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• W2909304058 endingPage "A68" @default.
• W2909304058 startingPage "A68" @default.
• W2909304058 abstract "Context. The diffuse and translucent molecular clouds traced in absorption along the line of sight to strong background sources have so far been investigated mainly in the spectral domain because of limited angular resolution or small sizes of the background sources. Aims. We aim to resolve and investigate the spatial structure of molecular clouds traced by several molecules detected in absorption along the line of sight to Sgr B2(N). Methods. We have used spectral line data from the EMoCA survey performed with the Atacama Large Millimeter/submillimeter Array (ALMA), taking advantage of its high sensitivity and angular resolution. The velocity structure across the field of view is investigated by automatically fitting synthetic spectra to the detected absorption features, which allows us to decompose them into individual clouds located in the Galactic centre (GC) region and in spiral arms along the line of sight. We compute opacity maps for all detected molecules. We investigated the spatial and kinematical structure of the individual clouds with statistical methods and perform a principal component analysis to search for correlations between the detected molecules. To investigate the nature of the molecular clouds along the line of sight to Sgr B2, we also used archival Mopra data. Results. We identify, on the basis of c-C 3 H 2 , 15 main velocity components along the line of sight to Sgr B2(N) and several components associated with the envelope of Sgr B2 itself. The c-C 3 H 2 column densities reveal two categories of clouds. Clouds in Category I (3 kpc arm, 4 kpc arm, and some GC clouds) have smaller c-C 3 H 2 column densities, smaller linewidths, and smaller widths of their column density PDFs than clouds in Category II (Scutum arm, Sgr arm, and other GC clouds). We derive opacity maps for the following molecules: c-C 3 H 2 , H 13 CO + , 13 CO, HNC and its isotopologue HN 13 C, HC 15 N, CS and its isotopologues C 34 S and 13 CS, SiO, SO, and CH 3 OH. These maps reveal that most molecules trace relatively homogeneous structures that are more extended than the field of view defined by the background continuum emission (about 15′′, that is 0.08–0.6 pc depending on the distance). SO and SiO show more complex structures with smaller clumps of size ~5–8′′. Our analysis suggests that the driving of the turbulence is mainly solenoidal in the investigated clouds. Conclusions. On the basis of HCO + , we conclude that most line-of-sight clouds towards Sgr B2 are translucent, including all clouds where complex organic molecules were recently detected. We also conclude that CCH and CH are good probes of H 2 in both diffuse and translucent clouds, while HCO + and c-C 3 H 2 in translucent clouds depart from the correlations with H 2 found in diffuse clouds." @default.
• W2909304058 created "2019-01-25" @default.
• W2909304058 creator A5001522493 @default.
• W2909304058 creator A5005870132 @default.
• W2909304058 creator A5014514268 @default.
• W2909304058 creator A5025259904 @default.
• W2909304058 creator A5040004458 @default.
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• W2909304058 creator A5076572736 @default.
• W2909304058 creator A5083465619 @default.
• W2909304058 creator A5084321279 @default.
• W2909304058 creator A5090822634 @default.
• W2909304058 date "2019-03-01" @default.
• W2909304058 modified "2023-10-18" @default.
• W2909304058 title "Small-scale physical and chemical structure of diffuse and translucent molecular clouds along the line of sight to Sgr B2" @default.
• W2909304058 cites W1524084597 @default.
• W2909304058 cites W1672707394 @default.
• W2909304058 cites W1901128825 @default.
• W2909304058 cites W1924246703 @default.
• W2909304058 cites W1976009210 @default.
• W2909304058 cites W1977598213 @default.
• W2909304058 cites W1978412322 @default.
• W2909304058 cites W1978722614 @default.
• W2909304058 cites W1982453941 @default.
• W2909304058 cites W1984423179 @default.
• W2909304058 cites W1995450205 @default.
• W2909304058 cites W1997085273 @default.
• W2909304058 cites W1999538730 @default.
• W2909304058 cites W2005365967 @default.
• W2909304058 cites W2006757602 @default.
• W2909304058 cites W2007357189 @default.
• W2909304058 cites W2008526551 @default.
• W2909304058 cites W2010268922 @default.
• W2909304058 cites W2016955049 @default.
• W2909304058 cites W2018003132 @default.
• W2909304058 cites W2026096786 @default.
• W2909304058 cites W2027084092 @default.
• W2909304058 cites W2032298488 @default.
• W2909304058 cites W2032325755 @default.
• W2909304058 cites W2045150967 @default.
• W2909304058 cites W2047012904 @default.
• W2909304058 cites W2048453744 @default.
• W2909304058 cites W2053312575 @default.
• W2909304058 cites W2054233789 @default.
• W2909304058 cites W2062403813 @default.
• W2909304058 cites W2063525937 @default.
• W2909304058 cites W2065434793 @default.
• W2909304058 cites W2080312311 @default.
• W2909304058 cites W2086909247 @default.
• W2909304058 cites W2090364787 @default.
• W2909304058 cites W2093568015 @default.
• W2909304058 cites W2101256692 @default.
• W2909304058 cites W2109335112 @default.
• W2909304058 cites W2114013702 @default.
• W2909304058 cites W2117235337 @default.
• W2909304058 cites W2117536939 @default.
• W2909304058 cites W2121018712 @default.
• W2909304058 cites W2128294460 @default.
• W2909304058 cites W2137793512 @default.
• W2909304058 cites W2138769428 @default.
• W2909304058 cites W2141099472 @default.
• W2909304058 cites W2141128460 @default.
• W2909304058 cites W2141449095 @default.
• W2909304058 cites W2149613441 @default.
• W2909304058 cites W2149755077 @default.
• W2909304058 cites W2153740973 @default.
• W2909304058 cites W2157341649 @default.
• W2909304058 cites W2157482862 @default.
• W2909304058 cites W2162328595 @default.
• W2909304058 cites W2163780962 @default.
• W2909304058 cites W2165942636 @default.
• W2909304058 cites W2166023823 @default.
• W2909304058 cites W2171942739 @default.
• W2909304058 cites W2172241324 @default.
• W2909304058 cites W2260061100 @default.
• W2909304058 cites W2293117269 @default.
• W2909304058 cites W2332654945 @default.
• W2909304058 cites W2530043748 @default.
• W2909304058 cites W2606345048 @default.
• W2909304058 cites W2606886912 @default.
• W2909304058 cites W2750198779 @default.
• W2909304058 cites W2898962353 @default.
• W2909304058 cites W2952295550 @default.
• W2909304058 cites W2964257340 @default.
• W2909304058 cites W3000746797 @default.
• W2909304058 cites W3098279955 @default.
• W2909304058 cites W3099545260 @default.
• W2909304058 cites W3099747060 @default.
• W2909304058 cites W3100599794 @default.
• W2909304058 cites W3100625341 @default.
• W2909304058 cites W3101482354 @default.
• W2909304058 cites W3101693367 @default.
• W2909304058 cites W3101965161 @default.
• W2909304058 cites W3102087921 @default.
• W2909304058 cites W3102312889 @default.
• W2909304058 cites W3102584863 @default.
• W2909304058 cites W3103032267 @default.
• W2909304058 cites W3103413025 @default.

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