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Tracing the evolutionary stage of Bok globules: CCS and NH3
C. Marka, K. Schreyer, R. Launhardt +2
We pursue the investigation of a previously proposed correlation between chemical properties and physical evolutionary stage of isolated low-mass star-forming regions. In the past,…
The substellar mass function in the central region of the open cluster Praesepe from deep LBT observations
Wei Wang, Steve Boudreault, Bertrand Goldman +3
Studies of the mass function (MF) of open clusters of different ages allow us to probe the efficiency with which brown dwarfs evaporate from clusters to populate the field. Surveys…
Sequential star formation in IRAS 06084-0611 (GGD 12-15): From intermediate-mass to high-mass stars
K. M. Maaskant, A. Bik, L. B. F. M. Waters +5
Context. The formation and early evolution of high- and intermediate-mass stars towards the main sequence involves the interplay of stars in a clustered and highly complex environm…
Application of recent results on the orbital migration of low mass planets: convergence zones
C. Mordasini, K. -M. Dittkrist, Y. Alibert +3
Previous models of the combined growth and migration of protoplanets needed large ad hoc reduction factors for the type I migration rate as found in the isothermal approximation. I…