TY - JOUR
T1 - JINGLE, a JCMT legacy survey of dust and gas for galaxy evolution studies
T2 - II. SCUBA-2 850 μm data reduction and dust flux density catalogues
AU - Smith, Matthew W. L.
AU - Clark, Christopher J. R.
AU - Looze, Ilse De
AU - Lamperti, Isabella
AU - Saintonge, Amélie
AU - Wilson, Christine D.
AU - Accurso, Gioacchino
AU - Brinks, Elias
AU - Bureau, Martin
AU - Chung, Eun Jung
AU - Cigan, Phillip J.
AU - Clements, David L.
AU - Dharmawardena, Thavisha
AU - Fanciullo, Lapo
AU - Gao, Yang
AU - Gao, Yu
AU - Gear, Walter K.
AU - Gomez, Haley L.
AU - Greenslade, Joshua
AU - Hwang, Ho Seong
AU - Kemper, Francisca
AU - Lee, Jong Chul
AU - Li, Cheng
AU - Lin, Lihwai
AU - Liu, Lijie
AU - Molnár, Dániel Cs
AU - Mok, Angus
AU - Pan, Hsi-An
AU - Sargent, Mark
AU - Scicluna, Peter
AU - Smith, Connor M. A.
AU - Urquhart, Sheona
AU - Williams, Thomas G.
AU - Xiao, Ting
AU - Yang, Chentao
AU - Zhu, Ming
N1 - © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.
PY - 2019/7/1
Y1 - 2019/7/1
N2 - We present the SCUBA-2 850μ m component of JINGLE, the new JCMT large survey for dust and gas in nearby galaxies, which with 193 galaxies is the largest targeted survey of nearby galaxies at 850 μ m. We provide details of our SCUBA-2 data reduction pipeline, optimized for slightly extended sources, and including a calibration model adjusted to match conventions used in other far-infrared (FIR) data. We measure total integrated fluxes for the entire JINGLE sample in 10 infrared/submillimetre bands, including all WISE, Herschel-PACS, Herschel-SPIRE, and SCUBA-2 850 μ m maps, statistically accounting for the contamination by CO(J = 3-2) in the 850 μ m band. Of our initial sample of 193 galaxies, 191 are detected at 250 μ m with a ≥5σ significance. In the SCUBA-2 850 μ m band we detect 126 galaxies with ≥3σ significance. The distribution of the JINGLE galaxies in FIR/sub-millimetre colour-colour plots reveals that the sample is not well fit by single modified-blackbody models that assume a single dust-emissivity index (β). Instead, our new 850 μ m data suggest either that a large fraction of our objects require β < 1.5, or that a model allowing for an excess of sub-mm emission (e.g. a broken dust emissivity law, or a very cold dust component ≤10 K) is required. We provide relations to convert FIR colours to dust temperature and β for JINGLE-like galaxies. For JINGLE the FIR colours correlate more strongly with star-formation rate surface-density rather than the stellar surface-density, suggesting heating of dust is greater due to younger rather than older stellar-populations, consistent with the low proportion of early-type galaxies in the sample.
AB - We present the SCUBA-2 850μ m component of JINGLE, the new JCMT large survey for dust and gas in nearby galaxies, which with 193 galaxies is the largest targeted survey of nearby galaxies at 850 μ m. We provide details of our SCUBA-2 data reduction pipeline, optimized for slightly extended sources, and including a calibration model adjusted to match conventions used in other far-infrared (FIR) data. We measure total integrated fluxes for the entire JINGLE sample in 10 infrared/submillimetre bands, including all WISE, Herschel-PACS, Herschel-SPIRE, and SCUBA-2 850 μ m maps, statistically accounting for the contamination by CO(J = 3-2) in the 850 μ m band. Of our initial sample of 193 galaxies, 191 are detected at 250 μ m with a ≥5σ significance. In the SCUBA-2 850 μ m band we detect 126 galaxies with ≥3σ significance. The distribution of the JINGLE galaxies in FIR/sub-millimetre colour-colour plots reveals that the sample is not well fit by single modified-blackbody models that assume a single dust-emissivity index (β). Instead, our new 850 μ m data suggest either that a large fraction of our objects require β < 1.5, or that a model allowing for an excess of sub-mm emission (e.g. a broken dust emissivity law, or a very cold dust component ≤10 K) is required. We provide relations to convert FIR colours to dust temperature and β for JINGLE-like galaxies. For JINGLE the FIR colours correlate more strongly with star-formation rate surface-density rather than the stellar surface-density, suggesting heating of dust is greater due to younger rather than older stellar-populations, consistent with the low proportion of early-type galaxies in the sample.
KW - astro-ph.GA
KW - submillimetre: ISM
KW - galaxies: ISM
KW - galaxies: photometry
KW - galaxies: spiral
UR - http://www.scopus.com/inward/record.url?scp=85072263098&partnerID=8YFLogxK
U2 - 10.1093/mnras/stz1102
DO - 10.1093/mnras/stz1102
M3 - Article
SN - 0035-8711
VL - 486
SP - 4166
EP - 4185
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -