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- W2083995412 abstract "A comparison of the line widths of C17O and CS toward a sample of high-mass protostar objects is used to separate the sample into two groups. The larger line width objects (Δv > 3 km s-1; MC1 sources) are shown to have the lowest C17O abundances. They also show evidence of heating by the central young star and have steep density profiles and high mass-to-luminosity (M/L) ratios. The remaining sources show less evidence of heating and have shallower density profiles and smaller M/L ratios. These objects are subdivided into sources with low C17O abundances (MC2 sources) and sources with approximately normal C17O abundances (MC3 sources). The connection between properties related to the core (C17O abundance, density profile) and stellar heating suggests an intimate connection between the cores and the objects forming within them. We propose that this reflects a coupled evolution of the core and the central sources. It is proposed that the identified groups represent an evolutionary sequence in the properties of these massive cores." @default.
- W2083995412 created "2016-06-24" @default.
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- W2083995412 date "2007-03-26" @default.
- W2083995412 modified "2023-09-27" @default.
- W2083995412 title "The Evolution of Massive Dense Cores" @default.
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- W2083995412 doi "https://doi.org/10.1086/518029" @default.
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