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Stacked Average Far-infrared Spectrum of Dusty Star-forming Galaxies from the Herschel/SPIRE Fourier Transform Spectrometer

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Stacked Average Far-infrared Spectrum of Dusty Star-forming Galaxies from the Herschel/SPIRE Fourier Transform Spectrometer. / Wilson, Derek; Cooray, Asantha; Nayyeri, Hooshang et al.
In: The Astrophysical Journal, Vol. 848, No. 1, 30, 09.10.2017.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Wilson, D, Cooray, A, Nayyeri, H, Bonato, M, Bradford, CM, Clements, DL, De Zotti, G, Díaz-Santos, T, Farrah, D, Magdis, G, Michałowski, MJ, Pearson, C, Rigopoulou, D, Valtchanov, I, Wang, L & Wardlow, J 2017, 'Stacked Average Far-infrared Spectrum of Dusty Star-forming Galaxies from the Herschel/SPIRE Fourier Transform Spectrometer', The Astrophysical Journal, vol. 848, no. 1, 30. https://doi.org/10.3847/1538-4357/aa8cc7

APA

Wilson, D., Cooray, A., Nayyeri, H., Bonato, M., Bradford, C. M., Clements, D. L., De Zotti, G., Díaz-Santos, T., Farrah, D., Magdis, G., Michałowski, M. J., Pearson, C., Rigopoulou, D., Valtchanov, I., Wang, L., & Wardlow, J. (2017). Stacked Average Far-infrared Spectrum of Dusty Star-forming Galaxies from the Herschel/SPIRE Fourier Transform Spectrometer. The Astrophysical Journal, 848(1), Article 30. https://doi.org/10.3847/1538-4357/aa8cc7

Vancouver

Wilson D, Cooray A, Nayyeri H, Bonato M, Bradford CM, Clements DL et al. Stacked Average Far-infrared Spectrum of Dusty Star-forming Galaxies from the Herschel/SPIRE Fourier Transform Spectrometer. The Astrophysical Journal. 2017 Oct 9;848(1):30. doi: 10.3847/1538-4357/aa8cc7

Author

Wilson, Derek ; Cooray, Asantha ; Nayyeri, Hooshang et al. / Stacked Average Far-infrared Spectrum of Dusty Star-forming Galaxies from the Herschel/SPIRE Fourier Transform Spectrometer. In: The Astrophysical Journal. 2017 ; Vol. 848, No. 1.

Bibtex

@article{3470a1942a8749c0b7e13046e322a2f0,
title = "Stacked Average Far-infrared Spectrum of Dusty Star-forming Galaxies from the Herschel/SPIRE Fourier Transform Spectrometer",
abstract = "We present stacked average far-infrared spectra of a sample of 197 dusty star-forming galaxies (DSFGs) at 0.005<z<4 using about 90% of the Herschel Space Observatory SPIRE Fourier Transform Spectrometer (FTS) extragalactic data archive based on 3.5 years of science operations. These spectra explore an observed-frame 447-1568 GHz frequency range, allowing us to observe the main atomic and molecular lines emitted by gas in the interstellar medium. The sample is subdivided into redshift bins, and a subset of the bins are stacked by infrared luminosity as well. These stacked spectra are used to determine the average gas density and radiation field strength in the photodissociation regions (PDRs) of DSFGs. For the low-redshift sample, we present the average spectral line energy distributions of CO and H2O rotational transitions and consider PDR conditions based on observed [C I] 370 and 609 μm, and CO (7-6) lines. For the high-z (0.8<z<4) sample, PDR models suggest a molecular gas distribution in the presence of a radiation field that is at least a factor of 103 larger than the Milky Way and with a neutral gas density of roughly {10}4.5-{10}5.5 cm-3. The corresponding PDR models for the low-z sample suggest a UV radiation field and gas density comparable to those at high-z. Given the challenges in obtaining adequate far-infrared observations, the stacked average spectra we present here will remain the measurements with the highest signal-to-noise ratio for at least a decade and a half until the launch of the next far-infrared facility. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.",
keywords = "galaxies: high-redshift, galaxies: ISM, ISM: general",
author = "Derek Wilson and Asantha Cooray and Hooshang Nayyeri and Matteo Bonato and Bradford, {Charles M.} and Clements, {David L.} and {De Zotti}, Gianfranco and Tanio D{\'i}az-Santos and Duncan Farrah and Georgios Magdis and Micha{\l}owski, {Micha{\l} J.} and Chris Pearson and Dimitra Rigopoulou and Ivan Valtchanov and Lingyu Wang and Julie Wardlow",
note = "{\textcopyright} 2017. The American Astronomical Society. All rights reserved",
year = "2017",
month = oct,
day = "9",
doi = "10.3847/1538-4357/aa8cc7",
language = "English",
volume = "848",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing",
number = "1",

