Detection of pedestal features in dark clouds - Evidence for formation of low mass stars

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Molecular Clouds, Planetary Nebulae, Protostars, Stellar Evolution, Stellar Mass Ejection, Astronomical Maps, Carbon Monoxide, Molecular Spectra, Star Formation Rate, Stellar Winds

Scientific paper

To assess whether B335 is unique among dark clouds or whether CO-12 pedestal features are quite common, 180 opacity class 5 and 6 Lynds clouds were surveyed. From this set of data, three additional sources were found to have pedestal features. These suggest the presence of embedded low-mass stars, though a hot differentially rotating disk cannot be excluded for B335. Estimates of the mass-loss rate required to produce stellar winds consistent with observations are comparable with mass-loss rates for T Tauri stars. Further, the pedestal feature formation rate is similar to the local low-mass star formation rate.

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