Matches in SemOpenAlex for { <https://semopenalex.org/work/W4311806893> ?p ?o ?g. }
- W4311806893 endingPage "299" @default.
- W4311806893 startingPage "285" @default.
- W4311806893 abstract "ABSTRACT Filamentary structures have been found nearly ubiquitously in molecular clouds and yet their formation and evolution is still poorly understood. We examine a segment of Taurus Molecular Cloud 1 (TMC-1) that appears as a single, narrow filament in continuum emission from dust. We use the Regularized Optimization for Hyper-Spectral Analysis (ROHSA), a Gaussian decomposition algorithm that enforces spatial coherence when fitting multiple velocity components simultaneously over a data cube. We analyse HC5N (9–8) line emission as part of the Green Bank Ammonia Survey and identify three velocity-coherent components with ROHSA. The two brightest components extend the length of the filament, while the third component is fainter and clumpier. The brightest component has a prominent transverse velocity gradient of 2.7 ± 0.1 km s−1 pc−1 that we show to be indicative of gravitationally induced inflow. In the second component, we identify regularly spaced emission peaks along its length. We show that the local minima between pairs of adjacent HC5N peaks line up closely with submillimetre continuum emission peaks, which we argue is evidence for fragmentation along the spine of TMC-1. While coherent velocity components have been described as separate physical structures in other star-forming filaments, we argue that the two bright components identified in HC5N emission in TMC-1 are tracing two layers in one filament: a lower density outer layer whose material is flowing under gravity towards the higher density inner layer of the filament." @default.
- W4311806893 created "2022-12-28" @default.
- W4311806893 creator A5011841122 @default.
- W4311806893 creator A5020215337 @default.
- W4311806893 creator A5026959964 @default.
- W4311806893 creator A5027655092 @default.
- W4311806893 creator A5038749437 @default.
- W4311806893 creator A5039093835 @default.
- W4311806893 creator A5045259127 @default.
- W4311806893 creator A5058780474 @default.
- W4311806893 creator A5063062592 @default.
- W4311806893 creator A5065791464 @default.
- W4311806893 creator A5082805955 @default.
- W4311806893 creator A5089099136 @default.
- W4311806893 creator A5090718980 @default.
- W4311806893 creator A5065924919 @default.
- W4311806893 date "2022-12-15" @default.
- W4311806893 modified "2023-10-14" @default.
- W4311806893 title "Velocity-coherent substructure in TMC-1: inflow and fragmentation" @default.
- W4311806893 cites W1853020234 @default.
- W4311806893 cites W1963991864 @default.
- W4311806893 cites W1979552099 @default.
- W4311806893 cites W1985756183 @default.
- W4311806893 cites W1988126119 @default.
- W4311806893 cites W1995016890 @default.
- W4311806893 cites W1999661480 @default.
- W4311806893 cites W2001579048 @default.
- W4311806893 cites W2004485661 @default.
- W4311806893 cites W2011301426 @default.
- W4311806893 cites W2015732298 @default.
- W4311806893 cites W2017489576 @default.
- W4311806893 cites W2020754096 @default.
- W4311806893 cites W2024173203 @default.
- W4311806893 cites W2030392387 @default.
- W4311806893 cites W2037766454 @default.
- W4311806893 cites W2040972474 @default.
- W4311806893 cites W2048617535 @default.
- W4311806893 cites W2056892540 @default.
- W4311806893 cites W2068310343 @default.
- W4311806893 cites W2069085998 @default.
- W4311806893 cites W2070221387 @default.
- W4311806893 cites W2074365138 @default.
- W4311806893 cites W2076014724 @default.
- W4311806893 cites W2076241453 @default.
- W4311806893 cites W2081287082 @default.
- W4311806893 cites W2109401568 @default.
- W4311806893 cites W2113209394 @default.
- W4311806893 cites W2121018712 @default.
- W4311806893 cites W2124322437 @default.
- W4311806893 cites W2135625048 @default.
- W4311806893 cites W2141156813 @default.
- W4311806893 cites W2154298686 @default.
- W4311806893 cites W2161750781 @default.
- W4311806893 cites W2163577262 @default.
- W4311806893 cites W2278868484 @default.
- W4311806893 cites W2285038091 @default.
- W4311806893 cites W2320493140 @default.
- W4311806893 cites W2320712892 @default.
- W4311806893 cites W2327571967 @default.
- W4311806893 cites W2553900338 @default.
- W4311806893 cites W2606889416 @default.
- W4311806893 cites W2743831842 @default.
- W4311806893 cites W2782575811 @default.
- W4311806893 cites W2782918619 @default.
- W4311806893 cites W2803436799 @default.
- W4311806893 cites W2810896585 @default.
- W4311806893 cites W2883839476 @default.
- W4311806893 cites W2888532099 @default.
- W4311806893 cites W2900748339 @default.
- W4311806893 cites W2903690108 @default.
- W4311806893 cites W2951969565 @default.
- W4311806893 cites W2964257340 @default.
- W4311806893 cites W2966293634 @default.
- W4311806893 cites W2971879579 @default.
- W4311806893 cites W3015453067 @default.
- W4311806893 cites W3083988477 @default.
- W4311806893 cites W3097989847 @default.
- W4311806893 cites W3098239546 @default.
- W4311806893 cites W3098247793 @default.
- W4311806893 cites W3098594137 @default.
- W4311806893 cites W3099270657 @default.
- W4311806893 cites W3099416505 @default.
- W4311806893 cites W3099643197 @default.
- W4311806893 cites W3099878876 @default.
- W4311806893 cites W3099885928 @default.
- W4311806893 cites W3100006726 @default.
- W4311806893 cites W3100215046 @default.
- W4311806893 cites W3100599046 @default.
- W4311806893 cites W3101060846 @default.
- W4311806893 cites W3101550428 @default.
- W4311806893 cites W3101972564 @default.
- W4311806893 cites W3102338900 @default.
- W4311806893 cites W3102507287 @default.
- W4311806893 cites W3102688627 @default.
- W4311806893 cites W3102826351 @default.
- W4311806893 cites W3103145119 @default.
- W4311806893 cites W3103513192 @default.
- W4311806893 cites W3103928789 @default.