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

Nicholas Timmons, Asantha Cooray, Dominik A. Riechers, Hooshang Nayyeri, Hai Fu, Eric Jullo, Michael D Gladders, Maarten Baes UGent, R Shane Bussmann, Jae Calanog, et al. (2016) ASTROPHYSICAL JOURNAL. 829(1).
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 similar to 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 star-formation rate (SFR) of 390 +/- 60 M-circle dot yr(-1) and a stellar mass of 1.1 +/- 0.4 x 10(11) M-circle dot. 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-circle dot pc(-2), and similar to 12 +/- 7 M-circle dot 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.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
cosmology: observations, galaxies: evolution, infrared: galaxies, submillimeter: galaxies, DEEP-FIELD-SOUTH, LUMINOUS SUBMILLIMETER GALAXIES, SEQUENCE CLUSTER SURVEY, MOLECULAR GAS, FORMING GALAXIES, HIGH-REDSHIFT, INFRARED-EMISSION, MASSIVE GALAXIES, FORMATION RATES, STELLAR MASSES
journal title
ASTROPHYSICAL JOURNAL
Astrophys. J.
volume
829
issue
1
article number
21
pages
11 pages
Web of Science type
Article
Web of Science id
000385374500021
ISSN
0004-637X
DOI
10.3847/0004-637x/829/1/21
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8503165
handle
http://hdl.handle.net/1854/LU-8503165
date created
2017-01-20 13:01:38
date last changed
2017-02-28 15:23:53
@article{8503165,
  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 similar to 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 star-formation rate (SFR) of 390 +/- 60 M-circle dot yr(-1) and a stellar mass of 1.1 +/- 0.4 x 10(11) M-circle dot. 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-circle dot pc(-2), and similar to 12 +/- 7 M-circle dot 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.},
  articleno    = {21},
  author       = {Timmons, Nicholas and Cooray, Asantha and Riechers, Dominik A. and Nayyeri, Hooshang and Fu, Hai and Jullo, Eric and Gladders, Michael D and Baes, Maarten and Bussmann, R Shane and Calanog, Jae and Clements, David L and da Cunha, Elisabete and Dye, Simon and Eales, Stephen A and Furlanetto, Cristina and Gonzalez-Nuevo, Joaquin and Greenslade, Joshua and Gurwell, Mark and Messias, Hugo and Micha\unmatched{0142}owski, Micha\unmatched{0142} J and Oteo, Iv{\'a}n and P{\'e}rez-Fournon, Ismael and Scott, Douglas and Valiante, Elisabetta},
  issn         = {0004-637X },
  journal      = {ASTROPHYSICAL JOURNAL},
  keyword      = {cosmology: observations,galaxies: evolution,infrared: galaxies,submillimeter: galaxies,DEEP-FIELD-SOUTH,LUMINOUS SUBMILLIMETER GALAXIES,SEQUENCE CLUSTER SURVEY,MOLECULAR GAS,FORMING GALAXIES,HIGH-REDSHIFT,INFRARED-EMISSION,MASSIVE GALAXIES,FORMATION RATES,STELLAR MASSES},
  language     = {eng},
  number       = {1},
  pages        = {11},
  title        = {Multi-wavelength lens reconstruction of a Planck and Herschel-detected star-bursting galaxy},
  url          = {http://dx.doi.org/10.3847/0004-637x/829/1/21},
  volume       = {829},
  year         = {2016},
}

Chicago
Timmons, Nicholas, Asantha Cooray, Dominik A. Riechers, Hooshang Nayyeri, Hai Fu, Eric Jullo, Michael D Gladders, et al. 2016. “Multi-wavelength Lens Reconstruction of a Planck and Herschel-detected Star-bursting Galaxy.” Astrophysical Journal 829 (1).
APA
Timmons, N., Cooray, A., Riechers, D. A., Nayyeri, H., Fu, H., Jullo, E., Gladders, M. D., et al. (2016). Multi-wavelength lens reconstruction of a Planck and Herschel-detected star-bursting galaxy. ASTROPHYSICAL JOURNAL, 829(1).
Vancouver
1.
Timmons N, Cooray A, Riechers DA, Nayyeri H, Fu H, Jullo E, et al. Multi-wavelength lens reconstruction of a Planck and Herschel-detected star-bursting galaxy. ASTROPHYSICAL JOURNAL. 2016;829(1).
MLA
Timmons, Nicholas, Asantha Cooray, Dominik A. Riechers, et al. “Multi-wavelength Lens Reconstruction of a Planck and Herschel-detected Star-bursting Galaxy.” ASTROPHYSICAL JOURNAL 829.1 (2016): n. pag. Print.