Far-infrared Herschel SPIRE spectroscopy of lensed starbursts reveals physical conditions of ionized gas
The most intensively star-forming galaxies are extremely luminous at far-infrared ( FIR) wavelengths, highly obscured at optical and ultraviolet wavelengths, and lie at z >= 1-3. We present a programme of FIR spectroscopic observations with the SPIRE FTS, as well as photometric observations with...
Published in: | Monthly Notices of the Royal Astronomical Society |
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Main Authors: | , , , , , , , , , , , , , , , , , |
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Language: | English |
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OXFORD UNIV PRESS
2018
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Online Access: | http://ir.ynao.ac.cn/handle/114a53/18398 https://doi.org/10.1093/mnras/sty2082 |
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ftchinacadscynao:oai:ir.ynao.ac.cn:114a53/18398 2023-05-15T18:23:15+02:00 Far-infrared Herschel SPIRE spectroscopy of lensed starbursts reveals physical conditions of ionized gas Zhang, Zhi-Yu Ivison, R. J. George, R. D. Zhao, Yinghe Dunne, L. Herrera-Camus, R. Lewis, A. J. R. Liu, Daizhong Naylor, D. Oteo, Ivan Riechers, D. A. Smail, Ian Yang, Chentao Eales, Stephen Hopwood, Ros Maddox, Steve Omont, Alain van der Werf, Paul 2018-11-01 http://ir.ynao.ac.cn/handle/114a53/18398 https://doi.org/10.1093/mnras/sty2082 英语 eng OXFORD UNIV PRESS MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY http://ir.ynao.ac.cn/handle/114a53/18398 doi:10.1093/mnras/sty2082 galaxies: active galaxies: high-redshift galaxies: starburst infrared: galaxies submillimetre: galaxies Astronomy & Astrophysics FOURIER-TRANSFORM SPECTROMETER H-II REGIONS ACTIVE GALACTIC NUCLEI HUBBLE-SPACE-TELESCOPE STAR-FORMATION HISTORY SOUTH-POLE TELESCOPE NARROW-LINE REGIONS EARLY-TYPE GALAXIES DEEP-FIELD-SOUTH SUBMILLIMETER GALAXIES 期刊论文 2018 ftchinacadscynao https://doi.org/10.1093/mnras/sty2082 2022-09-16T15:41:28Z The most intensively star-forming galaxies are extremely luminous at far-infrared ( FIR) wavelengths, highly obscured at optical and ultraviolet wavelengths, and lie at z >= 1-3. We present a programme of FIR spectroscopic observations with the SPIRE FTS, as well as photometric observations with PACS, both on board Herschel, towards a sample of 45 gravitationally lensed, dusty starbursts across z similar to 1-3.6. In total, we detected 27 individual lines down to 3 sigma, including nine [C II] 158 mu m lines with confirmed spectroscopic redshifts, five possible [C II] lines consistent with their FIR photometric redshifts, and in some individual sources a few [OIII] 88 mu m, [O III] 52 mu m, [O I] 145 mu m, [O I] 63 mu m, [N II] 122 mu m and OH 119 mu m ( in absorption) lines. To derive the typical physical properties of the gas in the sample, we stack all spectra weighted by their intrinsic luminosity and by their 500 mu m flux densities, with the spectra scaled to a common redshift. In the stacked spectra, we detect emission lines of [CII] 158 mu m, [N II] 122 mu m, [O III] 88 mu m, [O III] 52 mu m, [O I] 63 mu m and the absorption doublet of OH at 119 mu m, at high fidelity. We find that the average electron densities traced by the [NII] and [O III] lines are higher than the average values in local star-forming galaxies and ULIRGs, using the same tracers. From the [NII]/[C II] and [O I]/[C II] ratios, we find that the [CII] emission is likely dominated by the photodominated regions (PDR), instead of by ionized gas or large-scale shocks. Report South pole Yunnan Observatories: YNAO OpenIR (Chinese Academy of Sciences, CAS) Hubble ENVELOPE(158.317,158.317,-80.867,-80.867) South Pole Monthly Notices of the Royal Astronomical Society 481 1 59 97 |
institution |
Open Polar |
collection |
Yunnan Observatories: YNAO OpenIR (Chinese Academy of Sciences, CAS) |
op_collection_id |
ftchinacadscynao |
language |
English |
topic |
galaxies: active galaxies: high-redshift galaxies: starburst infrared: galaxies submillimetre: galaxies Astronomy & Astrophysics FOURIER-TRANSFORM SPECTROMETER H-II REGIONS ACTIVE GALACTIC NUCLEI HUBBLE-SPACE-TELESCOPE STAR-FORMATION HISTORY SOUTH-POLE TELESCOPE NARROW-LINE REGIONS EARLY-TYPE GALAXIES DEEP-FIELD-SOUTH SUBMILLIMETER GALAXIES |
spellingShingle |
