ALMA IMAGING OF THE CO (6-5) LINE EMISSION IN NGC 7130

In this paper, we report our high-resolution (0.″20 × 0.″14 or ∼70 × 49 pc) observations of the CO(6-5) line emission, which probes warm and dense molecular gas, and the 434 μ m dust continuum in the nuclear region of NGC 7130, obtained with the Atacama Large Millimeter Array (ALMA). The CO line and...

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Veröffentlicht in:	The Astrophysical journal 2016-04, Vol.820 (2), p.118
Hauptverfasser:	Zhao (赵应和), Yinghe, Lu, Nanyao, Xu, C. Kevin, Gao (高煜), Yu, Barcos-Munõz, Loreto, Díaz-Santos, Tanio, Appleton, Philip, Charmandaris, Vassilis, Armus, Lee, van der Werf, Paul, Evans, Aaron, Cao, Chen, Inami, Hanae, Murphy, Eric
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Schlagworte:	ASTROPHYSICS, COSMOLOGY AND ASTRONOMY CARBON MONOXIDE CORRECTIONS CORRELATIONS COSMIC DUST DECOUPLING EMISSION SPECTRA GALAXIES GALAXY CLUSTERS GALAXY NUCLEI HEATING PROBES RESOLUTION STAR CLUSTERS STAR EVOLUTION STARS
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creator	Zhao (赵应和), Yinghe Lu, Nanyao Xu, C. Kevin Gao (高煜), Yu Barcos-Munõz, Loreto Díaz-Santos, Tanio Appleton, Philip Charmandaris, Vassilis Armus, Lee van der Werf, Paul Evans, Aaron Cao, Chen Inami, Hanae Murphy, Eric
description	In this paper, we report our high-resolution (0.″20 × 0.″14 or ∼70 × 49 pc) observations of the CO(6-5) line emission, which probes warm and dense molecular gas, and the 434 μ m dust continuum in the nuclear region of NGC 7130, obtained with the Atacama Large Millimeter Array (ALMA). The CO line and dust continuum fluxes detected in our ALMA observations are 1230 ± 74 Jy km s −1 and 814 ± 52 mJy, respectively, which account for 100% and 51% of their total fluxes. We find that the CO(6-5) and dust emissions are generally spatially correlated, but their brightest peaks show an offset of ∼70 pc, suggesting that the gas and dust emissions may start decoupling at this physical scale. The brightest peak of the CO(6-5) emission does not spatially correspond to the radio continuum peak, which is likely dominated by an active galactic nucleus (AGN). This, together with our additional quantitative analysis, suggests that the heating contribution of the AGN to the CO(6-5) emission in NGC 7130 is negligible. The CO(6-5) and the extinction-corrected Pa- α maps display striking differences, suggestive of either a breakdown of the correlation between warm dense gas and star formation at linear scales of
doi_str_mv	10.3847/0004-637X/820/2/118
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Kevin ; Gao (高煜), Yu ; Barcos-Munõz, Loreto ; Díaz-Santos, Tanio ; Appleton, Philip ; Charmandaris, Vassilis ; Armus, Lee ; van der Werf, Paul ; Evans, Aaron ; Cao, Chen ; Inami, Hanae ; Murphy, Eric</creator><creatorcontrib>Zhao (赵应和), Yinghe ; Lu, Nanyao ; Xu, C. Kevin ; Gao (高煜), Yu ; Barcos-Munõz, Loreto ; Díaz-Santos, Tanio ; Appleton, Philip ; Charmandaris, Vassilis ; Armus, Lee ; van der Werf, Paul ; Evans, Aaron ; Cao, Chen ; Inami, Hanae ; Murphy, Eric</creatorcontrib><description>In this paper, we report our high-resolution (0.″20 × 0.″14 or ∼70 × 49 pc) observations of the CO(6-5) line emission, which probes warm and dense molecular gas, and the 434 μ m dust continuum in the nuclear region of NGC 7130, obtained with the Atacama Large Millimeter Array (ALMA). The CO line and dust continuum fluxes detected in our ALMA observations are 1230 ± 74 Jy km s −1 and 814 ± 52 mJy, respectively, which account for 100% and 51% of their total fluxes. We find that the CO(6-5) and dust emissions are generally spatially correlated, but their brightest peaks show an offset of ∼70 pc, suggesting that the gas and dust emissions may start decoupling at this physical scale. The brightest peak of the CO(6-5) emission does not spatially correspond to the radio continuum peak, which is likely dominated by an active galactic nucleus (AGN). This, together with our additional quantitative analysis, suggests that the heating contribution of the AGN to the CO(6-5) emission in NGC 7130 is negligible. The CO(6-5) and the extinction-corrected Pa- α maps display striking differences, suggestive of either a breakdown of the correlation between warm dense gas and star formation at linear scales of <100 pc or a large uncertainty in our extinction correction to the observed Pa- α image. 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The CO(6-5) and the extinction-corrected Pa- α maps display striking differences, suggestive of either a breakdown of the correlation between warm dense gas and star formation at linear scales of <100 pc or a large uncertainty in our extinction correction to the observed Pa- α image. 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The CO(6-5) and the extinction-corrected Pa- α maps display striking differences, suggestive of either a breakdown of the correlation between warm dense gas and star formation at linear scales of <100 pc or a large uncertainty in our extinction correction to the observed Pa- α image. 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subjects	ASTROPHYSICS, COSMOLOGY AND ASTRONOMY CARBON MONOXIDE CORRECTIONS CORRELATIONS COSMIC DUST DECOUPLING EMISSION SPECTRA GALAXIES GALAXY CLUSTERS GALAXY NUCLEI HEATING PROBES RESOLUTION STAR CLUSTERS STAR EVOLUTION STARS
title	ALMA IMAGING OF THE CO (6-5) LINE EMISSION IN NGC 7130
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