. We construct a strong-lensing model constrained by this lensing evidence, which uncovers a bimodal spatial mass distribution, and from which we measure a mass of (2.6 ±0.11) ×10 14 M o within ∼250 kpc. The bright (S 350 ≈ 750 mJy) DSFG appears as two images: a giant arc with a spatial extent of that is merging with the critical curve, and a lower-magnification counterimage that is detected in our new longer-wavelength ground- and space-based imaging data. Using our ground-based spectroscopy, we calculate a dynamical mass of M o to the same fixed radius, although this value may be inflated relative to the true value if the velocity distribution is enhanced in the line-of-sight direction. We suggest that the bimodal mass taken in combination with the weak X-ray flux and low SZ decrement may be explained as a pre-merger for which the intracluster gas is diluted along the line of sight, while the integrated surface mass density is supercritical to strong-lensing effects.

Citation

Frye, B. L., Pascale, M., Qin, Y., Zitrin, A., Diego, J., Walth, G., …Windhorst, R. A. (2019). PLCK G165.7+67.0: Analysis of a Massive Lensing Cluster in a Hubble Space Telescope Census of Submillimeter Giant Arcs Selected Using Planck/Herschel. Astrophysical Journal, 871(1), Article 51. https://doi.org/10.3847/1538-4357/aaeff7

Journal Article Type Article
Acceptance Date Nov 7, 2018
Online Publication Date Jan 21, 2019
Publication Date Jan 21, 2019
Deposit Date Mar 13, 2019
Publicly Available Date Mar 13, 2019
Journal Astrophysical Journal
Print ISSN 0004-637X
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 871
Issue 1
Article Number 51
DOI https://doi.org/10.3847/1538-4357/aaeff7
Public URL https://nottingham-repository.worktribe.com/output/1636081
Publisher URL https://iopscience.iop.org/article/10.3847/1538-4357/aaeff7/meta
Additional Information Journal title: The Astrophysical Journal; Article type: paper; Article title: PLCK G165.7+67.0: Analysis of a Massive Lensing Cluster in a Hubble Space Telescope Census of Submillimeter Giant Arcs Selected Using Planck/Herschel; Copyright information: © 2019. The American Astronomical Society. All rights reserved.; Date received: 2018-05-10; Date accepted: 2018-11-07; Online publication date: 2019-01-21
Contract Date Mar 13, 2019

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