FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3104125824> ?p ?o ?g. }

• W3104125824 endingPage "154" @default.
• W3104125824 startingPage "154" @default.
• W3104125824 abstract "We study Giant Molecular Cloud (GMC) environments surrounding 10 Infrared Dark Clouds (IRDCs), using $^{13}$CO(1-0) emission from the Galactic Ring Survey. We measure physical properties of these IRDCs/GMCs on a range of scales extending to radii, R, of 30 pc. By comparing different methods for defining cloud boundaries and for deriving mass surface densities and velocity dispersions, we settle on a preferred CE,$tau$,G method of Connected Extraction in position-velocity space plus Gaussian fitting to opacity-corrected line profiles for velocity dispersion and mass estimation. We examine how cloud definition affects measurements of the magnitude and direction of line-of-sight velocity gradients and velocity dispersions, including associated dependencies on size scale. CE,$tau$,G-defined GMCs show velocity dispersion versus size relations $sigmapropto{s}^{1/2}$, which are consistent with the large-scale gradients being caused by turbulence. However, IRDCs have velocity dispersions that are moderately enhanced above those predicted by this scaling relation. We examine the dynamical state of the clouds finding mean virial parameters $bar{alpha}_{rm{vir}}simeq 1.0$ for GMCs and 1.6 for IRDCs, broadly consistent with models of magnetized virialized pressure-confined polytropic clouds, but potentially indicating that IRDCs have more disturbed kinematics. CE,$tau$,G-defined clouds exhibit a tight correlation of $sigma/R^{1/2}proptoSigma^n$, with $nsimeq0.7$ for GMCs and 1.3 for IRDCs (c.f., a value of 0.5 expected for a population of virialized clouds). We conclude that while GMCs show evidence for virialization over a range of scales, IRDCs may be moderately super virial. Alternatively, IRDCs could be virialized but have systematically different $^{13}$CO gas phase abundances, i.e., due to freeze-out, affecting mass estimations." @default.
• W3104125824 created "2020-11-23" @default.
• W3104125824 creator A5035124065 @default.
• W3104125824 creator A5085261673 @default.
• W3104125824 date "2015-08-20" @default.
• W3104125824 modified "2023-10-16" @default.
• W3104125824 title "THE GIANT MOLECULAR CLOUD ENVIRONMENTS OF INFRARED DARK CLOUDS" @default.
• W3104125824 cites W1528320834 @default.
• W3104125824 cites W1917623761 @default.
• W3104125824 cites W1967037459 @default.
• W3104125824 cites W1968137411 @default.
• W3104125824 cites W1972441746 @default.
• W3104125824 cites W1975947919 @default.
• W3104125824 cites W1980171700 @default.
• W3104125824 cites W1982241805 @default.
• W3104125824 cites W1988977509 @default.
• W3104125824 cites W1989548308 @default.
• W3104125824 cites W1991477504 @default.
• W3104125824 cites W1994064878 @default.
• W3104125824 cites W1996886816 @default.
• W3104125824 cites W1997266991 @default.
• W3104125824 cites W2000541536 @default.
• W3104125824 cites W2000672249 @default.
• W3104125824 cites W2022845636 @default.
• W3104125824 cites W2030771040 @default.
• W3104125824 cites W2032986063 @default.
• W3104125824 cites W2040928219 @default.
• W3104125824 cites W2042004467 @default.
• W3104125824 cites W2042169845 @default.
• W3104125824 cites W2043926793 @default.
• W3104125824 cites W2048447791 @default.
• W3104125824 cites W2059821387 @default.
• W3104125824 cites W2059969046 @default.
• W3104125824 cites W2067948727 @default.
• W3104125824 cites W2071571611 @default.
• W3104125824 cites W2071799194 @default.
• W3104125824 cites W2074529843 @default.
• W3104125824 cites W2074970616 @default.
• W3104125824 cites W2076200232 @default.
• W3104125824 cites W2082567699 @default.
• W3104125824 cites W2083075049 @default.
• W3104125824 cites W2085439800 @default.
• W3104125824 cites W2086284269 @default.
• W3104125824 cites W2088763329 @default.
• W3104125824 cites W2089176910 @default.
• W3104125824 cites W2089772640 @default.
• W3104125824 cites W2090542763 @default.
• W3104125824 cites W2109335112 @default.
• W3104125824 cites W2113209394 @default.
• W3104125824 cites W2140347367 @default.
• W3104125824 cites W2140863247 @default.
• W3104125824 cites W2141776806 @default.
• W3104125824 cites W2146494569 @default.
• W3104125824 cites W2148856608 @default.
• W3104125824 cites W2161424626 @default.
• W3104125824 cites W2601507719 @default.
• W3104125824 cites W2952163558 @default.
• W3104125824 cites W3018547985 @default.
• W3104125824 cites W3098572930 @default.
• W3104125824 cites W3099123091 @default.
• W3104125824 cites W3099273144 @default.
• W3104125824 cites W3099594512 @default.
• W3104125824 cites W3099830973 @default.
• W3104125824 cites W3100033358 @default.
• W3104125824 cites W3100148325 @default.
• W3104125824 cites W3100167798 @default.
• W3104125824 cites W3100311983 @default.
• W3104125824 cites W3100366342 @default.
• W3104125824 cites W3101096790 @default.
• W3104125824 cites W3101201750 @default.
• W3104125824 cites W3101367500 @default.
• W3104125824 cites W3101536651 @default.
• W3104125824 cites W3101604632 @default.
• W3104125824 cites W3102087921 @default.
• W3104125824 cites W3102298645 @default.
• W3104125824 cites W3102307870 @default.
• W3104125824 cites W3102598696 @default.
• W3104125824 cites W3102665190 @default.
• W3104125824 cites W3103708103 @default.
• W3104125824 cites W3103936180 @default.
• W3104125824 cites W3104556830 @default.
• W3104125824 cites W3104621534 @default.
• W3104125824 cites W3105094438 @default.
• W3104125824 cites W3105930256 @default.
• W3104125824 cites W3106108267 @default.
• W3104125824 cites W3124050744 @default.
• W3104125824 cites W3125588606 @default.
• W3104125824 cites W4292691060 @default.
• W3104125824 cites W4293107329 @default.
• W3104125824 cites W4300460990 @default.
• W3104125824 doi "https://doi.org/10.1088/0004-637x/809/2/154" @default.
• W3104125824 hasPublicationYear "2015" @default.
• W3104125824 type Work @default.
• W3104125824 sameAs 3104125824 @default.
• W3104125824 citedByCount "29" @default.
• W3104125824 countsByYear W31041258242015 @default.
• W3104125824 countsByYear W31041258242016 @default.
• W3104125824 countsByYear W31041258242017 @default.

• next