FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2891702260> ?p ?o ?g. }

• W2891702260 endingPage "A62" @default.
• W2891702260 startingPage "A62" @default.
• W2891702260 abstract "The Serpens filament, as one of the nearest infrared dark clouds, is regarded as a pristine filament at a very early evolutionary stage of star formation. In order to study its molecular content and dynamical state, we mapped this filament in seven species: C 18 O, HCO + , HNC, HCN, N 2 H + , CS, and CH 3 OH. Among them, HCO + , HNC, HCN, and CS show self-absorption, while C 18 O is most sensitive to the filamentary structure. A kinematic analysis demonstrates that this filament forms a velocity-coherent (trans)sonic structure, a large part of which is one of the most quiescent regions in the Serpens cloud. Widespread C 18 O depletion is found throughout the Serpens filament. Based on the Herschel dust-derived H 2 column density map, the line mass of the filament is 36–41 M ⊙ pc −1 , and its full width at half maximum is 0.17 ± 0.01 pc, while its length is ≈1.6 pc. The inner radial column density profile of this filament can be well fitted with a Plummer profile with an exponent of 2.2 ± 0.1, a scale radius of 0.018 ± 0.003 pc, and a central density of (4.0 ± 0.8) × 10 4 cm −3 . The Serpens filament appears to be slightly supercritical. The widespread blue-skewed HNC and CS line profiles and HCN hyperfine line anomalies across this filament indicate radial infall in parts of the Serpens filament. C 18 O velocity gradients also indicate accretion flows along the filament. The velocity and density structures suggest that such accretion flows are likely due to a longitudinal collapse parallel to the filament’s long axis. Both the radial infall rate (~72 M ⊙ Myr −1 , inferred from HNC and CS blue-skewed profiles) and the longitudinal accretion rate (~10 M ⊙ Myr −1 , inferred from C 18 O velocity gradients) along the Serpens filament are lower than all previously reported values in other filaments. This indicates that the Serpens filament lies at an early evolutionary stage when collapse has just begun, or that thermal and nonthermal support are effective in providing support against gravity." @default.
• W2891702260 created "2018-09-27" @default.
• W2891702260 creator A5039249550 @default.
• W2891702260 creator A5044050817 @default.
• W2891702260 creator A5060310147 @default.
• W2891702260 creator A5062668421 @default.
• W2891702260 creator A5072165030 @default.
• W2891702260 creator A5077156611 @default.
• W2891702260 creator A5083465619 @default.
• W2891702260 creator A5085362338 @default.
• W2891702260 date "2018-11-28" @default.
• W2891702260 modified "2023-09-23" @default.
• W2891702260 title "The Serpens filament at the onset of slightly supercritical collapse" @default.
• W2891702260 cites W1825682289 @default.
• W2891702260 cites W1963991864 @default.
• W2891702260 cites W1974309470 @default.
• W2891702260 cites W1977111510 @default.
• W2891702260 cites W2000585702 @default.
• W2891702260 cites W2002249160 @default.
• W2891702260 cites W2008579027 @default.
• W2891702260 cites W2009452458 @default.
• W2891702260 cites W2016365787 @default.
• W2891702260 cites W2017002018 @default.
• W2891702260 cites W2019579421 @default.
• W2891702260 cites W2024869774 @default.
• W2891702260 cites W2030392387 @default.
• W2891702260 cites W2041730224 @default.
• W2891702260 cites W2045096837 @default.
• W2891702260 cites W2045998807 @default.
• W2891702260 cites W2048617535 @default.
• W2891702260 cites W2049911789 @default.
• W2891702260 cites W2052937506 @default.
• W2891702260 cites W2054720561 @default.
• W2891702260 cites W2055217648 @default.
• W2891702260 cites W2055506692 @default.
• W2891702260 cites W2066018687 @default.
• W2891702260 cites W2078074639 @default.
• W2891702260 cites W2080022127 @default.
• W2891702260 cites W2081287082 @default.
• W2891702260 cites W2082567699 @default.
• W2891702260 cites W2091044401 @default.
• W2891702260 cites W2093342937 @default.
• W2891702260 cites W2098683317 @default.
• W2891702260 cites W2099070333 @default.
• W2891702260 cites W2101681357 @default.
• W2891702260 cites W2104215568 @default.
• W2891702260 cites W2119766797 @default.
• W2891702260 cites W2126700402 @default.
• W2891702260 cites W2131678940 @default.
• W2891702260 cites W2131955221 @default.
• W2891702260 cites W2135536375 @default.
• W2891702260 cites W2135625048 @default.
• W2891702260 cites W2140220905 @default.
• W2891702260 cites W2140370112 @default.
• W2891702260 cites W2150372924 @default.
• W2891702260 cites W2154298686 @default.
• W2891702260 cites W2270019013 @default.
• W2891702260 cites W2336117971 @default.
• W2891702260 cites W2759108572 @default.
• W2891702260 cites W2782575811 @default.
• W2891702260 cites W2807801960 @default.
• W2891702260 cites W2888169383 @default.
• W2891702260 cites W2951061718 @default.
• W2891702260 cites W2951969565 @default.
• W2891702260 cites W2964257340 @default.
• W2891702260 cites W2989596945 @default.
• W2891702260 cites W3098115525 @default.
• W2891702260 cites W3099263256 @default.
• W2891702260 cites W3099360630 @default.
• W2891702260 cites W3099541442 @default.
• W2891702260 cites W3099643197 @default.
• W2891702260 cites W3099896119 @default.
• W2891702260 cites W3100106758 @default.
• W2891702260 cites W3100148325 @default.
• W2891702260 cites W3100598821 @default.
• W2891702260 cites W3100599046 @default.
• W2891702260 cites W3100647972 @default.
• W2891702260 cites W3100970929 @default.
• W2891702260 cites W3101060846 @default.
• W2891702260 cites W3101271470 @default.
• W2891702260 cites W3101351265 @default.
• W2891702260 cites W3101441060 @default.
• W2891702260 cites W3101550428 @default.
• W2891702260 cites W3101972564 @default.
• W2891702260 cites W3102109020 @default.
• W2891702260 cites W3102289512 @default.
• W2891702260 cites W3102543149 @default.
• W2891702260 cites W3102762515 @default.
• W2891702260 cites W3104423841 @default.
• W2891702260 cites W3104764529 @default.
• W2891702260 cites W3105561096 @default.
• W2891702260 cites W3106075187 @default.
• W2891702260 cites W3106350750 @default.
• W2891702260 cites W3122719725 @default.
• W2891702260 cites W3125125259 @default.
• W2891702260 cites W4289815540 @default.
• W2891702260 cites W4293107596 @default.
• W2891702260 cites W4297631057 @default.

• next