Altmetric

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

File Description SizeFormat 
Timmons_2016_ApJ_829_21.pdfPublished version10 MBAdobe PDFView/Open
Title: Multi-wavelength lens reconstruction of a Planck and Herschel-detected star-bursting galaxy
Authors: Timmons, N
Cooray, A
Riechers, DA
Nayyeri, H
Fu, H
Jullo, E
Gladders, MD
Baes, M
Bussmann, RS
Calanog, J
Clements, DL
Da Cunha, E
Dye, S
Eales, SA
Furlanetto, C
Gonzalez-Nuevo, J
Greenslade, J
Gurwell, M
Messias, H
Michalowski, MJ
Oteo, I
Perez-Fournon, I
Scott, D
Valiante, E
Item Type: Journal Article
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 star-formation rate (SFR) of 390 ± 60 M ${}_{\odot }$ yr−1 and a stellar mass of $1.1\pm 0.4\times {10}^{11}$ ${M}_{\odot }$. 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 ${M}_{\odot }$ pc−2, and $\sim 12\pm 7\,$ M ${}_{\odot }$ 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.
Issue Date: 16-Sep-2016
Date of Acceptance: 15-Jul-2016
URI: http://hdl.handle.net/10044/1/42854
DOI: http://dx.doi.org/10.3847/0004-637X/829/1/21
ISSN: 1538-4357
Publisher: American Astronomical Society
Journal / Book Title: Astrophysical Journal
Volume: 829
Issue: 1
Copyright Statement: © 2016 The American Astronomical Society. All rights reserved.
Sponsor/Funder: Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Funder's Grant Number: SPIRE/SOW/07020F
ST/F01239X/1
ST/F012373/1
ST/H001239/1
ST/G001901/1
ST/G003874/1
ST/J004812/1
ST/J001368/1
ST/K006401/1
ST/K004131/1
ST/M003558/1
ST/P000568/1
Keywords: Science & Technology
Physical Sciences
Astronomy & Astrophysics
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
0201 Astronomical And Space Sciences
0305 Organic Chemistry
0306 Physical Chemistry (Incl. Structural)
Publication Status: Published
Open Access location: https://arxiv.org/pdf/1512.03059
Article Number: ARTN 21
Appears in Collections:Physics
Astrophysics



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commonsx