galaxies: active galaxies: high-redshift galaxies: starburst infrared: galaxies submillimetre: galaxies Astronomy & Astrophysics FOURIER-TRANSFORM SPECTROMETER H-II REGIONS ACTIVE GALACTIC NUCLEI HUBBLE-SPACE-TELESCOPE STAR-FORMATION HISTORY SOUTH-POLE TELESCOPE NARROW-LINE REGIONS EARLY-TYPE GALAXIES DEEP-FIELD-SOUTH SUBMILLIMETER GALAXIES Zhang, Zhi-Yu Ivison, R. J. George, R. D. Zhao, Yinghe Dunne, L. Herrera-Camus, R. Lewis, A. J. R. Liu, Daizhong Naylor, D. Oteo, Ivan Riechers, D. A. Smail, Ian Yang, Chentao Eales, Stephen Hopwood, Ros Maddox, Steve Omont, Alain van der Werf, Paul Far-infrared Herschel SPIRE spectroscopy of lensed starbursts reveals physical conditions of ionized gas |
topic_facet |
galaxies: active galaxies: high-redshift galaxies: starburst infrared: galaxies submillimetre: galaxies Astronomy & Astrophysics FOURIER-TRANSFORM SPECTROMETER H-II REGIONS ACTIVE GALACTIC NUCLEI HUBBLE-SPACE-TELESCOPE STAR-FORMATION HISTORY SOUTH-POLE TELESCOPE NARROW-LINE REGIONS EARLY-TYPE GALAXIES DEEP-FIELD-SOUTH SUBMILLIMETER GALAXIES |
description |
The most intensively star-forming galaxies are extremely luminous at far-infrared ( FIR) wavelengths, highly obscured at optical and ultraviolet wavelengths, and lie at z >= 1-3. We present a programme of FIR spectroscopic observations with the SPIRE FTS, as well as photometric observations with PACS, both on board Herschel, towards a sample of 45 gravitationally lensed, dusty starbursts across z similar to 1-3.6. In total, we detected 27 individual lines down to 3 sigma, including nine [C II] 158 mu m lines with confirmed spectroscopic redshifts, five possible [C II] lines consistent with their FIR photometric redshifts, and in some individual sources a few [OIII] 88 mu m, [O III] 52 mu m, [O I] 145 mu m, [O I] 63 mu m, [N II] 122 mu m and OH 119 mu m ( in absorption) lines. To derive the typical physical properties of the gas in the sample, we stack all spectra weighted by their intrinsic luminosity and by their 500 mu m flux densities, with the spectra scaled to a common redshift. In the stacked spectra, we detect emission lines of [CII] 158 mu m, [N II] 122 mu m, [O III] 88 mu m, [O III] 52 mu m, [O I] 63 mu m and the absorption doublet of OH at 119 mu m, at high fidelity. We find that the average electron densities traced by the [NII] and [O III] lines are higher than the average values in local star-forming galaxies and ULIRGs, using the same tracers. From the [NII]/[C II] and [O I]/[C II] ratios, we find that the [CII] emission is likely dominated by the photodominated regions (PDR), instead of by ionized gas or large-scale shocks. |
format |
Report |
author |
Zhang, Zhi-Yu Ivison, R. J. George, R. D. Zhao, Yinghe Dunne, L. Herrera-Camus, R. Lewis, A. J. R. Liu, Daizhong Naylor, D. Oteo, Ivan Riechers, D. A. Smail, Ian Yang, Chentao Eales, Stephen Hopwood, Ros Maddox, Steve Omont, Alain van der Werf, Paul |
author_facet |
Zhang, Zhi-Yu Ivison, R. J. George, R. D. Zhao, Yinghe Dunne, L. Herrera-Camus, R. Lewis, A. J. R. Liu, Daizhong Naylor, D. Oteo, Ivan Riechers, D. A. Smail, Ian Yang, Chentao Eales, Stephen Hopwood, Ros Maddox, Steve Omont, Alain van der Werf, Paul |
author_sort |
Zhang, Zhi-Yu |
title |
Far-infrared Herschel SPIRE spectroscopy of lensed starbursts reveals physical conditions of ionized gas |
title_short |
Far-infrared Herschel SPIRE spectroscopy of lensed starbursts reveals physical conditions of ionized gas |
title_full |
Far-infrared Herschel SPIRE spectroscopy of lensed starbursts reveals physical conditions of ionized gas |
title_fullStr |
Far-infrared Herschel SPIRE spectroscopy of lensed starbursts reveals physical conditions of ionized gas |
title_full_unstemmed |
Far-infrared Herschel SPIRE spectroscopy of lensed starbursts reveals physical conditions of ionized gas |
title_sort |
far-infrared herschel spire spectroscopy of lensed starbursts reveals physical conditions of ionized gas |
publisher |
OXFORD UNIV PRESS |
publishDate |
2018 |
url |
http://ir.ynao.ac.cn/handle/114a53/18398 https://doi.org/10.1093/mnras/sty2082 |
long_lat |
ENVELOPE(158.317,158.317,-80.867,-80.867) |
geographic |
Hubble South Pole |
geographic_facet |
Hubble South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY http://ir.ynao.ac.cn/handle/114a53/18398 doi:10.1093/mnras/sty2082 |
op_doi |
https://doi.org/10.1093/mnras/sty2082 |
container_title |
Monthly Notices of the Royal Astronomical Society |
container_volume |
481 |
container_issue |
1 |
container_start_page |
59 |
op_container_end_page |
97 |
_version_ |
1766202797373521920 |