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• W308159013 abstract "In this chapter, we search for evidence of a relation between properties of young stellar objects (YSOs) and their parent molecular clouds to understand the initial conditions of high-mass star formation. A sample of 135 sources was selected from the Infrared Astronomical Satellite (IRAS) Point Source Catalog, on the basis of their red color to enhance the possibility of discovering young sources. Using the Kolner Observatorium fur SubMillimeter Astronomie (KOSMA) 3-m telescope, a single-point survey in (^{13})CO J (=2-1) was carried out for the entire sample, and 14 sources were mapped further. Archival mid-infrared (MIR) data were compared with the (^{13})CO emissions to identify evolutionary stages of the sources. A (^{13})CO observed sample was assembled to investigate the correlation between (^{13})CO line width of the clouds and the luminosity of the associated YSOs. We identified 98 sources suitable for star formation analyses for which relevant parameters were calculated. We detected 18 cores from 14 mapped sources, which were identified with eight pre-UC H ii regions and one UC H ii region, two high-mass cores earlier than pre-UC H ii phase, four possible star forming clusters, and three sourceless cores. By compiling a large (360 sources) (^{13})CO observed sample, a good correlation was found between the (^{13})CO line width of the clouds and the bolometric luminosity of the associated YSOs, which can be fitted as a power law, (lg ,(varDelta V_{13}/,mathrm {kms}^{-1}) = (-0.023 pm 0.044)+(0.135pm 0.012)lg ,(L_mathrm{bol}/L_{odot })). Results show that luminous ((>) (10^3,L_{odot })) YSOs tend to be associated with both more massive and more turbulent ((varDelta V_{13}>2,mathrm {kms}^{-1})) molecular cloud structures." @default.
• W308159013 created "2016-06-24" @default.
• W308159013 creator A5026906414 @default.
• W308159013 date "2014-11-04" @default.
• W308159013 modified "2023-09-27" @default.
• W308159013 title "An Infrared Point Source Survey" @default.
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• W308159013 doi "https://doi.org/10.1007/978-3-662-44969-1_2" @default.
• W308159013 hasPublicationYear "2014" @default.
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