Skip to main content

Research Repository

Advanced Search

Multi-wavelength lens construction of a Planck and Herschel-detected star-bursting galaxy

Timmons, Nicholas; Cooray, A.; Riechers, D.A.; Nayyeri, H.; Fu, Hai; Jullo, Eric; Gladders, Michael D.; Baes, Maarten; Bussmann, R.S.; Calanog, Jae; Clements, D.L.; da Cunha, E.; Dye, S.; Eales, S.A.; Furlanetto, C.; Gonzalez-Nuevo, J.; Greenslade, J.; Gurwell, M.; Messias, Hugo; Michalowski, M.J.; Oteo, I.; Pérez-Fournón, I.; Scott, Douglas; Valiante, E.

Authors

Nicholas Timmons

A. Cooray

D.A. Riechers

H. Nayyeri

Hai Fu

Eric Jullo

Michael D. Gladders

Maarten Baes

R.S. Bussmann

Jae Calanog

D.L. Clements

E. da Cunha

SIMON DYE Simon.Dye@nottingham.ac.uk
Associate Professor

S.A. Eales

C. Furlanetto

J. Gonzalez-Nuevo

J. Greenslade

M. Gurwell

Hugo Messias

M.J. Michalowski

I. Oteo

I. Pérez-Fournón

Douglas Scott

E. Valiante



Abstract

We present a source-plane reconstruction of a Herschel and Planck-detected gravitationally lensed dusty star-forming galaxy (DSFG) at z = 1.68 using Hubble, Submillimeter Array (SMA), and Keck observations. The background submillimeter galaxy (SMG) is strongly lensed by a foreground galaxy cluster at z = 0.997 and appears as an arc with a length of ∼15″ in the optical images. The continuum dust emission, as seen by SMA, is limited to a single knot within this arc. We present a lens model with source-plane reconstructions at several wavelengths to show the difference in magnification between the stars and dust, and highlight the importance of multi-wavelength lens models for studies involving lensed DSFGs. We estimate the physical properties of the galaxy by fitting the flux densities to model spectral energy distributions leading to a magnification-corrected starformation rate (SFR) of 390 ± 60 M yr−1 and a stellar mass of 1.1 ± 0.4 10 x 11 M. These values are consistent with high-redshift massive galaxies that have formed most of their stars already. The estimated gas-to-baryon fraction, molecular gas surface density, and SFR surface density have values of 0.43 ± 0.13, 350 ± 200 M pc−2, and ~ 12 7 M yr−1 kpc−2, respectively. The ratio of SFR surface density to molecular gas surface density puts this among the most star-forming systems, similar to other measured SMGs and local ULIRGs.

Journal Article Type Article
Publication Date Sep 16, 2016
Journal Astrophysical Journal
Print ISSN 0004-637X
Electronic ISSN 1538-4357
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 829
Issue 1
APA6 Citation Timmons, N., Cooray, A., Riechers, D., Nayyeri, H., Fu, H., Jullo, E., …Valiante, E. (2016). Multi-wavelength lens construction of a Planck and Herschel-detected star-bursting galaxy. Astrophysical Journal, 829(1), https://doi.org/10.3847/0004-637X/829/1/21
DOI https://doi.org/10.3847/0004-637X/829/1/21
Keywords cosmology: observations – galaxies: evolution – infrared: galaxies – submillimeter: galaxies
Publisher URL http://iopscience.iop.org/article/10.3847/0004-637X/829/1/21/meta
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

Files

Timmons_2016_ApJ_829_21.pdf (10.2 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





You might also like



Downloadable Citations

;