}

RIS

TY - JOUR

T1 - Stacked Average Far-infrared Spectrum of Dusty Star-forming Galaxies from the Herschel/SPIRE Fourier Transform Spectrometer

AU - Wilson, Derek

AU - Cooray, Asantha

AU - Nayyeri, Hooshang

AU - Bonato, Matteo

AU - Bradford, Charles M.

AU - Clements, David L.

AU - De Zotti, Gianfranco

AU - Díaz-Santos, Tanio

AU - Farrah, Duncan

AU - Magdis, Georgios

AU - Michałowski, Michał J.

AU - Pearson, Chris

AU - Rigopoulou, Dimitra

AU - Valtchanov, Ivan

AU - Wang, Lingyu

AU - Wardlow, Julie

N1 - © 2017. The American Astronomical Society. All rights reserved

PY - 2017/10/9

Y1 - 2017/10/9

N2 - We present stacked average far-infrared spectra of a sample of 197 dusty star-forming galaxies (DSFGs) at 0.005<z<4 using about 90% of the Herschel Space Observatory SPIRE Fourier Transform Spectrometer (FTS) extragalactic data archive based on 3.5 years of science operations. These spectra explore an observed-frame 447-1568 GHz frequency range, allowing us to observe the main atomic and molecular lines emitted by gas in the interstellar medium. The sample is subdivided into redshift bins, and a subset of the bins are stacked by infrared luminosity as well. These stacked spectra are used to determine the average gas density and radiation field strength in the photodissociation regions (PDRs) of DSFGs. For the low-redshift sample, we present the average spectral line energy distributions of CO and H2O rotational transitions and consider PDR conditions based on observed [C I] 370 and 609 μm, and CO (7-6) lines. For the high-z (0.8<z<4) sample, PDR models suggest a molecular gas distribution in the presence of a radiation field that is at least a factor of 103 larger than the Milky Way and with a neutral gas density of roughly {10}4.5-{10}5.5 cm-3. The corresponding PDR models for the low-z sample suggest a UV radiation field and gas density comparable to those at high-z. Given the challenges in obtaining adequate far-infrared observations, the stacked average spectra we present here will remain the measurements with the highest signal-to-noise ratio for at least a decade and a half until the launch of the next far-infrared facility. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

AB - We present stacked average far-infrared spectra of a sample of 197 dusty star-forming galaxies (DSFGs) at 0.005<z<4 using about 90% of the Herschel Space Observatory SPIRE Fourier Transform Spectrometer (FTS) extragalactic data archive based on 3.5 years of science operations. These spectra explore an observed-frame 447-1568 GHz frequency range, allowing us to observe the main atomic and molecular lines emitted by gas in the interstellar medium. The sample is subdivided into redshift bins, and a subset of the bins are stacked by infrared luminosity as well. These stacked spectra are used to determine the average gas density and radiation field strength in the photodissociation regions (PDRs) of DSFGs. For the low-redshift sample, we present the average spectral line energy distributions of CO and H2O rotational transitions and consider PDR conditions based on observed [C I] 370 and 609 μm, and CO (7-6) lines. For the high-z (0.8<z<4) sample, PDR models suggest a molecular gas distribution in the presence of a radiation field that is at least a factor of 103 larger than the Milky Way and with a neutral gas density of roughly {10}4.5-{10}5.5 cm-3. The corresponding PDR models for the low-z sample suggest a UV radiation field and gas density comparable to those at high-z. Given the challenges in obtaining adequate far-infrared observations, the stacked average spectra we present here will remain the measurements with the highest signal-to-noise ratio for at least a decade and a half until the launch of the next far-infrared facility. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

KW - galaxies: high-redshift

KW - galaxies: ISM

KW - ISM: general

U2 - 10.3847/1538-4357/aa8cc7

DO - 10.3847/1538-4357/aa8cc7

M3 - Journal article

VL - 848

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 30

ER -